• Renntech BMW N54 Flash Tuning, 100+ wheel horsepower

      Our proprietary BMW ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units. These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, through our proprietary tuning software and approach for BMW is completely unique and independent from our Mercedes tuning program.


      RENNtech tuning software for BMW offers significant gains in performance and throttle response without sacrificing your daily driver BMW's reliability.

      By modifying ignition timing and throttle mapping, optimizing air/ fuel ratios,increasing the top speed limiter, improving engine cooling and modifying boost mapping for turbocharged vehicles; RENNtech performance software unleashes your BMW's true potential.

      Stock Performance 335iS E92/E93 (2010-2011- Manual & DCT N54B30to 3.0LBiturbo):
      320 HP @ 5800RPM / 332 TQ @ 1400 RPM

      Modified Performance:
      420 HP @ 5700RPM / 435 TQ @ 4300 RPM

      Price: $1,495

      Stock Performance 335i/iX E90/E92/E93 (2007-2010 Manual & Steptronic N54B30) :
      • 300 HP @ 5800 RPM / 300 TQ @ 1400 RPM


      Gains:

      • 420 HP @ 5700 RPM / 435 TQ @ 4300 RPM


      Feel free to message or call me with any questions or to place an order and send us your ECU


      This article was originally published in forum thread: Renntech BMW N54 Flash Tuning, 100+ wheel horsepower started by Mike@Renntech View original post
      Comments 48 Comments
      1. benzy89's Avatar
        benzy89 -
        $1,500 might fly on the E9x M3 market (basically the cost of an ESS N/A Tune + Test Pipes), but for a Stage 1/FMIC Flash is way overpriced, especially for a platform that's used market price is $15-25k.
      1. Sticky's Avatar
        Sticky -
        Renntech knows how to price their parts to stay in business guys.
      1. Mike@Renntech's Avatar
        Mike@Renntech -
        Click here to enlarge Originally Posted by Remonster Click here to enlarge
        I'd love to hear how they managed to make so much power on a 335is with just software when Cobb's gains were barely noticeable on my 335is. Also, minor correction but you have the 335is listed as 2010-11 but they kept making them until 2013, mine is a 2013.
      1. RnmEvo9's Avatar
        RnmEvo9 -
        Click here to enlarge Originally Posted by Mike@Renntech Click here to enlarge
        The cobb systems are piggy back units and they do not have as much control as we do and other tuners do that go in to the ECU and tune.
        LOL, I think you should do some more research on your competitors products, just saying.
      1. MAC335's Avatar
        MAC335 -
        Click here to enlarge Originally Posted by Mike@Renntech Click here to enlarge
        The cobb systems are piggy back units
        Attachment 37536
      1. mjmarovi's Avatar
        mjmarovi -
        Ok...so power gains are similar to the JB4 or a Cobb with a protune. Maybe a little more power, but that's just being a little aggressive to get an extra ~20whp without doing other upgrades.
        @Mike@Renntech I'll be honest that price does seem extremely high considering the Cobb Flash is $900 and offers a handheld that can be used for other features including datalogging. What do you offer in terms of re-flashing/tuning for additional upgrades and doing custom tuning depending on the location the vehicle will be used in?

        See, basically what we are looking at is a the product of a very aggressive custom tune on one particular vehicle. So not only are those gains not going to be consistent using that same flash for other cars wherever they are, but it's not even safe or recommended.

        I'm sure you have all of this thought out, but I am simply expressing concerns others would have as well. We just need more info, any new product especially from a company with a great reputation is going to catch some attention. The price really adds to attention because we would want to know what the advantages are. From the information you've posted so far...there are only disadvantages seen. The way it feels now is if I were to send my ECU in to you (major pain to do in itself plus additional costs) and have you flash it with some tune you got off of a test car, and send it back to me. How is that any better than buying a Cobb and using an Off The Shelf aggressive tune? Except for with the Cobb you can datalog some street pulls, and make adjustments yourself, or go to a Cobb pro-tuner in your area. Or, Pro-Tuning Freaks e-tune.

        I'm sorry if it comes off as me being offensive, but I assure you I am doing nothing but trying to help and lay out all concerns and questions the majority of this platforms' users would have.

