What ^ he said, did you have your rods checked, balanced, shot peened cryo'd, etc? If I were you I'd at least upgrade the bolts in the bottom end to ARP hardware. On stock fuel injectors 400 is the max I'd ever try to push it. Wideband is your friend.
I suggest you search. That's one of the most discussed subjects over here, and most of the time it is not the main problem. Take 10 seconds to do an advanced search on tps adjustment in the turbo tech section, READ the threads, you should be busy for the rest of the day now ;).
Try to steer away from taking weight out of the back of the supra. Most of the weight needs to be taken out of the front. And please, don't use this statement as an excuse to start ripping out EGR, charcoal canister, and other shit for the sake of weight savings. By taking out ALL of the A/c...
That's almost exactly how I'm wanting mine. I kinda dislike the whole, "look at the purdy aftermarket gauges on my car, arrest me now officer!" look ;).
I may consider changing my approach as far as turbos go in my supra. Depending on the issue you'll have with yours, I may go with this design rather than the older style off of ebay.
I like my cammed NA solstice ;), and my 911 turo, ligenfelter (sp?), all 3 of my MKIII's.... Shit, I like most of the cars I've got (won most of them).
I have to say the factory spec races are the toughest ones that I've tackled.
You don't need a profec e-01 if you go MAFT-Pro. It can convert to speed density tune according to a/f ratios, and even has it's own electronic boost controller, although if seems to be a chore to make it work correctly without spending tons of time tuning. (I'm refering to the boost controller...
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