I was wondering on your AFC what kind of pattern do your correction percentages go. Do they increse, decrease, go up in the powerband, lower out of it. I dont think mine are set correctly cause I have more than enough fuel and my EGT's are still pretty high (freeway driving in 4th/5th). Can EGT's go up due to running rich?? Any help would be greatly apprieciated.

Thanks,
Thomas.



99 GS
Star Stage II
T04E 57 series
Apexi S-AFC
Apexi AVC-R (set to 0.4 kg/cm2 low --> 0.6 hi)
APEXi EL EGT, Autometer A/F
APEXi TT
APEXi N1 Exhaust

I pulled this off of the HRC tech information for you:

"Easy error for new users of EGT: high temps indicate lean condition. Not always true! Excessively rich conditions will result in "after burn", where the fuel, which was unable to completely combust due to insufficient oxygen in the cylinder, lights off in the exhaust system, causing an unusually high temp reading. If all other indicators still suggest a rich mixture, try leaning in small steps, and you will likely see the EGT go down. Just be sure that the power does not also go down from the changes. If you are on the right track, power should go up noticeably as you lean towards optimal mixture while EGT drops. As you approach and then pass the optimal mixture point, the EGT will begin to climb again. STOP! Richen by one step and you are there! Now, when climatic conditions worsen (i.e.: hotter temperature, more humidity, less air density), lean until you get that optimum EGT again. If conditions improve (colder weather, lower altitude, less humidity), richen for optimal EGT. Bear in mind: if EGT suddenly changes for no apparent reason, you may have an aggravating factor (ignition problem, fuel pressure wrong, clogged air inlet, etc.) which is unrelated to tuning. Be observant, and the indicators should guide you to the right tuning decision."
http://www.turbosystem.com/auto/tech/info.htm

Hope that helps.

Jason
98' Eagle Talon ESi-T
Mitsu Super 16g Turbo(HRC)/Custom FMIC

http://springfielddsm.homestead.com/JasonsPics.html

Thnaks man. So what kind of patterns as far as percent per RPM range am I looking for. What are your settings at?

99 GS
Star Stage II
T04E 57 series
Apexi S-AFC
Apexi AVC-R (set to 0.4 kg/cm2 low --> 0.6 hi)
APEXi EL EGT, Autometer A/F
APEXi TT
APEXi N1 Exhaust

It takes forever to set the AFC...atleast to get it perfect. It took me 2 weeks to get mine where I was happy...Just get use to it and tune as you go...

Yeah I know I am doing that as well, little increments/decrements here and there. I am just looking for a pattern that I should be watching for, not specific numbers.

Thanks.

99 GS
Star Stage II
T04E 57 series
Apexi S-AFC
Apexi AVC-R (set to 0.4 kg/cm2 low --> 0.6 hi)
APEXi EL EGT, Autometer A/F
APEXi TT
APEXi N1 Exhaust