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How difficult is it to install a LSX FAST 90mm Intake?

This is a discussion on How difficult is it to install a LSX FAST 90mm Intake? within the General Help forums, part of the LSx Technical Help Section category; Buying the FAST intake manifold and was thinking of doing the install myself and was just curious if anyone else ...

  1. #1
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    Exclamation How difficult is it to install a LSX FAST 90mm Intake?

    Buying the FAST intake manifold and was thinking of doing the install myself and was just curious if anyone else did the manifold install them self how long did it take??

    Is it worth doing it your self or spending the $300 to have it installed for you?

    Does anyone have any step by step instructions to doing it yourself with picts?

  2. #2
    Grand Imperial Wizard Sarge's Avatar
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    Hey man...walk in the park.....well on the GTO anyway.....fairly straightforward.....
    http://www.solent-renegades.co.uk/ca...ntake_Manifold
    I think there is something at installuniversity...I'll go look for you...

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    Thanks Sarge i appriciate it!!!

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    How was the gain on the manifold?? Noticable??

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    And also does the car need to be tuned after the manifold/90mm TB install or can you just drive away after your done??

  6. #6
    Snake Eater
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    perhaps a noticeable gain, but nothing "huge."

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    Senior Member SeVeReDiStOrTiOn's Avatar
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    try porting your current TB...since you already have a ls6 manifold the gains won't be noticeable unless your going for big power....my .02

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    No 55mph 1QuikWS6's Avatar
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    If you go with a set of AFR 205's milled .030, with Comp XER cam, either 36# or 42# injectors, aftermarket fuel rails, Walbro pump, larger MAF, appropriate 'fine tuning', LT's, no cats, good catback, and the Fast 90/NW90 combo; the gains will be impressive - in the upper 400 range for both RWHP/RWTQ.

    On a basically otherwise stock car I agree with the others that the LS6 intake is fine and the gains you see from a 90/90 combo is not worth the cost.

    If you're willing to ante up all the $$ for a setup similar to what I mentioned above, then get in touch with Tony @ AFR and he can help you with the setup/parts selection. Every car that has followed his recipe to the last detail has dynoed in the upper 400 RWHP/RWTQ range.

    -Jay-

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    HMMM Sounds like a very nice setup.. High RWHP i like i think i might look into it and about that comp cam i never heard of it.. Do you know the specs on the cam??

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    Ok so i have the LS6 manifold (02 WS6) and if i decide to buy the FAST manifold with the 90mm Throttle how much power could i be expecting over my stock WS6 manifold and throttle??

    And is it worth it??

  11. #11
    BlackHawk T/A
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    No

    Not unless you do heads and cam. Your engine will then be trying to pull in a lot more air justifying your LSX. Right now it does not.

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    Senior Member SeVeReDiStOrTiOn's Avatar
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    Quote Originally Posted by BlackHawk T/A
    No

    Not unless you do heads and cam. Your engine will then be trying to pull in a lot more air justifying your LSX. Right now it does not.

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    I am doing heads and cam but in march i'll be doing them so i guess i should just wait till i put them in then i'll buy the LSX intake and TB....

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