Just wondering if there is an average number like from 11.0 to 11.5 after adding test pipes.

 

Stock boosted not boosted what mods any info?

 

he has vortech

 

I've actually been wondering this myself. Can anyone chime in? I'm on JWT 530bb kit at 7 lbs

 

Vortech
3.12
440 injectors
walbro
plenum spacer
y-pipe
fuji exhaust

 

there's no def answer...the free'r flowing your exhaust gases are, the leaner you'll be. If you're 12.5:1 now, you could see up to a point and a half higher which means you'll need to pull more timing...what are you boosting, 8lbs?

 

8lbs

 

have you had it tuned? Also, are you reading AF from the tail-pipe or cat? I've seen up to half a point dif between the two. Richer at the cat than at the tail-pipe.

 

I had kinetix cats on my G and they worked GREAT...actually, they still do, just not mine anymore.

 

It's been street tuned to around 11-11.5 AFR. The reading was taken from the cat.

 

I went from hfc's to TP's and it only leaned me out like .2-.3

 

+1

 

ditto

 

What we dont know is he coming from stock cats to test pipes......if he is he will def run lean......at least that is what my tuner said and i trust his knowledge.