Is it normal to see lean readings on the wideband after turning up the boost from stock level 19psi to 21-22psi? I just installed a Hallman MBC and turned up the boost, spikes to 23 and levels out to 21 or so. I also have been using SAFCII to tune with and before increasing boost I was leaning it out to about -7 in the top end and getting 11.2-11.3 AFR's. I zero'ed all the settings before running with the increased boost and still got around 11.6-11.8 AFR. Also tried to richen it up with some + numbers from 4000-7500 but then started getting fuel cut. Now I just turned down the boost a little more to about 20psi and still getting timing pulled... Probably just the cheap *** 91 gas here in Cali..

 

Talk to Scott Gray or the guys at TT. They can help out with our crap 91 gas and the S-AFC.

 

AFC settings? Mods?

 

afc all set at 0 now.. mods: TB exhaust, HKS RS intake, hallman MBC.. everything else stock

 

Just curious but what wideband do you have? And how much did you get it for

 

i put in race gas today b/c i got a new header and didn't have time to tune it yet. put it up to 22-23 psi and hit fuel cut in 3rd at higher rpms. i guess we need a flash too. better not happen at the track damm!t.

 

LM-1.. got it used for $230 or so