air/fuel going crazy
air/fuel going crazy mods are 6.0lq4, efans, d1 pro, 3.6pulley 13-14psi , snow performance meth , nos, p.g 231-247 617-623 115lsa+4 cam ,patriot stg 2 heads 317's , lt's , x pipe dual 3inch exhaust ,built 4l60e , 373 with trutrac posi , custom tuned still using maf
i was giving some w.o.t runs on my truck today , from a 60 roll like 4 runs and all were at 10.8 11.0 a/f in 3rd gear so i stop and on my snow performance box i have it set to start 5 psi more or less and full was around 10-11psi, so i move the full to 19lbs so it wont turn on to full to c if i can lean it a lil and gave it another gas punch, my a/f was 9.9 all the way so i stop and check the box everything was how i moved it and gave it another run it felt sluggish and still 9.9 a/f, so i set the full back to where it was and still rich as hell , could it be something wrong with my meth kit all runs i was picking up the same amount of boost so it should not of richen out.
the truck sat there for like 20-25 mins and went and tried it again a/f was 10.7- 11.4 the stoped for like 5 mins did another run a/f was at 9.9 - 10.2 , and the 3rd run after that 10.7 - 11.3 why is my a/f going diff on different runs can it be high iats or something ?
i can cut power to the meth but im scared it may blow if i get too lean
i gave it another punch and my friend said i had a ball of fire coming out my muffler , i even tried pouring washer fluid by its self with no heet and still 9.9 on the second run
i know its a truck but some of u are running similar setups and im trying to get help can anyone plz help me
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i was giving some w.o.t runs on my truck today , from a 60 roll like 4 runs and all were at 10.8 11.0 a/f in 3rd gear so i stop and on my snow performance box i have it set to start 5 psi more or less and full was around 10-11psi, so i move the full to 19lbs so it wont turn on to full to c if i can lean it a lil and gave it another gas punch, my a/f was 9.9 all the way so i stop and check the box everything was how i moved it and gave it another run it felt sluggish and still 9.9 a/f, so i set the full back to where it was and still rich as hell , could it be something wrong with my meth kit all runs i was picking up the same amount of boost so it should not of richen out.
the truck sat there for like 20-25 mins and went and tried it again a/f was 10.7- 11.4 the stoped for like 5 mins did another run a/f was at 9.9 - 10.2 , and the 3rd run after that 10.7 - 11.3 why is my a/f going diff on different runs can it be high iats or something ?
i can cut power to the meth but im scared it may blow if i get too lean
i gave it another punch and my friend said i had a ball of fire coming out my muffler , i even tried pouring washer fluid by its self with no heet and still 9.9 on the second run
i know its a truck but some of u are running similar setups and im trying to get help can anyone plz help me
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Check for air leaks, like a bad collector gasket, somewhere close to the O2 sensor. My gasket on the O2 side blew out a chunk of it on the side, and my normally stable AFRs started going all over the place - fine one minute, crazy the next.
Lucky it was a simple fix.
Jim
Lucky it was a simple fix.
Jim
did already and no leaks on exhaust
