need help!!!!
Hey guys i need some help. I just got done putting a new cam in my 8.1L its a comp cams xr270H and i need some help to tune it i was wondering what i need to do if you can help me i can email you my log data from tonight if you would be willing to shoot me an email at 6.5ldiesel@live.com please any help is appreciated and thank you in advance.
2002 Chevy 2500HD 8.1L Allison Combo
CAI,True Dual 3in Exhaust,Throttle Body Spacer, Comp Cams xr270, Comp Cams Roller Tip Rockers, Working On tuning with EFI LIVE
Hello Smokin6.5l,
Do you have a wideband O2 you can use for tuning ? If so, have a look at the AutoVe Tutorial - it should help you dial in your “new” VE and MAF values. The cam upgrade will probably reduce VE at lower RPMs and increased VE at higher RPMs.
If you don’t have a wideband O2, then take a look at the CalcVE tutorial. There are many threads on the Forum that discuss how to use each of these techniques.
Regards,
Taz
Here is my tune file and data log
i am attaching a tune file and data log for the truck. If someone could take a look at them for me and help me with tuning this thing it would be greatly appreciated. Oh ya taz i do not have a wideband o2 sensor.
2002 Chevy 2500HD 8.1L Allison Combo
CAI,True Dual 3in Exhaust,Throttle Body Spacer, Comp Cams xr270, Comp Cams Roller Tip Rockers, Working On tuning with EFI LIVE
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