        Thank you and looking forward to your response,

        Matt
      1. rdeterman's Avatar
        rdeterman -
        Click here to enlarge Originally Posted by mjmarovi Click here to enlarge
        Ok...so power gains are similar to the JB4 or a Cobb with a protune. Maybe a little more power, but that's just being a little aggressive to get an extra ~20whp without doing other upgrades.
        @Mike@Renntech I'll be honest that price does seem extremely high considering the Cobb Flash is $900 and offers a handheld that can be used for other features including datalogging. What do you offer in terms of re-flashing/tuning for additional upgrades and doing custom tuning depending on the location the vehicle will be used in?

        See, basically what we are looking at is a the product of a very aggressive custom tune on one particular vehicle. So not only are those gains not going to be consistent using that same flash for other cars wherever they are, but it's not even safe or recommended.

        I'm sure you have all of this thought out, but I am simply expressing concerns others would have as well. We just need more info, any new product especially from a company with a great reputation is going to catch some attention. The price really adds to attention because we would want to know what the advantages are. From the information you've posted so far...there are only disadvantages seen. The way it feels now is if I were to send my ECU in to you (major pain to do in itself plus additional costs) and have you flash it with some tune you got off of a test car, and send it back to me. How is that any better than buying a Cobb and using an Off The Shelf aggressive tune? Except for with the Cobb you can datalog some street pulls, and make adjustments yourself, or go to a Cobb pro-tuner in your area. Or, Pro-Tuning Freaks e-tune.

        I'm sorry if it comes off as me being offensive, but I assure you I am doing nothing but trying to help and lay out all concerns and questions the majority of this platforms' users would have.

        Thank you and looking forward to your response,

        Matt

        Well said!
      1. brusk's Avatar
        brusk -
        I think the marketing audience is not on this forum. People that Buy Dinan, GIAC and Renntech typically wouldn't consider a BB Flash, Cobb or JB4. They just want to go into a facility and get their car coming out a few hours later with better performance. Most of these would probably come from other platforms that know that they had good luck with that tuner before. The Dyno sheet looks pretty close to a Cobb OTS Stage 1+ or 2+.
      1. litxus's Avatar
        litxus -
        Click here to enlarge Originally Posted by brusk Click here to enlarge
        I think the marketing audience is not on this forum. People that Buy Dinan, GIAC and Renntech typically wouldn't consider a BB Flash, Cobb or JB4. They just want to go into a facility and get their car coming out a few hours later with better performance. Most of these would probably come from other platforms that know that they had good luck with that tuner before. The Dyno sheet looks pretty close to a Cobb OTS Stage 1+ or 2+.
        Agreed, I don't think people that look at forums will actually buy DINAN, GIAC or now Renntech as first, there is a hassle of loading and unloading the tune, possible issues at dealership (maybe they will not be able to flash anything), and the price point is just not competitive when you consider JB4, BT cable and Cobb.
      1. lulz_m3's Avatar
        lulz_m3 -
        I seem to remember a very vocal renntech tune user who switched to cobb because he couldnt get any more power with renntech.... whom who could that have been.












        @BuraQ...
      1. Puerto Rican 335d's Avatar
        Puerto Rican 335d -
        Ok amigos Im coming to bat for RENNtech:

        2002 MCS last dynoed 2 yrs(@ 100k) before I sold it 3 yrs ago(5 yrs ago just in case) clicked at 197 whp w intake and 15% pulley(RENNtech Flash) was getting around 25 mpg city driving around 31 mpg/hwy.

        2011 335d (yes, DIESEL just in case you dont know) dynoed last month 318 whp and 425 lb/tq on the wheels (WAGNER IC increased 12 whp) RENNtech flash performed at Lake Park and car was dynoed in Puerto Rico the temp for that day was 90 degrees Fahrenheit

        Yes, its expensive but our car's are not Toyotas or whatever. You wanna play you have to pay!! But there is always alternatives, so if you can do it, do it, otherwise, if you cant. Then, dont $#@! and continue reading and enjoy this site.

        True Cobb, JB or others are cheaper but, RENNtech if Im not wrong gives you a warranty on your tune ONLY for 24 mo. My 02 MCS only had a reflash done cause MINI gave it an update flash and erased RENNtech's in 2005 and after that, it never went away!!.
      1. Puerto Rican 335d's Avatar
        Puerto Rican 335d -
        Buraq jumped ship jajajaja oh well $#@! happens jajajaja
      1. BuraQ's Avatar
        BuraQ -
        I was trying to stay out of this but is seems its going in the wrong direction, so here I go....(kinda knew I was going to get called out for this thread)

        Click here to enlarge Originally Posted by Mike@Renntech Click here to enlarge
        I spoke to my tuner and the car we tested was stock but we recommend doing an intercooler upgrade with our tune.
        That dyno was done some time in March 2012, if I am not mistaken, on my 335is. I am Dimitri, I dont recall which Mike this is so please excuse, unless your new to the RENNtech team. Tomas, Lenny and Mr Hartmut know me very well, and I am also a customer.

