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Originally Posted by onesicsupra
i blew my old motor and the new one does not boost when it is only in sequential mode because my water pump went out a while ago and fried the vsv's, but befor my water pump went out it ran fine. the guy i bought the motor from went to japan himself and they rarly sell the 2jz with the 6 speed he said he could get the five speed turbo for me because it is best for drifting and that is what i enjoy doing...
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Honestly I think he is/was stringing you along. As far as I know the 5spd was never offered with the 2jz-g
Te in the Mkiv Supra (aka jza80) because it doesn't handle the power as well. PLEASE make him prove me wrong here...I'd rather be wrong about this than have you stuck with a covertly-swapped tranny from an n/a Supra or Aristo... Oh and why on earth would he say the 6spd isn't as good for drifting? Imho, that doesn't make any sense at all either.
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Originally Posted by onesicsupra
...as of mods currently installed on my car i have, a greddy turbo timer, greddy blitz fmic, 3.5 inch greddy trust exaust, it had an hks boost controller but it was broken when i bought the car (you couldn't read the screen), and im still running the u.s. ecu. sorry if ive been kinda annoying lol, but im pretty new with supras thanks for all ur help
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Not annoying at all...just trying to help you get to the bottom of the problem with your Supra.
It may pain you to hear that I'm going to suggest you go back to the drawing board here. Using true-twin mode as a band-aid to cover up faulty electronic components/wiring is a recipe for disaster, imo. I have to suggest that you not only get your oem sequential VSVs working, you also need to troubleshoot all of the wiring & other electrical components in the area where your water pump blew. For example, your crank position sensor wiring is also in that same location!!! Although I don't know for sure your Supra's popping/leanness issue is related to a wiring issue in the area of your water pump, that my best guess at this point in time is that it very well could be related. At the very least, getting those vsvs working again would allow us to test whether or not the popping problem also happens in sequential mode, right? Lastly, I'm sure you'd admit that you would rather your oem sequential VSVs were working perfectly, and if you decide to you can go to true-twin by choice rather than by necessity.
Oh, one last thought: how many miles are on your coilpacks?