Wael El-Dasher,
I think he was saying that at WOT, when compared to the baseline dyno (with Mugen Headers, before the TODA installation), the car was running leaner than it was previously.... As far as logging.... I am sure they have a printoutof the RPM versus A/F ratio of the run................
Beroz

 

Actually he tunes by osmosis, telepathy and ESP.

 

I saw UL tasting the crud from my tailpipes last time I was there.....

 

See. That's what I meant. Like a super hero.

 

And here I thought he pulled the #'s out of his Ass like many other members do.................

 

The Dynapack logs a MOTEC black wideband sensor, along with all ambient conditions, manifold pressure, torque, hp, etc.

A car with a stock ECU runs very rich, and the Mugen header does nothing much to change that, especially up top. Prolene's car has a Mugen ECU, test pipe, N1 exhaust, etc. and was running pretty close to optimal before the Toda header. After adding the Toda the mixture came up by anywhere from 0.5-1 full A/F ratio point.

UL

 

UL what would you say is "optimal"????
Beroz

 

I would like to see any print outs if possible. My car was running low 11's to high 10's in A:F. I was really surprise so see such numbers from a NA engine.

So what A:F did you target? I assume the 14.7 is not the goal with this engine? Perhaps somewhere in the 12:1 range?

cheers

W

 

After reading UL and other's posts, I targetted 13.7 after the catalytic converter. Here is my AFR plot before and after tuning.

 

That's pretty much what I have it tuned to gernby,.....