I know there are a few owners of duratec R400s on here who've had the throttle body conversion done and I'm wondering if any of you reading have similar issues to mine, i.e. is this normal or is something wrong with my set up. Mine has always started first time and ticks over ok, albiet a bit unevenly. Once the oil is up to temp it will pull fairly cleanly (a lot better since the TBs were balanced by CC Mids at it's last service).
Problems start when it's warmed up, I stop and switch off and then start up again before it's cooled down. It'll start and run but as soon as I try to accelerate cue embarrasing missfires, kangarooing, inability to rev etc. I have to usually nurse it along in 1st gear for a minute or so before it clears and runs well enough to accelerate.
Any thoughts on this, especially from those with similar spec?