Originally Posted by astro

I've been reading this post with interest as my car does the same thing. If I try and keep steady throttle at 2-3k RPM it surges. In 1st, it's quite bad coz I guess there isn't much momentum in the drivetrain to smooth things out, and as you go up gears, it gets better and better to feel pretty much nothing in 4-6th.

Biggest pain in the arse is in 1st when trying to go slow in traffic, or cruising at 50-60kms. I have to keep coming on and off throttle slightly to keep a constant speed (which is kinda fun anyway).

I've just had a total rebuild and it's still doing it, though I've yet to get a retune as I'm stilling running in, so I'll let you know what happens after the tune (which won't be until after Targa West)

Originally Posted by trusti rex

steady throttle at 2-3k rpm would be in closed loop mode of the factory ecu which wouldnt change with an aftermarket tune anyway would it??