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    • 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. nbrigdan's Avatar
        nbrigdan -
        @BuraQ Have you considered more aggressive tires than NT555s? I have found almost all Nittos don't grip that well compared to some alternatives, especially their drag tires aren't the best, but still decent. I would like to see some ETs with proper tires!
      1. BuraQ's Avatar
        BuraQ -
        Click here to enlarge Originally Posted by nbrigdan Click here to enlarge
        @BuraQ Have you considered more aggressive tires than NT555s? I have found almost all Nittos don't grip that well compared to some alternatives, especially their drag tires aren't the best, but still decent. I would like to see some ETs with proper tires!
        I actually gave up the NT555 for PSS tires, and the PSS are about done for on the rears. I like the PSS, havent really put them to use on the track yet, the times I visited the strip with them the track was $#@! prepped, so I never really got to really test them out, However for rolls, and wet roads they gripped damn well. Most important though the "ride comfort" is the best expereince I have ever had with a tire
      1. Puerto Rican 335d's Avatar
        Puerto Rican 335d -
        Buraq glad to hear from you I made the change from Hankook Ventus to PSS and DAMN it i cant replicate the swirving and screeching I had with the ventus these PSS grip like mother faulker, and tru on wet roads they're superb specially here in an island that rained almost 9 months last year. And yes they're quieter
      1. V8Bait's Avatar
        V8Bait -
        That's a lot of power for a stock car... if this is happening on pump, then the owner of that car has some major balls.
      1. BuraQ's Avatar
        BuraQ -
        Click here to enlarge Originally Posted by V8Bait Click here to enlarge
        That's a lot of power for a stock car... if this is happening on pump, then the owner of that car has some major balls.
        It was my car. I ran it for almost 6 months with just an upgraded FMIC before I added DPs w/HighFlow catts and an upgraded intake system. They highly recommend at least an upgraded FMIC.

        I virtually beat the hell out of the car with that tune and zero issues, tracked it every week at PBIR. What helped a lot is that RENNtech is able to increase water pump speeds. So my oil temps held at 220f - 230f and ECT just below 200f in 90f ambient temps on back to back WOT runs. This is one part of their tune that has a value as no other tuner that I am aware of, other than Dinan, can remap the water pump.
      1. V8Bait's Avatar
        V8Bait -
        Click here to enlarge Originally Posted by BuraQ Click here to enlarge
        It was my car. I ran it for almost 6 months with just an upgraded FMIC before I added DPs w/HighFlow catts and an upgraded intake system. They highly recommend at least an upgraded FMIC.

        I virtually beat the hell out of the car with that tune and zero issues, tracked it every week at PBIR. What helped a lot is that RENNtech is able to increase water pump speeds. So my oil temps held at 220f - 230f and ECT just below 200f in 90f ambient temps on back to back WOT runs. This is one part of their tune that has a value as no other tuner that I am aware of, other than Dinan, can remap the water pump.
        Nice numbers for sure. That's a lot of power for 93, they did a good job seems like. May have missed it but is the 420hp claim at the engine then, the dyno shows 379whp... which is great for stock 93 octane on a baseline of 270whp but not as crazy sounding as 420whp would be with that same baseline.

        I remember your car from back then the video's and claims caused all sorts of drama because it was way faster than anyone else could get at the time, especially with the DCT. Which was pretty cool I thought.
      1. BuraQ's Avatar
        BuraQ -
        Click here to enlarge Originally Posted by V8Bait Click here to enlarge
        .... May have missed it but is the 420hp claim at the engine then, the dyno shows 379whp... which is great for stock 93 octane on a baseline of 270whp but not as crazy sounding as 420whp would be with that same baseline.
        Its 420 at the crank rated in HP, and 379 rated in whp. Here is an add for them with my car

        Attachment 37563
      1. nbrigdan's Avatar
        nbrigdan -
        Click here to enlarge Originally Posted by BuraQ Click here to enlarge
        I actually gave up the NT555 for PSS tires, and the PSS are about done for on the rears. I like the PSS, havent really put them to use on the track yet, the times I visited the strip with them the track was $#@! prepped, so I never really got to really test them out, However for rolls, and wet roads they gripped damn well. Most important though the "ride comfort" is the best expereince I have ever had with a tire
        Ya, when PSS are available they are the only tire I run. Amazing street tire IMO.