New 1994 Twin Turbo Auto Trans, So Where to Start

[pwpanas]

Originally Posted by consol1

I am looking for threads or advice from knowledgeable members of this form. I just purchased 1994 twin turbo from it's original owner. I want to know what mods I should start with…

http://mkiv.com/93-98-twin-turbo-faqs-2/#bpu1

Originally Posted by consol1

1. As much WHP that can be produced on Supreme Fuel…

What is “Supreme Fuel”? If that’s pump gas, then you need to reconsider this criteria OR forget the idea of getting a Supra. A Supra only *really* performs with high boost from the turbo(s)…and high boost on pump gas detonates. You need to consider methanol injection or race fuel if you want to experience the true performance capabilities of a 3L turbocharged engine.

Originally Posted by consol1

…2. As much WHP that is still useable and still dependable…

Sorry that’s a catch-22. The more hp you squeeze out of it, the less reliable it will be. You have to decide on your pain threshold and what you’re willing to give up for more hp.

Originally Posted by consol1

…Don't think about cost. I am not interested in money or cost here. I am interested in what works. In my experience people who chose a cheeper solution (because they are concerned about cost) are never truly satisfied nor does the solution work in the long run. That is not me.

Ok.

Originally Posted by consol1

I don't want people to advise me on what they have read or think would be cool. What they have seen in a mag or at a car show. I want to know from those who own, have done, and have learned what works... Please! You are the best source!!!!! You knowledge is the most valuable. …

I’m the owner of a heavily modified Toyota Supra Turbo and I’ve done (and re-done, and re-done) most of the work on it myself.

As I linked to above, you can either start with “BPU”, which is a good, proven set of mods. You can spend a lot of time tweaking BPU to get incremental performance improvements, but your next jump won’t be till you dump the oem twins and the oem fuel injectors and install a mid-size (~67mm) single turbo. However, there’s a big jump in cost with this step because you need a fuel system, a turbo kit, and some electronics to control it all. I can get you pointed in the right direction if you post up your thoughts on not using “Supreme Fuel” (whatever that is), and whether you think you want to make the jump straight to single turbo or if you want to try out BPU.

P.S. Agreed – I hope you did a compression test on that Supra you bought.

Here's a vid on doing a leakdown test (sorry about the ad):
http://www.youtube.com/watch?v=WgrfT0LFMhc
(it gets interesting at about the 7 minute mark for compression test, and about 13 minute mark for the leakdown)

Here's another vid (a bit more concise):
http://www.youtube.com/watch?v=ofSiT...feature=fvwrel