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  1. MK3Brent

    New dyno results: (627hp / 574tq) GT4088

    The weak link in my IC pipes are that they're not bead rolled and my one motor mount shot. When the engine torques up, the pipes separate. All is being fixed as soon as I can. Thanks Dave! I'm still looking forward to seeing your results with your transmission.
  2. MK3Brent

    need turbo suggestions

    Sound Performance still makes them too, I believe. SP61GT's, etc.
  3. MK3Brent

    New dyno results: (627hp / 574tq) GT4088

    I pay $9 per gallon 116 octane, that's not that much considering. No head work, stock cams.
  4. MK3Brent

    New dyno results: (627hp / 574tq) GT4088

    What's with everyone and the pump gas...? I dyno'd 564hp before with 21.5psi. Sorry I don't have a boost log. :( Thanks for all the kind comments. I guess next is spray. :dunno: Still really want a TH350. :rofl:
  5. MK3Brent

    New dyno results: (627hp / 574tq) GT4088

    This engine has never seen pump gas. You must drive with either a drag radial or slick. I drive on MT ET streets. Anything else is just useless. Thank-ya.
  6. MK3Brent

    need turbo suggestions

    CT upgrades don't have a proportional relationship with respect to compressor wheel and shaft dimensions. With thrust loads, these shafts are more likely to "move" or otherwise distort causing premature bearing/seal damage or even catastrophic breakage. This condition increases exponentially...
  7. MK3Brent

    New dyno results: (627hp / 574tq) GT4088

    It was always time for a real ECU... :rofl: Thanks!
  8. MK3Brent

    New dyno results: (627hp / 574tq) GT4088

    GT4088, right off the shelf with a precision .83AR turbine housing.
  9. MK3Brent

    New dyno results: (627hp / 574tq) GT4088

    Built engine. SSAutocrome manifold, modified for TiAL F38 W/G, and a turbo riser. 2.5" IC pipes Spearco bar and plate IC TiAL 50mm BOV Sethron FFIM VPC, AFC, EVC. 2x Walbro 255 pumps 680cc Precision injectors LIPP fuel rail (dual feed) Aeromotive AFPR MSD DIS4 Gauges and stuff. Probably about it.
  10. MK3Brent

    New dyno results: (627hp / 574tq) GT4088

    Finally... Finally I got the time to strap down to the dyno and spend the time needed to get the car running "decent" air fuels. Ever since adding the 2nd fuel pump, it's been a little bit of a handful trying not to correct too much with the piggybacks+AFPR. At the end of the day, I feel...
  11. MK3Brent

    Need help w/ 50MM Ebay Wastegate

    I ran one for a while, and it was just the most piece of junk. Good luck with it.
  12. MK3Brent

    Need help w/ 50MM Ebay Wastegate

    Just run a pressure line to the side port and leave the top open. A word of advice: Throw that w/g in the garbage and get something worth your time, because these aren't.
  13. MK3Brent

    need turbo suggestions

    35R... be done with it.
  14. MK3Brent

    Don't buy cheap brake pads!!!

    My porterfield R4's are silent as well. I sprayed the backs with brake-quiet, and used the springs. They only squeek for .5 seconds when you hit the brakes for the first time after sitting for a month or so. Cheap pads squeek badly mainly because they're an extremely hard...
  15. MK3Brent

    What plug gap for 25+PSI?

    Yeah, I plan on doing something similar to what others have done with the small shock absorber between the strut tower and the head + a lower brace. I wish those pipes stayed on, my powerband was going straight up. :rofl:
  16. MK3Brent

    What plug gap for 25+PSI?

    All runs were at 27psi, but couldn't reach it and would blow at 20ish. No nitrous. Time to re-brace like IJ showed, plus new IC pipes and even a new throttle body.