Quote:
Originally Posted by BSAS3000GT
Hey Mr.3000GT i saw you are using a 92 TT ECU on your 95 FED Spec NA. I also have a 95 fed spec na and i already did the conversion, but im interested on getting a TT ecu right now to make
tuning easier. What do you nned to do to install your 92 TT ECU and harness? i may buy a 91 ECU with harness. If you could tell me what is involved i would really appreciate it.
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Well you are gonna need a Derale fan controller like the thread is talking about. You are gonna need a 91-93 Fed Spec TT ECU, a TT Front O2 sensor, extend your stock rear O2 sensor and tap into the 55-56 lines for your O2 sensors. Here is all the info I gathered:
How to connect a 1st Gen TT ECU to my 95 Fed Spec Harness:
1. As others have said, extend the rear O2, wire in a front O2, wire in a OBDI port for datalogging,; and you also have to add resistors to your injector harness, and do fan controller. The Derale one works great, $39 from Summit.
2. basicly the only thing you'll have to do is tap into the 55-56 lines for tt o2 sensors when puting a 93tt ecu into your car and rewire the radiator fan.......funny thing about that. i didn't rewire my radiator fan, and the first time i drove it i almost over heated it when i was showing it to a friend and letting it just sit there. didn't take long to figure something wasn't right....
Front O2 pin 55
Rear O2 pin 56
1st gen TT FED SPEC ECU with my '95 N/A harness.
At the O2 sensor:
Blue - Signal
white - ground
black - heater
black - heater
At the O2 connector
White - signal
black - ground
red - heater
black - heater
At the ECU
black - signal
green w/blue - ground
green - heater
black w/blue - heater
I hope this helps....