I'm trying to sort out a car right now. SBF with a procharger and a FAST XFI on it. We inherited this problem so we've been chasing gremlins and think we have it close just have one lingering issue. The TPS singnal is very un stable. We checked the car without it running anf turn the throttle blade and it reads 91% wot. Then we start the car and put it on the transbrake and when its on the floor the tps isgnal is all over the place from 60-90%, it looks like a heart monitor. The most troubling part is that its intermittent. The owner emailed me 9 datalogs from his house and it worked fun, then we get to the track and its fuckign up again. We'll work on it in the pits get it good then go up to the line and it happens again. Its getting irritating. So far we have checked grounds, replaced the tps,moved the msd and all other ept to avoid intereferance, and checked the harness and pin as much as we could. Anyone have any thoughts?