Well I know this is probably just a disadvantage of the limited plunger type of TPS sensor we use but is there any way to get around this? When i push the pedal down half way the s-afc says 100%

 

no. the 87-88 turbo will max out the S-afc at 30% throttle. you just have to put the min at 97% and max at 98 or so.

 

If you wanted to, you could get the whole 89-91 t II throttle body, but that would probably not be worth the hassle. I have mine set at 99% for HI throttle, and I would probably set the low at around 75.

 

i have the 89-91 throttle body and tps sensor, but the tps sensor wont work with the rest of the s4 ecu ;P

 

you just run the part throttle TPS to the S4 ecu. it's the same for both. then just run the full throttle tps to the AFC.

 

can i get a lil more explanatin?

 

the serious 5 had two sensors, full and half or something along those lines, he's saying hook up the series 4 ecu on the half, and then hook up the S-AFC on the full range sensor, should solve your problem. I think that's what he meant anyway