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Urgent!! HELP!! Greddy Plenum for R33 GTST..

sidewaymambo
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sidewaymambo Mentor

sidewaymambo

Posted
Posted

Hi, Guys

Some questions rising during my modification; I have Greddy Plenum with Q45 (infinite) throttle body and discover that I no longer able to use my stock throttle cable (cable is longer), and the throttle position sensor harness is different (alougth both 3 wires), so question are:

1) What throttle cable did you guys use?

2) How you wire up Q45 throttle position sensor to stock throttle position harness?

3) If you still have the Greddy plenum manual, what does it talk about on the 3-12 (page 20)..

all help appreciate...

Phillip

GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted

Adzman, I replied to your question in the other thread:D

sidewaymambo, I originally had the stock throttle body with an adapter plate, and we were able to use the stock throttle cable and TPS. I later had a custom throttle body (90mm) made, and we were still able to retain the stock throttle cabel, and used a TPS from a Holden, which we got from Conventrys, as it had the same pin arrangement.

After a while we had a custom throttle cable made, as the stock one was starting to catch as it was at an odd angle. You can have a custom cable made to any size you like.

I would imagine that the TPS on the Q45 would be very similar, with two wires acting as a potentiometer and one acting as the stop switch.

Hope that helps.

Paul

GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted

Yeah, sorry. The TPS is like a potentiometer, it varies the voltage signal out depending on how open the throttle is. Aslong as the signal range is the same then you should be able to tune the car with the larger throttle body no probs:D

B-Man Grand Master

B-Man

Posted
Posted

And the TPS feeds back to the ECU right ? What happens to the output of this ?

Does the TPS output combine with the AFM output for the ECU to make decisions ? Is this ECU dependant or is the TPS & AFM outputs independant ?

I don't know if that quesiton made much sense.....? I hope you understand what I mean ?

Steve Grand Master

Steve

Posted
Posted

sidewaymambo,

I am having my TB replaced with a ford item, it has a two position sensor (on/off) and the guy who is fitting it said it is quite easy to adapt the stock TPS to the ford TB

Also, I am using a GTiR throttle cable that fits quite nicely, also you can get the stock ones shortened so I am told.

sidewaymambo Mentor

sidewaymambo

Posted
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Posted
Originally posted by DoughBoy

A Silvia or 180SX throttle cable fits. A GT-R has the same connectors to suit the Q45 throttle body, and have never seen the manual so can't help on the 3rd quiz.

Hi, DoughBoy..

silvis or 180sx, did you refer to the SR20DET or CA18DET? thanks

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