        I was completely all stock except for the intercooler I had the Dinan FMIC. It was a long time ago, so I wouldnt expect anyone to remember that far back expecially all the cars that Lenny tunes and dynos.

        For a FBO car I have seen the same tune on @bme30 07 E92 put down 388 whp 430 wtq. It was Ryan , Lenny and myself. These numbers were in the non adaptive state ie Ryan took out his PROcede to compare with the RENNTech flash while it was on the dyno. Three pulls were done only for those ending numbers. I am pretty sure Ryan's car after it had adapted to the RENNtech tuning would have gotten closer to 400 whp.

        Keep in mind this is tuned for 93 octane

        Click here to enlarge Originally Posted by Remonster Click here to enlarge
        I'd love to hear how they managed to make so much power on a 335is with just software when Cobb's gains were barely noticeable on my 335is. Also, minor correction but you have the 335is listed as 2010-11 but they kept making them until 2013, mine is a 2013.
        Cobb maps are ported from a non IS N54. The maps were not tune exclusively around a 335is.

        RENNtech's tune in the right DA can break 11s or get low 12s, it all depends on the driver ie additional weight and experience driving the DCT. Here is my consistance 11s on the RENNtech tune. Excuse the music I got a little retarded with it :





        Click here to enlarge Originally Posted by Mike@Renntech Click here to enlarge
        The cobb systems are piggy back units and they do not have as much control as we do and other tuners do that go in to the ECU and tune.....
        This is absolutely wrong. Please make sure to cross reference with Lenny if your not sure about something.

        Click here to enlarge Originally Posted by mjmarovi Click here to enlarge
        .... What do you offer in terms of re-flashing/tuning for additional upgrades and doing custom tuning depending on the location the vehicle will be used in?

        See, basically what we are looking at is a the product of a very aggressive custom tune on one particular vehicle. So not only are those gains not going to be consistent using that same flash for other cars wherever they are, but it's not even safe or recommended.
        Everything is negotiable at such a price. I am not condoning that I agree with it even though years ago I would have paid for it just to stay away from using a piggy back

        The same tune was flashed on a non IS runing the infamous IJE0S ROM and made more power than mine, of course he was FBO.

        All your other points are valid, I do believe RENNtech has a Warranty policy like Dinan does if I am not mistaken, but maybe limited.

        Their tuner owns an E90 N54, and he is very good at what he does. Not only is a he a BMW enthusiast but he is very well multi versed with ECU tuning from other platforms including AMG.

        Click here to enlarge Originally Posted by brusk Click here to enlarge
        ... The Dyno sheet looks pretty close to a Cobb OTS Stage 1+ or 2+.
        I would consider it something between Cobb's Stage 2+ Agressive and E30 maps

        For everyone else: So why did I go with Cobb AP in the end ? Simply put, i wanted more power and their was "risks" involved that was a concern IMO. I am already on my third drive shaft and 2 Chargepipe Click here to enlarge

        Could they have given me more power to where I am now, yes they could have if I pushed it, but I did not want to ruin my relationship with them.

        I also have the PTF E50 map, but now I have gone off on my own with my own tuning as I wanted to enable ALL the performance features on the 335is. I did not like the idea of the overboost being disabled, so I just reanable it with ATR and custom tuned my IS for E50 myself
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by RnmEvo9 Click here to enlarge
        LOL, I think you should do some more research on your competitors products, just saying.
        He's new... go easy on him.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by brusk Click here to enlarge
        I think the marketing audience is not on this forum. People that Buy Dinan, GIAC and Renntech typically wouldn't consider a BB Flash, Cobb or JB4. They just want to go into a facility and get their car coming out a few hours later with better performance. Most of these would probably come from other platforms that know that they had good luck with that tuner before. The Dyno sheet looks pretty close to a Cobb OTS Stage 1+ or 2+.
        Renntech advertises on the entire network. Their specialty is obviously Mercedes but they do offer BMW products as well and they are solid. Members here have good results with their products. So if they want to advertise their N54 flash so be it they pay to do so.
      1. mjmarovi's Avatar
        mjmarovi -
        @BuraQ no one is doubting the results, I'm sure it's a very high quality flash. I just want to know what all you get for the price and feel I was fair in assessing the overall feelings anyone would have if they were to research tuning options. I mean in the end you are saying it is basically a COBB OTS map, which hey, that's great, competing with the best flash currently available. But why so much? What do they do for people when they upgrade? How can they adjust the tune from a remote location?

