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99 Twin Turbo Build

Discussion in 'Personal Projects and Builds' started by william carter, Feb 6, 2015.

  1. toph6888

    toph6888 Active Member

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    When I had my single pump my AFR's would stay rich, however the fuel pump was maxed out in 3rd by 5000rpms and 4th by 4000rpms. My fuel pressure at the top of my redline (I would shift at 6k) was only 20psi pressure drop. The returnless will adjust how far it opens the inejctors to make sure the fuel stays rich, but at the cost of fuel pressure. No fuel pressure = poor atomization = down on power. My car pulls much better at high rpm with the dual 340lph pumps that are only at 70% duty cycle on my car now at the top of 3rd and 4th and the fuel pressure drop across injectors remiains 40 +/- 2psi.
     
  2. william carter

    william carter Member

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  3. william carter

    william carter Member

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    New time slip from today, fastest pass yet with a 10.49. Looks like the higher rev limit and 2 step did the trick
     
  4. fasterthanyou

    fasterthanyou Active Member

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    Damn! That's gotta be a ton of fun to drive
     
  5. william carter

    william carter Member

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    Yea definitely a lot of fun lol I wasn't expecting it to go that fast it was all over the track in 1st gear
     
  6. 6 Shooter

    6 Shooter Well-Known Member

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    Wow. Great time. That time is motivating me to get moving.
     
  7. JTsStang

    JTsStang Boosted V6

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    33mph out the back half is really good. If you had an auto I could see the car going 9.7's
     
  8. william carter

    william carter Member

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    I'm working on putting together a th350 for it now
     
  9. JTsStang

    JTsStang Boosted V6

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    How much boost were you running on that pass?
     
  10. william carter

    william carter Member

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    I've got a 6psi spring in the waste gates but it's spiking to about 18 according to my gauge. Not sure how accurate it is though just a cheap one
     
  11. JTsStang

    JTsStang Boosted V6

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    That's really good if its accurate. My car run 106mph in the 8th on 17psi and 35hp shot of nitrous.
     
  12. william carter

    william carter Member

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    uploadfromtaptalk1444423392938.jpg

    Just finished installing my new upr rear control arms last night. Hopefully they will help out my 60ft time some
     

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  13. JTsStang

    JTsStang Boosted V6

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    Awesome man! Get an arb on that thing while youre at it.
     
  14. V6procharged

    V6procharged Moderator Staff Member

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  15. william carter

    william carter Member

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    Thanks
     
  16. william carter

    william carter Member

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  17. JTsStang

    JTsStang Boosted V6

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    Awesome! How much boost and what fuel are you running? 93 octane?
     
  18. william carter

    william carter Member

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    19psi. Yea 93 octane with water/meth
     
  19. BRN2RUN

    BRN2RUN Active Member

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    Wow, that is amazing! That must feel great to crank up the boost and see it hold the power. I can only imagine what it would feel like to fire it up and see everything working properly and spooling up.
     
  20. 6 Shooter

    6 Shooter Well-Known Member

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    Well, can honestly say that one had better be headed in a straight line with no one in front of you when running that much boost. It is an unbelievable ride in a short time. Am trying to get by with 10 1/2" rims and Nitto street radials. Not had one straight blast off on the highway yet without slipping the tires and letting the rear get a bit out of line. Think my rear is now heading perfectly straight which will help.