just dyno'd. AFR?

[Stevan26]

Hey guys. I just literally pulled off a Dyno jet and with my current mods in my SIG
(2500 miles on the motor)
Got 530rwhp and 535rwtq a hair low but I'll take it..

My AFR with a tail pipe sniffer.. was around 12.8-13.4 from low to higher rpm..

From what I've heard 11.7-12 is what we shoot for? But is that with wide band O2s
Or the sniffer in the tail pipe?

 

[Camper]

ur running a little lean, send the log files to Justin and he'll adjust accordingly

 

[Devious_Snake]

The tailpipe sniffer is not always accurate

 

[SuperFly03]

ur running a little lean, send the log files to Justin and he'll adjust accordingly

Kind of what I was thinking... Mine runs 11.5-12 through the RPM range.

 

[Stevan26]

No log file... Dyno graph

 

[me32]

are you running cats? if so that could make it look lean on the tail pipe.

 

[NightRide]

Tail pipe sniffer can be a point higher than where it reads on the front 02's. Even then it seems a tad high so data log and send it in just to be sure.

 

[Stevan26]

I don't have a wide band to data log. I have the graph... I won't have this tune at the end of the day.. going TVs n VMP is writing me a new tune.. but I just wanted to know.

My buddy just dynod after me. 2.5 pulley jlt 123, x pipe no cats. 11.8-12.3..

I think If I was keeping this set up. I'd add 2% at WOT..

 

[2011 gtcs]

Invest in AEM wide band, with any boosted car you always want to monitor you A/F ratio.

 

[NightRide]

Invest in AEM wide band, with any boosted car you always want to monitor you A/F ratio.

+1 it is the best couple hundred dollars you will ever spend and can save you a 10k plus motor rebuild.

 

[Bad500Chris]

are you running cats? if so that could make it look lean on the tail pipe.

I'm guessing this is the cause.

 

[fullboogie]

A good wideband logging through the tailpipe with cats should be no more than .1 or .2 higher (leaner) than a sensor installed before the cats. I've personally witnessed this countless times. You're either running very lean, or the dyno wideband was junk. I'd figure it out if it were my car.

 

[Stevan26]

talked to BJ from vmp.. were gonna figure it out. its not the dyno..

my buddy with a 07 with a 2.5 upper, jlt 123 intake, offroad X pipe got a 11.6-11.8...

both have no cats.. stage 2.. vmp tunes. runs right after another.. both made 530rwhp...

any possible way it was skewed for my runs? i have now sense installed my TVS and VMP will be sending me tunes for it tomorrow or wednesday i hope.. so this problem wont be an issue.. i hope..

as for a wide band.. u think get a gauge and install it? or just buy a box set up and moniter it every mod and tune change?

after i get my tunes for the TVS im gonna goto the dyno and do a some runs.. check my AFR on it.. will that work for now? so i can see.. i want to drive the beast asap ha