TT conversion ?
quackmandude
07-30-2006, 04:33 AM
hey yall i got a 94 sl right. i found a 93 TT at a salvage yard, amazing it runs, it wreked in the back tho, but it runs so whatever, ima get the TT from it, prolly just take the entire car. umm will i run into promblems?? its a 1st generation, obviously, i just dont no what to expect, well hit me up, thanks
VR43000GT
07-30-2006, 11:20 AM
I believe the wiring is different between the 1st and 2nd gen 6G72. You can make it work but I believe you will have to do a little modification work on your wiring. But then agian you would anyway since its a TT.
Igovert500
07-30-2006, 03:11 PM
You'll run into wiring issues when/if you try to use the 93 ecu. Which may turn out to be a real PITA. I mean the wiring harnesses are completely different, and that will only add to the complexity. Can't really think of anything off the top of my head other than that. Basically I don't forsee any problems, just wire harness headaches.
Linebckr49
07-30-2006, 07:10 PM
send a PM to Zeiss. he recently completed the TT conversion and could answer any questions you have.
but you have the right idea to go about it. its cheapest if you just find a wrecked TT car for cheap, buy the whole car, then use it as a parts car.
however, as the guys said, wiring harness is a big issue. basically, you want a TT ECU and wiring harness. this is b/c our NA engine is a high compression 10:1 motor. when introducing boost, you run into problems with tuning b/c our NA ECUs don't have much of a concept of timing. the TT ECU can better monitor timing (and pull timing if needed), and you can more easily tune with the TT ECU.
but you have the right idea to go about it. its cheapest if you just find a wrecked TT car for cheap, buy the whole car, then use it as a parts car.
however, as the guys said, wiring harness is a big issue. basically, you want a TT ECU and wiring harness. this is b/c our NA engine is a high compression 10:1 motor. when introducing boost, you run into problems with tuning b/c our NA ECUs don't have much of a concept of timing. the TT ECU can better monitor timing (and pull timing if needed), and you can more easily tune with the TT ECU.
VR43000GT
07-30-2006, 08:53 PM
Not to highjack, but can you plug a DOHC n/a ECU into a VR4 motor?
Linebckr49
07-30-2006, 10:53 PM
Not to highjack, but can you plug a DOHC n/a ECU into a VR4 motor?
you mean will a dohc na ECU fit into a TT wiring harness? good question. i think it would, but there are a lot of TT sensors in the harness that wouldn't be used in the ECU, so it wouldn't seem worth it.
you mean will a dohc na ECU fit into a TT wiring harness? good question. i think it would, but there are a lot of TT sensors in the harness that wouldn't be used in the ECU, so it wouldn't seem worth it.
Stealthee
07-30-2006, 11:01 PM
YOu can run a TT engine on a NA ECU and SAFC for fuel correction, BUT you will not get the same power as you would with a TT ECU. It has been dyno tested to show as much as a 50 whp difference.
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