Hey, anyone running a stage 2 tune and 42,s with a 3" pulley, what is your AFR at WOT?

 

10.5-11.2

 

Rich and safe.

 

It should start out at low 11's/high 10's and at redline be low/mid 10's.

 

lmao thats the afr im getting with my ottp stage one now it went from 11.6s to 10.8s and 11.0s now but oh well better safe than sorry i guess

 

lmao..it was a cooler night ..wot in third gear....9.9-10.3 lmao thanks gm

 

gotta love GM, I was in the low 10's as well all through the powerband.

 

Yeh haha get this...
1st gear WOT - 10.0
2nd gear WOT - 10.0
3rd gear WOT - 10.4
4th gear WOT (lower RPM's) 10.5

 

read by an AEM wideband? It's prob lower than 10, since that's the lowest reading it puts out. Mine was the same way in some gears. At least it's safe, right?

 

Ohh yeh it is nice to know that everything is running safe and that there is still a nice tune possible for my car. Yes it is being read off of a AFR pod

 

http://www.hptuners.com/forum/showth...air+fuel+ratio


good thread about a/f sensors

 

Its safer than running lean, but running that rich isn't necessarily what you'd call.. Good , lol.

 

10 flat or a 9.8 if im lucky, rich ftl

 

Thats nice to know thanks guys.

 

dang... i'm pulling high 11's up to about a 12.4 in 2nd/3rd... no knock though so whatever

 

12.4 is a bit lean, probably won't hurt anything but you will get the most power from a 11.7 or so ratio.

 

Do you have any proof backing that statement up out of curiosity?

 

--x2

 

12.4 is lean, but I would like to see some dyno charts showing that 11.7 makes the most power.

 

A reputable tuner stated it a while back, I believe he said the most torque came from a 11.6 ratio and the most hp came from a 11.8 ratio. I don't know what to search for, but i'll try to find it.

 

If you could find that I would like to see if there was any proof/results backing it up or if it was just another random claim someone made lol.

 

i'm curious too...i'm trying to find it but no luck so far.

 

Well after the new tranny and clutch and axles and mounts and all that jazz is broken in I will put her back on the dyno and get some real dyno proof. See if at the same timing what afr the car likes the most . I will also be spraying the 50shot for the first time woot woot. Should be looking at around 330whp.

 

are you running meth injection? if not, 12.4 is too lean for a 2.8 pulley
how much timing are you running?