        You're right, people that are clueless about the aftermarket world such as a friend of mine who had a 335i a few years ago and did all Dinan are happy to pay the price and feel the performance. But I'd gladly take $1500 and flash someones car for them with a Cobb AP and turn a quick $600 profit assuming I don't have a wholesale account. I just want to know the difference and advantage. A warranty is a big deal, cause that means it's a better option for new or nearly new BMW owners, so that would be a big deal. Hopefully @Mike@Renntech and shed some light in that area.
        @Sticky I'm glad they posted it, and wish more vendors would be involved in the N54 platform, just wish there was more info. I understand he's a new guy, and I think some guys are being a bit harsh, I don't feel I'm harsh, just asking proper questions for information I feel should have been included. I mean, where's the sales pitch?

        Look Mike, I know you're doing your job, and copy and paste your product details from your website might work on 6spdonline.com or bimmerforums, or whatever, but I'm just giving you a heads up, that won't happen here. However, if you show you have a valid product on this forum, us members at bimmerboost like to spend lots of money on our cars, and I think any vendor that has a good product and comes out with supporting details is more than rewarded on this forum. Just ask Team MFactory.
      1. brusk's Avatar
        brusk -
        Click here to enlarge Originally Posted by BuraQ Click here to enlarge
        I would consider it something between Cobb's Stage 2+ Agressive and E30 maps
        I wouldn't my car put down 369/419 on Cobb's Mustang with Stage 2+ with a curve that looked pretty similar to the Dyno they showed. I'm not knocking them as it's a pretty safe looking map with decent numbers perfect for the person that doesn't want to hassle himself with constantly logging and tweaking to get it set perfect.
      1. BuraQ's Avatar
        BuraQ -
        Click here to enlarge Originally Posted by brusk Click here to enlarge
        I wouldn't my car put down 369/419 on Cobb's Mustang with Stage 2+ with a curve that looked pretty similar to the Dyno they showed. I'm not knocking them as it's a pretty safe looking map with decent numbers perfect for the person that doesn't want to hassle himself with constantly logging and tweaking to get it set perfect.
        Was your dyno before or after adaptation to the tune ie you already put miles on the tune before dyno ? The dyno results in the OP are premature before adaptation.

        RENNtech's dyno which is a dynojet reflects similar numbers on a Mustang dyno. I did this cause i dont like dynojets which often read high, however, RENNtech dynoject reads low as it was on par with the Mustang Dyno I did at PROs tuning - another Cobb authorized tuner.

        In real world experience I have pulled on N54's runing Cobb Stage 2+ (not disregarding I am DCT) and except for one that was a 135i.

        So based on the real world performance results and dyno tests is the reason I said between stage 2+ Aggressive and E30 OTS maps.
      1. brusk's Avatar
        brusk -
        Click here to enlarge Originally Posted by BuraQ Click here to enlarge
        Was your dyno before or after adaptation to the tune ie you already put miles on the tune before dyno ? The dyno results in the OP are premature before adaptation.

        RENNtech's dyno which is a dynojet reflects similar numbers on a Mustang dyno. I did this cause i dont like dynojets which often read high, however, RENNtech dynoject reads low as it was on par with the Mustang Dyno I did at PROs tuning - another Cobb authorized tuner.

        In real world experience I have pulled on N54's runing Cobb Stage 2+ (not disregarding I am DCT) and except for one that was a 135i.

        So based on the real world performance results and dyno tests is the reason I said between stage 2+ Aggressive and E30 OTS maps.
        Went in with Stage 1+ for a run and then switched to 2+ with no previous driving on it.
      1. RnmEvo9's Avatar
        RnmEvo9 -
        Click here to enlarge Originally Posted by BuraQ Click here to enlarge

        In real world experience I have pulled on N54's runing Cobb Stage 2+ (not disregarding I am DCT) and except for one that was a 135i.
        Click here to enlarge