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Thread: Need some help to drifter from Russia with LS2 engine

  1. #1
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    Need some help to drifter from Russia with LS2 engine

    Hi guys, my name is Ivan I'm from Moscow.
    We have very little experience with LS2 engine series in Russia, so I hope for your help, there are several problems that we can not solve for quite some time, so speak to you.

    Car - Nissan silvia with LS2 06 GTO engine prepared for drifting. LS is almost stock.
    The main problem - with the rev limiter. When i going sideway in third gear for example, and the revs near the redline, engine starts to lose power critically. Its not like on other cars when arow on tacho beats the redline and engine like WROOOMROOMROOMROOMROOM and you going sideway on full throttle (like on JZ, RB or SR and other engines). On my LS its like TRAAATATATTA but power is going low and car straightens.

    We thought it was the clutch slips and because of this lost power. But it seems to be a new ...

    Please help with some advises or opinions, i'll be very appreciated

    Here some videos about the car (its on Russian but still)
    https://vimeo.com/64076132
    http://www.youtube.com/watch?v=JDVZKgD6SUU
    and photos
    http://cs417619.vk.me/v417619299/474b/N-j0-C5Qys8.jpg
    http://cs322830.vk.me/v322830689/12e9/YKHFtmAa0lo.jpg
    http://cs322830.vk.me/v322830689/12d7/KhOubfaBaHE.jpg

  2. #2
    Difficult without a log or tune, but try disabling ETC (throttle blade) as a control for rpm limit and enable (if not already) spark and fuel cut as your rpm limiters. Im not sure that's the best way for extended periods of rpm limiting for longevity though, although I've seen it be successful in other forms of motorsport I've tuned where its cable throttle only.

  3. #3
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    How good is the fuel system ? Are you sure you are not suffering from fuel starvation while drifting ?

  4. #4
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    Quote Originally Posted by SSUte01 View Post
    Difficult without a log or tune, but try disabling ETC (throttle blade) as a control for rpm limit and enable (if not already) spark and fuel cut as your rpm limiters. Im not sure that's the best way for extended periods of rpm limiting for longevity though, although I've seen it be successful in other forms of motorsport I've tuned where its cable throttle only.
    Oh thanx alot? Ill try!

  5. #5
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    Quote Originally Posted by JVK View Post
    How good is the fuel system ? Are you sure you are not suffering from fuel starvation while drifting ?
    Hmmm thats the question.. Walbro 255lph fuel pump and fat fuel rails with tomei fuel regulator... but still walbro is not the best fuel pump. Thanks

  6. #6
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    Do I understand correctly that the
    behavior described by me is regular for stock LS2 or its not?

  7. #7
    can you post up the tune file and a log? that would be optimum for helping you.

    Are you sure all tq management is turned off? set your rev limit to spark cut and take off the fuel cut and etc cut so it doesn't go lean from constantly hitting the limiter.

  8. #8
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    Quote Originally Posted by xrelapse13 View Post
    can you post up the tune file and a log? that would be optimum for helping you.

    Are you sure all tq management is turned off? set your rev limit to spark cut and take off the fuel cut and etc cut so it doesn't go lean from constantly hitting the limiter.

    Dear xrelapse13, can you help me to figure out where exactly in the HP tuners soft look for those parameters that you talked about.

  9. #9
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    post .hpt tune file
    post .hpl log file of this happening