AFR consistency per gear?

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Aug 16, 2006 | 09:37 AM

#61

RazorLab

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From: Mid-Hudson, NY

Quote:

Originally Posted by nj1266

Here are my test results. I have done about 5 full 3rd gear wot pulls and shifting to 4th gear and going WOT until approx 6300 rpm. In each and every one of them the AFR in the 4th gear was richer than the AFR in the 3rd gear. The 5500 rpm point in 4th gear is the spool up point after the shift. That is why it dips well below 11:1.

And here is my 3rd to 4th gear (and had 1st and 2nd before those):

https://www.evolutionm.net/forums/sh...9&postcount=51

Consistent AFR. Maybe it's the tune?

Aug 16, 2006 | 10:09 AM

#62

nj1266

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From: USA

Quote:

Originally Posted by razorlab

And here is my 3rd to 4th gear (and had 1st and 2nd before those):

https://www.evolutionm.net/forums/sh...9&postcount=51

Consistent AFR. Maybe it's the tune?

Could be the tune. I would love to know how you did it. I am not there yet.

Aug 16, 2006 | 11:56 AM

#63

Ludikraut

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From: 41° 59' N, 87° 54' W

Bryan, out of curiosity, did you adjust the accel enrichment at all? ...and how did you scale for your injectors? (e.g. fuel table only, injector scaling + fuel table, or other).

l8r)

Aug 16, 2006 | 12:02 PM

#64

RazorLab

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From: Mid-Hudson, NY

Quote:

Originally Posted by Ludikraut

Bryan, out of curiosity, did you adjust the accel enrichment at all? ...and how did you scale for your injectors? (e.g. fuel table only, injector scaling + fuel table, or other).

l8r)

Haven't touched accel enrichment.

720cc's scaled via injector scale + volt and then tuned.

I do see richer AFRs in 4th over 3rd sometimes however, like on ramps, etc. Flat ground not so much. And it's never a huge difference.

When and if I finally get my car back on the road I can do a bunch more logging.

Aug 16, 2006 | 12:05 PM

#65

Ludikraut

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From: 41° 59' N, 87° 54' W

Cool, thanks.

l8r)

Aug 16, 2006 | 02:17 PM

#66

JohnBradley

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From: Northwest

Quote:

Originally Posted by TTP Engineering

I am going back to accelleration enrichment tables based on TPS input. I believe TPS input enrichening to be the culprit.

Have you tried changing the open load maps to what the 05 is? We tried this on NDGsx's saturday at the strip and the car run incredibly better up top. Didnt log it at that time to be sure but we will be doing that this weekend.