new tune here please someone check it out tell me whats wrong

[[email protected]]

new tuner here need help with this tune to see whats wrong with this doesnt run well 2003 ls 6.0 ltr with sloppy stage 2 cam and lc9 heads in a 78 trans am plz help


1st idle log ta.hploriginal tune 6.0.hpt

[edcmat-l1]

Almost looks like the O2s are grounded. That or it's dead ass lean. You check fuel pressure?

[[email protected]]

Yes fuel pressure is 60 psi also uploaded original tune and it shows long and short term fuel trims disabled and ect set to 285 so never goes into closed loop does this sound right

[edcmat-l1]

Yep looks like Dr. open loop had his nose pickers in it. I'd turn it all back on and the trims will tell you how far off it is.

[2xLS1]

Yep looks like Dr. open loop had his nose pickers in it. I'd turn it all back on and the trims will tell you how far off it is.

Beat you to it. See post #5

https://forum.hptuners.com/showthrea...ny-help-please

[SiriusC1024]

Part of the problem is people following along with Goat Rope Garage videos. He does OL tuning.

[[email protected]]

Can I go into editor and just enable my fuel trims or it needs to be programmed in pcm

[gtstorey]

Modify in editor, save as and then "Write Calibration" back into the ECM.

You probably need to make sure you save your original file backup in several locations. Although it sounds like this one might be about worthless and not as important as it usually is.

[edcmat-l1]

Beat you to it. See post #5

https://forum.hptuners.com/showthrea...ny-help-please

LOL nice!

[SiriusC1024]

Can I go into editor and just enable my fuel trims or it needs to be programmed in pcm

Yes. 2003 Silverado 2500 CL enables restored in the attached.

[[email protected]]

Do I need to change my ect from 285 to something else so I achieve closed loop and also my obd is underhood so it?s hard to test drive and log only can do it at idle is that ok

[SiriusC1024]

See above. Don't forget the STFT OL enable in the Open Loop tab.

You need to be able to log while driving. Figure out the harness.

[[email protected]]

Ok I?ll add on to the obd harness so it reaches inside of vehicle thanks everyone for the advice it helped tremendously

[SiriusC1024]

Post back a log and we'll look it over for you. MAF has been adjusted but VE hasn't.

Probably have to pull the radio fuses to write the tune.

[[email protected]]

Ok thanks will do that and repost this weekend thank you sir

[gtstorey]

Probably have to pull the radio fuses to write the tune.

This is a swap so it might not have that issue, depends on what was used from donor.

[[email protected]]

Just the 6.0 engine and factory pcm and have painless wiring harness

[SiriusC1024]

This is a swap so it might not have that issue, depends on what was used from donor.

Oh sure enough. 78 TA.