How much boost will the 11's - 13's turbo efficiently produce? - Page 2
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This is a discussion on How much boost will the 11's - 13's turbo efficiently produce? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Originally Posted by rickyd13 sorry i quoted the wrong post i was talking about the grimmspeed Tumble Generator Valve (TGV) ...

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    Registered User Heide264's Avatar
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    Quote Originally Posted by rickyd13 View Post
    sorry i quoted the wrong post i was talking about the grimmspeed Tumble Generator Valve (TGV) Delete Service thats how they have it listed it was in donkeys link
    It varies with current horse power. If you are on a newer 2.5L, I've seen about 10hp across the power band. You'll need a tune or some way of disabling check engine codes to delete them.


    Quote Originally Posted by rickyd13 View Post
    but also gains on the pulley would be nice
    As stated, no direct horsepower gain. Lighter drive line.
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    thanks

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    Quote Originally Posted by Heide264 View Post
    It varies with current horse power. If you are on a newer 2.5L, I've seen about 10hp across the power band. You'll need a tune or some way of disabling check engine codes to delete them.
    You can remove the motors and plug them in, to "disable" the code, but I prefer to disable the code in the ECU itself.

    Quote Originally Posted by Heide264 View Post
    As stated, no direct horsepower gain. Lighter drive line.
    If there is any gain in usable power, I've not seen any evidence to support.
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    Moderator Donkey's Avatar
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    Lightened pulley works the same as a lightned flywheel. For every 1lb you remove from the crank it is like removing 10lbs from the weight of the vehicle. Off boost throttle response is pretty noticeable especially once the car is in motion. Faster rev's=faster powerband. I like them and they are easy to pick up used for $50-$60. Removing weight from a vehicle doesn't increase HP but is the car faster? Absolutely..........
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    Quote Originally Posted by rickyd13 View Post
    sorry i quoted the wrong post i was talking about the grimmspeed Tumble Generator Valve (TGV) Delete Service thats how they have it listed it was in donkeys link
    Their link has the expected gains listed in it I thought. Yes a tune to disable the codes at the least is needed as stated earlier.
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    I ran 23.5psi on 93 octane with my vf22. I could have turned it up a little more, but at 23.5psi the IWG was being forced open. Of course that was with a lot of other mods..

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    i saw that it said the gains but i meant are they noticeable?

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    Quote Originally Posted by rickyd13 View Post
    i saw that it said the gains but i meant are they noticeable?


    TGV deletes are well worth it, and you might as well throw in phenolic spacers while you have the manifold off.

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    thanks i also just posted a thread with a few questions if anyone can help sorry OP not trying to thread jack just curious

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    Quote Originally Posted by rickyd13 View Post
    i saw that it said the gains but i meant are they noticeable?
    Keep in mind, this mod requires basically removing the manifold. It's not really an "easy" mod, and there are some pretty good bang for your buck mods that you can do first.

    Otherwise, I haven't personally done the modification myself. I wouldn't expect a night and day difference to say the least.
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    thanks

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    Quote Originally Posted by Methodical4u
    headers are out of the question... to much trouble... just not happening.
    I'm lost on how a set of headers is "too much trouble"...

    I'll just leave this here:
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    Quote Originally Posted by Heide264 View Post
    I wouldn't expect a night and day difference to say the least.


    Yeah, it's not going to be a huge difference, but I still feel it's worth it. Since you have to remove the manifold, and obviously you're going to have to have the car professionally tuned to take advantage of the improved VE it's not something that is normally done just by itself.


    When I had my TGVs removed and ported I also port and polished my throttle body and intake manifold, as well as installing phenolic spacers and +1mm valves with a radiused valve job. The most noticeable difference was off boost drivability. Fuel economy went up probably 3-4mpg and the car was much easier to drive around town.

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    Quote Originally Posted by EJ257 View Post
    I'm lost on how a set of headers is "too much trouble"...


    lol... one of the easiest mods to do, too much trouble

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    Quote Originally Posted by lokey View Post
    yes, this would be nice, but it's 45 minutes in both directions for me to be able to get to it, so i've got to make it on 93 for a while.
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