R33 Gtr Ecu Into R34 Gtr

[aphid]

Hey guys,

Which wires have to be swapped so an r33 ecu will work in a 34? I believe it's something to do with the CAS.. Looking over the wiring diaram there are 4 wires from the CAS to the ECU which are on wires:

41: 120deg Input

42: 1deg Input

51: 120deg Input

52: 1deg Input

If anybody has a diagram or any hot tips it would be very much appreciated =)

Cheers!

[STATUS]

From memory it was only cas wires, you could try just swap 41 and 51 then swap 42 and 52. I have lost my wiring bible as my 2nd tuning laptop's hard drive failed.

[aphid]

aww to lappy hdd death

swapping 41 & 51, 42 & 52 doesn't work arrgghhh.. The reason I'm putting the 33 ecu in there is to try and bypass the NATS (Nissan Anti Theft System) so I can drive it to nissan to get my key tuned in

I'm guessing the immobiliser also cuts power to the 2nd ECCS relay, the one that powers the injectors as when I turn the CAS the injectors arn't firing

The funny thing is although the r34 power fc does the same thing as the r33 standard ecu in not firing the injectors, the standard r34 gtr ecu fires the injectors, but the pulse is so tiny pretty much no fuel comes out

if anybody else has any ideas please share =)

Cheers!

From memory it was only cas wires, you could try just swap 41 and 51 then swap 42 and 52. I have lost my wiring bible as my 2nd tuning laptop's hard drive failed.

[Swiper the Fox]

aww to lappy hdd death

swapping 41 & 51, 42 & 52 doesn't work arrgghhh.. The reason I'm putting the 33 ecu in there is to try and bypass the NATS (Nissan Anti Theft System) so I can drive it to nissan to get my key tuned in

I'm guessing the immobiliser also cuts power to the 2nd ECCS relay, the one that powers the injectors as when I turn the CAS the injectors arn't firing

The funny thing is although the r34 power fc does the same thing as the r33 standard ecu in not firing the injectors, the standard r34 gtr ecu fires the injectors, but the pulse is so tiny pretty much no fuel comes out

if anybody else has any ideas please share =)

Cheers!

the Vi-PEC ecu has 4 dip switches...they swap trigger 1 and 2 over...swap 41 and 51 and 42 and 52 and see if that fires her up.

[Don Dada]

I was checkin this out a while ago and there are a few other things that need to be done.

Here's the R34 gtr manual

Pat attention to pin 8, 104, 106, 54, 56, 41, 42, 51, 52.

note there is only one pin(41) for the 1* signal on the R34 ECU.... pin 51 is blank

http://www.scribd.com/doc/5030134/Nissan-R...nual-Supplement

[STATUS]

the Vi-PEC ecu has 4 dip switches...they swap trigger 1 and 2 over...swap 41 and 51 and 42 and 52 and see if that fires her up.

yeah i reckon that would do it, i was'nt sure of the combination.

[aphid]

thanks for the info guys, very much appreciated.. Also smell, that r34 engine manual supplement is fkn gold !!