na ecu in rt tt

[dfoster101]

wil my NA ecu work in a tt? thinking about picking up a tt for cheap but needs a new ecu will get one if i get the car but tight on cash as it is atm so saving on the ecu for a min would really help ... how much should it cost to rebuild the tt's ecu was quoted at 400 anyways thanks for the help in advance (both the same year cars or least both are 1st gens btw)

[BlackStealth]

No it won't work. Take a look on ebay for twin turbo ECUs.

[green-lantern]

It will plug in and it will probably start but you do NOT want to do that. It will not run right and will most likely screw something up. Like Blackstealth said find one on ebay or find one from a member. They go for about 250-300.

BTW I'f you can borrow one from a friend you might want to try it out before buying the car unless you are getting a killer deal.

[Mikes2nd]

400$ is too much to rebuild...

[j2k4]

I would get it to Seth PDQ.

[CoreyB]

Should be $250 to rebuild. $400 is high.

[Atrosity]

Yeah I would not do it at all....you are asking for trouble. LOL

[x2xtreme360]

This has been discussed so many times. Just buy a TT ECU for it. They are going for fairly cheap now.

If cash is so tight that you can't afford an ECU for the car, you might want to remember the money involved in dealing with the entire car.

[CoreyB]

I would like to know where these cheap 1st gen ECUs are everyone keeps talking about. Decided to put a 94 TT ECU in my 91 VR4. Looks like very few changes are needed to make it work.

[dfoster101]

thanks for the replies guys pretty much what i thought the case would be on it ... and money is a little tight right now but its anot always tight lol ... but i get hat your saying that if 400 bucks is gonna make or break me that i might not wanna take on owning it cause of cost of ownership on a tt but like i said the moneys not always this way for me, its just that the deal has come around at a time when it is tight and 400 is the differnce between enough gad to get it home or not... but dayumm it looks sweet as hell tho black turboed n beautiful !!
but anyways thanks a again for the replies guys

[Mean Green]

An N/A ecu will work in a turbo car...but I would not drive it as it will run lean. If you have a fuel controller to compensate it can work. Also the oem boost gauge, active exhaust, and a datalogger will not work or will not work properly.

edit: I had to use an N/A ecu to drive my car home roughly 50+/- miles when my old turbo ecu went bad.

[IPD]

you'll need an SAFC & a tune. or you can just go to autozone & spend practically the same amount of money on a rebuilt ECU & just call it a day.

seriously, no wonder so many 3/s's are junked with exploded engines. :rolleyes:

[Mean Green]

you'll need an SAFC & a tune. or you can just go to autozone & spend practically the same amount of money on a rebuilt ECU & just call it a day.

seriously, no wonder so many 3/s's are junked with exploded engines. :rolleyes:


I tried to get mine rebuilt at Autozone and they couldn't do it. The only option was an ecu rebuilder like Avpro.

[IPD]

I tried to get mine rebuilt at Autozone and they couldn't do it. The only option was an ecu rebuilder like Avpro.

i didn't rebuild one. i asked for one. they sold me a rebuilt one for <$300 including tax.

[Mean Green]

i didn't rebuild one. i asked for one. they sold me a rebuilt one for <$300 including tax.

When did you get one? I tried to get a 93 Fed Spec and the vendor was out of stock and they where not excepting cores for rebuild either. That was less than a month ago.

[CoreyB]

I dealt with NAPA and they needed to rebuild mine. I didnt want mine rebuilt I just wanted to buy one. Now I am going to modify my harness to run a 94 ECU. I plan to make a write up on it if it works out. My ECU seems to be the hardest to come by.

[Mean Green]

I dealt with NAPA and they needed to rebuild mine. I didnt want mine rebuilt I just wanted to buy one. Now I am going to modify my harness to run a 94 ECU. I plan to make a write up on it if it works out. My ECU seems to be the hardest to come by.

What year is yours?

[CoreyB]

91 VR4, Look at the pin outs for a manual and you will find many simularities exist between a 91 and 94 ECU. The three plugs for the 91 fit into 3 of the 4 on the 94. And are wired properly for the most part. That 4th plug on the 94 is mostly for autos and NAs. I know of one pin that is ignition power that needs to go to that fourth plug. I will look at it more closly before installing.

[IPD]

When did you get one? I tried to get a 93 Fed Spec and the vendor was out of stock and they where not excepting cores for rebuild either. That was less than a month ago.

i got mine back in january, iirc. 9966 iirc.

[Mean Green]

91 VR4, Look at the pin outs for a manual and you will find many simularities exist between a 91 and 94 ECU. The three plugs for the 91 fit into 3 of the 4 on the 94. And are wired properly for the most part. That 4th plug on the 94 is mostly for autos and NAs. I know of one pin that is ignition power that needs to go to that fourth plug. I will look at it more closly before installing.

You can find 9966 ecu's all day long. It's the 0663's and the 8205's that are damn near impossible to find. Those 2 where only made for 1 year.

[CoreyB]

Mine is the 9966, very hard to come by IMO.

[IPD]

well i'm sure someone could make an aftermarket ecu (and i know a certain someone who will never come on this forum because of his parochial tiff with alan...a someone who is making one) which would work for all years of 3/s. it's probably as simple as creating a universal plug, a flashable chipset, and programming for each FED-SPEC ecu. cali-spec needs nothing. use a fed-spec & plug the extra bung.

[CoreyB]

I know who you are talking abot. He has been beat to it though. Look up DIYPNP

[IPD]

didn't know pmp had one available already. or is it just in development? got a link NOT on 3si?

[CoreyB]

Check it out. Its the route I was going to take if I couldn't get a cheap replacement http://www.diyautotune.com/catalog/diypnp-c-75.html?osCsid=6501f2c632976259c1532041d40dfcaa Still might go with it in a few months. Looks like the dont have the startup maps for a 3000gt yet. Shouldnt be to hard to work with.

[IPD]

i'll be interested when it is TRULY plug & play...not just potentially capable of being thus.

[Mean Green]

DIY Autotune is 10 minutes from me...lol

[CoreyB]

Then why the fuck are you not there helping them develop maps ?