SR20DET TB Modification to replace CA18DET TB

ChemCool · Post by **ChemCool** » Thu May 08, 2008 12:56 pm

Yes, the diffs is about 5mm's.
Ok, Gary, I understand the boost situation. All I can say is that I basically have T28 now, or is it the t25g??/? Some more boost available, and no fmic, less lag, straight into the tb. But it was not a shlep to do the mod. It is done. it is there and that is it. Need to dyno.
Chem

Gary57 · Post by **Gary57** » Thu May 08, 2008 1:53 pm

Thats it Chem, I would do it for the experiment if nothing else.

Would be nice if someone could dyno a car then do this mod,redyno to check if their are any gains.

I will do this mod if I can come up with a TB for a good price.

mario_200sx · Post by **mario_200sx** » Thu May 08, 2008 2:49 pm

Well, I will do this. Just need the throttle body!

Doctor G · Post by **Doctor G** » Thu May 08, 2008 9:05 pm

Okay so after some research it seems the CA TPS has a voltage between approximately 0.5V and 4.0V+ between idle and WOT.

This compares to a SR20DE TPS just fine.

However, when I went to check the actual TPS voltage on the CA I could not get any reading. I usually measure the TPS voltage on the SR by sticking the multimeter prongs into the back of the TPS plug wires.

On the CA TPS there are 3 prongs on the TPS, but only two female receptors on the TPS plug. Is that correct? I couldn't get a TPS reading measuring no matter which way around I used them multimeter.

Does anyone know how else to test the TPS voltage aside from measuring it at the ECU pins?

veecee · Post by **veecee** » Thu May 08, 2008 9:56 pm

ya ya you clowns.

the black connector on the TPS is just the idle switch!!! you can measure this on the ohm (resistance) setting on a multimeter!

the grey 6 pin connector zip-tied to the water pipe below the TPS, and connected to the TPS via a small wiring harness (covered in black protective sheathing), is the actual throttle position sensor.

that should give you readings!

FSM shows all this stuff guys!