Type: Posts; User: JoshBoody
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Yesterday, 01:49 PM
Knowing boost is definitely important, but really many other platforms will max out the ECU visibility. If you can stabilize WGDC, you can still tune relatively well… should at least externally log...
01-01-2015, 02:30 PM
I didn't read much of the thread, but assuming there's dimensional issues with spec clutches. I've been researching clutches for c5 vette and seems there are similar issues. I take it spec production...
12-30-2014, 01:36 PM
Nice thread, you people are smart.
Pre-turbo pressure has always been discussed, but surprised we still don't have data (at least to my knowledge).
IIRC RB 20psi HP is 530ish with stock intakes...
So there's a difference of 30-40% WGDC between inlet on or off?
What's the boost diff around 6k?
And the comparisons with same turbos with and w/o stock inlets... maybe someone could post the...
I'm interested how DME determines knock. I currently have some experience with ls1 and "think" knock retard (at least on ls1) is primarily based on amplitude... which is not the best approach i'd...
12-09-2014, 01:55 PM
I don’t think you can relate voltages between NB and WBs. NB is passive with voltage reading either rich/lean depending on O2 content. WB tries to keep a fairly stable voltage using current to pump...
You can make a DV tester with few parts from home depot... very useful for peace of mind.
clear hose with clamps necked down to quick connect and use a large syringe to equal pressures.
25" at WG and 6" close is pretty conclusive for working vac system and WGs. How about turbo to IC... check it thoughly. When logging any "new" swing in fuel trims after the install?
11-17-2014, 06:17 PM
Comparing WP and PTF, the approaches are similar…
WP is setting a WGDC which exceeds the MAP in the mid-range. PTF does similar DC tuning which is apparent in the top end. Which is worse… MAF on...
11-17-2014, 04:52 PM
Ahh, thank you for the warm thread welcoming… glad to be here.
11-17-2014, 04:41 PM
What? This is exactly what PTF does (or did for the longest time)… set a high target and bump off the DC max. Is it really that much different.
Do other platforms have the “hey I can tune the...
10-09-2014, 01:03 PM
Ha, torque vs HP discussion… every month there’s one on this forum. When factoring acceleration, torque is useless without time… which is HP. You can take torque at x rpm but you have to relate 2...
09-29-2014, 04:35 PM
Can do an experiment to see max VANOS... my idea is to exaggerate set points and see actual. This should give the limits.
In general air flow when MAP>exh BP its best to reduce overlap. But...
right, but they can open multiple times with min of like 1/10ms... but good luck with the programming in the DME. I don't think cyl pressures are a concern, especially in the first half of comp...
Thanks I'll prob replace them when I redo my pcv. For now I took the easy route and reduced sensitivity in the pcm... i'm on E45, but still all rattly noise scare me and there's a bunch on an old...
I've written a DC table almost from scratch before and changed PID... not easy. Along with WOT have to log everywhere inbetween also.
On the fueling side, I found some old logs... inject voltage...
09-08-2014, 05:40 PM
IDC isn’t so useful unless you know the window set and seems this is based on pressure according to Tony’s explanation of what happened during the dyno sessions. Note that Tony stated that AFR...
09-05-2014, 08:04 PM
Huh, I was exactly right... explaining that you are running out of injection window. The reason higher pressure setpoint didn’t help is because the DME may adjust the window based on pressure. Still...
09-05-2014, 07:39 PM
hmmm, cough... I be quiet.
Did you up the pressure setpoint?
09-05-2014, 11:27 AM
Yes of course, as expected... the point is that there's multiple causes for not meeting AFR target in this case.
09-04-2014, 07:01 PM
oh man, I feel obligated to explain. Correct, injector has plenty of flow based on communicated specs. But injector can only open as much as the DME will allow it. DME has a window which has not been...
09-04-2014, 05:48 PM
With the valve more open Tony will get higher pressure and this will help but there's 2 causes here... IPW and rail pressure. DME has a certain injection window, which we do not know... we can log...
09-04-2014, 05:09 PM
doesn't matter who, its what's being said... this is straight forward stuff based on data. If you take the time to read/response, hope you consider what's being said. Or you can just wait until DZ...
09-04-2014, 03:38 PM
Look Tony, you meeting pressure setpoint may get you back to AFR BUT these logs are good insight into potential further issues… especially with ethanol. Hopefully you are trying to understand what...
09-04-2014, 02:30 PM
Well I got kicked out of Tony’s thread… he does give a bunch of data (meant to say has fallen short in HP).
Anyway, comparing these 2 setups would be very interesting if the OP is not using...