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Dec 3, 2006 | 08:59 PM

#16

JohnBradley

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Joined: Jan 2004

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From: Northwest

Quote:

Originally Posted by nj1266

Unless you have been to make your AFR the same in 3rd and 4th gear (something that I have yet to figure out how to do), your afr in 4th gear would be lower than in 3rd gear. So logically, you should have less knock and not more.

Those of us who have not figured how to make the AFR the same regardless of gear, tune in 3rd gear. My car is currently tuned to run @ an average of 11.5:1 in 3rd gear. If I tune it to run the same AFR in 4th gear, then my 3rd gear AFR would be @ around 11.8-12:1 which is way too lean for 93 octane gas that I use.

I thought we figured this out a long time ago? The chart isnt there, but it was simply adjusting the open load tables to match a car that we knew was consistent )05-06)

https://www.evolutionm.net/forums/sh...3&postcount=46

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Dec 5, 2006 | 06:21 PM

#17

EVO2003VIII

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Joined: Nov 2003

Posts: 54

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From: Puerto Rico

in my personal opinion if the car has more than 300 hp at the wheels I like to tuned it in 4th ; that way is going to be perfect in all the remaining gears without having problems if you want to hit it 4 and 5th wot. But once again that is my opinion.

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Dec 5, 2006 | 09:01 PM

#18

SophieSleeps

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From: Butthole, MA

Quote:

Originally Posted by JohnBradley

what's the answer? I read that entire thread and couldn't find anything of use.

I tune in 3rd because 1 and 2 being slightly leaner is ok for me. I'm not in boost all that much in those gears. However, prolonged boost and rising EGT's in 4th and 5th gear need to be richer.

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