Results 1 to 5 of 5

Twin Turbo Tunning Problomes

This is a discussion on Twin Turbo Tunning Problomes within the Forced Induction forums, part of the LSx Technical Help Section category; I work for Maverick Motorsports, (sandmaverick.com) we just built a twin turbo LS2; we also just purchased HP tuners software. ...

  1. #1
    www.sandmaverick.com
    Join Date
    Feb 2006
    Location
    Safford
    Posts
    15

    All Colors
    Sand Maverick Sand Cars

    Question Twin Turbo Tunning Problomes

    I work for Maverick Motorsports, (sandmaverick.com) we just built a twin turbo LS2; we also just purchased HP tuners software. The problem is this: Whenever you just put it to the floor, or even ease into the throttle to fast, it blows the blow off valve off and the waste gates, then looses all boost, and falls on its face because of all of the extra fuel. If you have any possible verdict as to why this is happening, it would be greatly appreciated!

  2. #2
    Member
    Join Date
    Dec 2005
    Location
    Somewhere in Colorado
    Age
    42
    Posts
    922

    Hugger Orange
    1999 Camaro SS

    Umm. Does not sound like a tuning problem to me, keep the wastgates closed and the boost up.. Kidding. What PSI are you trying to stay at?

    Is the Wasegate blowing off air the MAF has read? If so there's 1 of your problems, I'm sure there are many other factors...

    Need more info.

    CLint

  3. #3
    b00sted
    Guest
    It sounds like the BOV isn't setup right for one. It should be a single vaccum line going from the intake manifold to the bov...The only time it should open is when the throttle body closes, and there is a higher pressure in the piping than there is in the intake manifold. It shouldn't open when it hits boost.

    The waste gate will open if it thinks it's getting the amount of boost the spring is set for(unless you bleed the boost line so it stays shut longer). That should be a single line going from the compressor housing to the WG actuator, with a tee in it if you have a boost controller.

    Hugger...If his wastegate is blowing off any air from any part of the intake setup, there is something SERIOUSLY wrong with the turbo setup. Wastegate bypasses exhaust from before the turbo and dumps it into the downpipe so the turbo stays at that RPM and boost level.

  4. #4
    www.sandmaverick.com
    Join Date
    Feb 2006
    Location
    Safford
    Posts
    15

    All Colors
    Sand Maverick Sand Cars

    well we finnaly messed with timming and fuel, related to the MAP, and got it atleast running to some what, now are problome is in the 4L80E auto trannsmission, and the 7 lb springs in the waste gate are letting boost rise to 10 lbs.

  5. #5
    Junior Member
    Join Date
    Mar 2006
    Location
    Albuquerque, NM
    Posts
    9

    white
    2000 Z28

    What size turbos/gates??? If the turbos/gates are too small then you will have boost creep. The ls2 motor will flow a lot of cfm.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 2
    Last Post: 10-16-2009, 01:45 AM
  2. Tunning LS1 turbo applications in new jersey
    By spooled88monte in forum Computer & Tuning
    Replies: 5
    Last Post: 02-12-2008, 11:23 AM
  3. turbo tunning problems help please!
    By towbars in forum Domestics and Foreigns
    Replies: 2
    Last Post: 08-31-2006, 04:30 PM
  4. Replies: 45
    Last Post: 06-14-2006, 06:49 PM
  5. Replies: 14
    Last Post: 12-28-2005, 08:00 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •