jonecap

Anybody tuned their hotcammed LT4 with TunerCat? If so, I'd like to get a look at your bin file. My car has been tuned, but the part throttle drivability is still a little rough and I'm thinking that there is some table that needs adjustment to sort things out.

Thanks guys....

STL94LT1

Check your PM's.

astegman

I have pretty much the same set up as you and a tune from pcm4less.I am also having a problem with missing under slight throttle at cruising speeds, any ideas would help I am a master tech for 15 years and cant figure this thing out. thanks adam

rlane5

the slight miss might be because of the intake the LT1 is an open plenum intake which kill a little bottom end but once you get above 2000-2500 and higher the engine comes alive. I've tried different intakes and cams one being Hot cam and LT1 convertion intake and Super Ram with a GM 847 cam plus using a DFI setup. and the LT1 intake was alway sluggish on the bottom end.
Randy

neat

I don't think he is having sluggish issues, it's just a little jumpy under load at low RPM.

You might try pulling some timing out of the area where the problem is. If that doesn't fix the problem, try adding a little timing. Most of the driveabilty problems we encounter at the shop can be tuned out with small timing changes, in your case I would think just 2-3 degrees will make the difference.