I need a little help and will try to consolidate the information.

The car is a ported single turbo, 35/74, 550/1600 with supporting, intake, exhaust, intercooler mods. It has been running great on a base map from Chuck's 35R setup that had been modified per ARGHX's recommended setting for tip in (reference https://www.rx7club.com/showthread.p...arghx+settings). Tip-in, reving, idle and most aspects of driving were fine.

The problem WAS, that the constant throttle resulted in some bucking so I assumed the TPS needed adjusting. When I started, both TPS voltages read 4.9V and change. Neither moved when I moved the throttle so I replaced the sensor with another one. The new sensor I was able to get into the appropriate ranges for both V1 and V2.

Now the problem IS that when I started the car, it idled horribly and would barely rev. It seemed similar to issues when I first got the car running and the tip in wasn't quite right, so I verified my setting were as I thought they were. The car seems to be running MUCH leaner now than it was (based on wideband), but I don't think I changed anything else.

So, if the OLD TPS was always reading 4.9xxV for V1 and V2, the new one is working as expected, so how is it that I was able to drive the car before and now it barely runs.

I assumed that maybe a correction map was pegged based on the 4.9 reading at all throttle positions, or maybe the car was limping and I didn't know it? Any thoughts are much appreciated.

Unfortunately, this car is my daily and driving it tomorrow is going to be PITA based on the way it is currently running.

 

Nevermind. Somehow the fuel map on the car got corrupted and I missed that. When I uploaded my map a second time it took and worked fine. Random sequence of events on my part must have fouled it up.