goob8869

I recently sent my PCM in for a mail order tune after adding a cam, and after getting it back I now have no throttle response. Car cranks and idles fine but give it throttle and nothing. Could they have done this when they put the tune in for the cam because they are telling me there is nothing they do that would cause the throttle to not respond.

dw456post

What kind of car, engine, etc? Does it start and idle ok?

JakeFusion

iTrader: (7)

Sounds like it's lean. When you're lean in the 1200-1600 range, there is no throttle response. Add 2% fuel and it'll be fine. It's a balance between being lean enough for the cam to idle and operate correctly off-idle and being so lean, you lose throttle response.

goob8869

No I mean I have no throttle at all. It does crank and idle. It is like I have unplugged the pedal from the car. It is a 67 Camaro with a ctsv ls6

JakeFusion

iTrader: (7)

So it's a electronically controlled TB and not mechanical?

Check out a stock LS6 tune from HPTuners and compare to what you have. There may be a wonky setting somewhere in there.

Chevy406

iTrader: (12)

Yes, it most certainly could have been something they did with the tune. There is a table to enable/disable the ETC (electronic throttle).

khaotic

iTrader: (2)

sounds like it went into reduced engine mod, if you have a scanner see if you can pull a code Or clear codes restart car and see if no pedal condition still their

goob8869

Checked all connections, unplugged battery, and no codes