68 Chevy C10 with stock 2000 5.3 with headers and rear o2's deleted.
cant seem to get the damn thing to idle despite all my efforts. any suggestions would be much appreciated.
jim68.3.hplJIM68C-10.rearO2Delete.hpt
68 Chevy C10 with stock 2000 5.3 with headers and rear o2's deleted.
cant seem to get the damn thing to idle despite all my efforts. any suggestions would be much appreciated.
jim68.3.hplJIM68C-10.rearO2Delete.hpt
Whats your fuel pressure?
Those fuel trims aren't doing so good, they look super lean.
Also this tune file is for a 4.8, you'll want to copy over in 5.3 data for cylinder volume, VE tables, idle airflow tables and so on to make it run correctly. Plus go in and disable all your rear o2 sensor codes and yadda yadda. Also check that you have zero vacuum leaks.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
my apologies. it is a 4.8. new pump for LS, using c10 tank, aftermarket pump and reg, with return builtin. checking pressure now
100+lbs....lol
ill start there. thanks for the common sense...lol
sometimes it takes another set of eyes to see, or someone not pissed thinking clearly.
Yeah, 100psi won't let the injector work right. See what it's like once it's back down to 58ish.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
this is also a great resource for idle tuningOriginally Posted by Whitten80
https://forum.hptuners.com/showthrea...e-(w-pictures)
i'll bet the return from the regulator is blocked or the regulator is hooked up wrong.
Tuner at PCMofnc.com
Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs
Reply With Quote