Not seeing the gain I expected. :-( What's going on?? **solved**

[Nah]

Originally Posted by freerunner

Interesting. I'm in.

Same here. Keep us posted KN

[aagun]

Originally Posted by Nah

Avcs doesn't effect AFR. I tried addressing the rich dip with avcs. No bueno. The rich dip is due to an incorrect load calculation. So that leaves MAF and Load Limits. Right at 50-60 g/s on the MAF scale take away a % or two. If that doesn't work Perhaps raise your load limits a tad. Around 1.12. Uhhhh, if you're not gaining power up top it's Becuase your VE is off. Which is due to AVCS... But before you do that fix your FLKC. The ECU will just run richer and not as smooth.

Back to avcs, start by adding/removing 5 degrees to the intake cam and 5 for the exhaust. cam. Log a WOT pull. Compare where you gained power and where you lost. That'll give you an idea where to start.

Also I actually prefer shivs injection ratios with port injection restored at 5000 rpms. Keeps AFR's flatter in that 3-4K region and allows me to run more timing and intake advance in that area for better performance.

AVCS does affect your tune . if u run OL and OVERLAPE it
ext avcs + intk avcs = 56+ will throw unburn fuel to the ext

[Nah]

Originally Posted by aagun

AVCS does affect your tune . if u run OL and OVERLAPE it
ext avcs + intk avcs = 56+ will throw unburn fuel to the ext

Hmm true I should have been more specific. Personally I didn't see any change in AFR when adding or subtracting 5 degree to both the ext and int cam

[solidONE]

Originally Posted by Tor

Yes, that's what I meant with locally more power. But once the wheels grip again I would assume the subsequent data would then be calculated as a decrease and looking over a bigger part of the graf RPM would build slower because time was wasted spinning the wheels?

It's just what I've seen from using the program. At least on the logs that I've looked at more closely. I know there is one effective way for you to confirm or deny this.. convert your own logs with spikes in the RPM.

[Kodename47]

Originally Posted by Kodename47

86Inches on Romraider has just released a spreadsheet that gives a perfect exponential curve, I have yet to flash the result but a well respected user says that it makes the car smoother..... will feed back and post my version of the tool if it works.

Here's the link on Romraider. You'll see my version is there to download which helps a little. Probably best to read the whole thread.

[Tor]

Originally Posted by Kodename47

Here's the link on Romraider. You'll see my version is there to download which helps a little. Probably best to read the whole thread.

Thank you! I found the thread when you mentioned it the first time and already messed a bit with it.

I coincidentially already had some excellent logs (3+ hours casual driving and WOT pulls) with the tune I was running when I started this thread. I put the logs through the MAF tool and into the excell sheet following the instructions.

It would seem that there is still alot of manual (guess)work to do. Since, in my case, the AVCS mess up the WOT part of the corrected scale from the MAF tool, it would still be required to be able to judge what makes sense and what not (I guess "the art of MAF scaling")?

Anyway, even with my limited skills in sorting BS from real required adjustments, I didn't find the changes to be that dramatic from my current scale. Especially in the lower volt ranges, before the AVCS kicks in and messes things up.

I might give your version of the tool another more thorough try. Clever thing with the expanded lower MAF scale view. But I think my MAF scale is already pretty good and I would be very wary of messing with it. Looking forward to hear your impressions driving with it.