running rich at wot why?

[blackstallion]

I think its ignition related whenever i raise my boost my car sputters and pops i thought it was the alky so turned it off car did the same thing i lowered the boost from 19 to 15 so i can stay at wot longer still sputtered and popped went down to 12 pounds and it didn't sputter or pop it did hesitate at wot one time but it has not done it since at 12 lbs boost also my car runs very rich at wot 02's start at 890mv and don't even get into the 790 the lowest i get is about 840mv block learn is at 128 and and may go to 120 to 133 during cruise for second the intergrator does the same at wot its at 128 block learn goes to 110 so its rich,30 pound injectors,237 reg,3inch atr,110 jay jackson chip,alchy inject.Could my cam be wiped 125k?my module was replaced at about 52k miles coil pack was replaced last year napa brand not delco,car runs rich only at wot performance sucks now cracked header was fixed last month and is fine

 

[Razor]

890's for O2's is very typicall on our motors. Hell my old car would say 900's when I initially stabbed it. Its a MAF car.. so its what it is.. The O2 dropping into the 700's only happens when the boost being run complements the chips WOT fueling.. so a 18 PSI chip run at 14 PSI will be way richer... its hard to judge rich? If anything it lays down and doesnt pull.

Typically its hard to be rich and sputter at higher RPM's/boost. If it pops..sputters.. at high boost its typically coil pack ignition module.

Put your spare on and verify. Dont have a spare??? Go get one..

Here's your sure fire test.. drop in 5 gallons of 110 in the gas tank when its low.. and start upping the boost without the alky. If it leans out into the mid 700's and doesnt pop and sputter.. then look into other areas for the issue.

HTH

 

[blackstallion]

ok i think i found the problem my ground strap from my bettery to the cylinder head underneath the turbo was very very loose,i also went and bought i delco 02 sensor which was the one the car had untill i decided to try race gas instead of alky for a month and put in a napa brand 02 sensor,i also noticed on my scanner that the car starts to sputter when the 02 sensor (napa brand)shows crosscounts at wot?Then my car car acts up, when i had the delco sensor i never had 02 crosscounts at wot.Well it just started to rain so i will have to wait till tomorrow.