Target AFR for my setup

[pgoffner]

Mods are as follows:

Stock unopened motor
Stock turbo target psi 23-25
42.5 lb injectors
3.5" Downpipe
2.5" dual exhaust
Tin Man CAI
Alky TT Chip
Razors Alky kit
340 fuel pump
Racetronics Hotwire
Accufab FPR
Scanmaster
Boost, FP and WB o2 gauges


Just looking to see where a good target AFR would be for this setup, thanks.

 

[norbs]

About 10.8 with the alky on and 11.4 with the alky off if you can keep out of knock.

 

[Roc87]

Depends on how much alky, and what wideband. One wideband to another could be different. I am shooting for 10.8 on my autometer.

 

[pgoffner]

I have a AEM UEGO Wideband.....seems like 10.8 is a good AFR form what I've read and what you guys are saying. I'll just be running a single nozzle setup but I'm not sure how much alky it'll take to get 23-25 psi without any knock with 42lb injectors. I just want to get an idea range of where I should be with my AFR once I get the car to boost 23-25 psi with no knock.

 

[bison]

10.5-10.8 on alky and 93. 11.0-11.3 on alky and c or q16.

 

[pgoffner]

Thanks for the replies. You guys think I need to go with 60lb injectors now or should I wait for later when I go with a larger turbo? I just bought a Alky chip for 42's and thought about 60's after the fact

 

[Razor]

42's are more than capable for what your doing.