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Discussion Starter #1
does anyone no iff I can run a series 2 ecu in my series 1 gtst?,
I know coils are different but im lead to believe it doesn't effect ecu igniter series 1 and series 2 has igniters in each coil is this correct?,
afm is different 4 wire (grenn sticker) series 1 and 3 wire (pink Sticker) series 2, but yet again am lead to believe the difference in the loom not the ecu,
tps 2 plug series 1 and 1 plug series 2, have conflicting info on the 2 plug some people say that the auto has a 2 plug tps?,
but myne is manual 1st nz owner very low ks and has 2 plug tps, so im unsure.
what is written on the tag to show manual or auto?
any help confirming any of these questions much appreciated
 

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Discussion Starter #2
just to confirm the manual and auto series 2 ecu works fine in my series one without changing anything
 

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I have a automatic RB25DE, S2 in my r33. It has 2 plugs on the TPS.

RB25DE/T Series 1 has just 1 plug on TPS. Series 2 has 2 plugs on TPS.(Manual or Auto)

I currently have an RB25DE S1 ECU in my R33, which has a RB25DE S2 engine. Everything still works perfectly('P','R','N',etc all works). Although in 'D' in starts in gear 2 only, so it takes an awfully long time to launch while using 'D'. So instead I use the '1' and '2' gears to drive and then eventually put it into 'D' so it drives smoothly.

I believe it's because I have a S1 ECU, instead of an S2.

and also im using the stock diff, Open diff, 4:1 ratio

My R33 use to have an RB20E engine.

Hope that helps
 
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