I have a 89 rs 305, that the previous owner heavily modded, its now a MAP tpi, no maf sensor. I read at iroc zone that the tps should be at .71 for map cars, is this true?? I put it at .54, it was at .46 before. Does it need to be .54 or .71, im confused.

 

I do not have a MAP car, but I would think that the TPS should be set the same for either. Set it at 0.62 to 0.64V, thats where I am running my MAF car.

 

Same here .62v

 

I'm running both my MAP and MAF at .55

 

TPS should always be between .5 and .6

im running .55 on my MAF, also check it at wide open throttle and make sure it reads close to 5 volts max. if it doesnt then u need a new TPS

 

does anyone of a pic of were to test it at?

 

I put it to .61, camaro racer, on the PS of the throttle body is the tps, its got two torx screws, you stick the black in "A" and red in "B"

 

thats one way, just use a code scanner, i used one and it reads the TPS voltage. u could do it that way if u want tho, its ont he passenger side of the TB, its black, 2 torx screws and be careful tighting them they are aluminum and u could snap them off or break the TPS.