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Fast 90mm Intake

This is a discussion on Fast 90mm Intake within the External Engine forums, part of the LSx Technical Help Section category; what will be the best Setup with a 90mm Fast Intake Mainfold? i was think a 85m SLP and Ported ...

  1. #1
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    Fast 90mm Intake

    what will be the best Setup with a 90mm Fast Intake Mainfold?
    i was think a 85m SLP and Ported 85mm TB

  2. #2
    Senior Member tatertot91's Avatar
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    SLP MAFS are crap if thats what you mean, and look for a PTM or Nick Williams (NW) Throttle Body

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    Member WS6SP33D's Avatar
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    Quote Originally Posted by tatertot91 View Post
    SLP MAFS are crap if thats what you mean, and look for a PTM or Nick Williams (NW) Throttle Body
    agreed^^ I am not a fan of anything slp except their lids. And nick williams is your best bet for a good tb unless your on a budget then you can go with something like a godspeed..

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    Senior Member INMY01TA's Avatar
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    I use the Nick Williams 90mm throttle body with the stock maf and stock bellows. (it all fits) The PTM 90 tb is noce too and will save a little $.

    Last edited by INMY01TA; 12-05-2011 at 04:21 PM.

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    Old Member, New Username BrownsMillsAntz's Avatar
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    Leave the maf alone and just pick up a 90mm tb...Id stay away from fast though, atleast the older ones

    Heads/Cam/Intake/Stall.
    404 Rwhp uncorrected @ 6400

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    Sold: LS1 '85 El Camino ls1camino's Avatar
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    Save your money and either keep the stock MAF or get the car Speed Density Tuned (instead of tuning off the MAF, you tune the car using the MAP or Manifold Absolute Pressure sensor).

    Quote Originally Posted by BrownsMillsAntz View Post
    Id stay away from fast though, atleast the older ones
    The FAST90s liked to leak air. FAST fixed this problem with the FAST92s and carried it over the the FAST102s.

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    Senior Member INMY01TA's Avatar
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    I always read the problem with the FAST 90 tbs was the blades would get stuck open...

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    Sold: LS1 '85 El Camino ls1camino's Avatar
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    Quote Originally Posted by INMY01TA View Post
    I always read the problem with the FAST 90 tbs was the blades would get stuck open...
    You are right, I was talking about the intakes themselves leaking.

  9. #9
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    Fast 90s usually need re sealed if they havent been already.
    If it was me I would do

    Fast Toys 85mm Lid
    04 Z06 85mm mass air
    NW 90mm Tb

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    Senior Member INMY01TA's Avatar
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    Ohh. Haven't had any problems with mine, yet. (knocks on wood)

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    Sold: LS1 '85 El Camino ls1camino's Avatar
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    Quote Originally Posted by scott5 View Post
    Fast 90s usually need re sealed if they havent been already.
    I tried resealing mine at leas twice...I gave up and just dealt with the high idle.

    I now have a FAST102 and it's glorious.

  12. #12
    Junior Member 1WickedWS6's Avatar
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    So you're not having any issues with your FAST 102? I've been looking into these a lot lately but I don't want to get one if it is going to give me problems.

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    Quote Originally Posted by 1tacticalSOB View Post
    So you're not having any issues with your FAST 102? I've been looking into these a lot lately but I don't want to get one if it is going to give me problems.
    No, he is sAying he likes his 102 alot more than his 90. They are some issues with them though depending how picky you wanna be. Alot of guys tear trm apart and smooth them out, some
    Have to grind the water pump and the price is a big issue. Lol..

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    Quote Originally Posted by tatertot91 View Post
    SLP MAFS are crap if thats what you mean, and look for a PTM or Nick Williams (NW) Throttle Body
    Why do you say that slp are garbage? I read alot of threads about people complaining about them but none actually giving a reason why. Most of the issues are the resistors inside the maf which can be fixed in 2 mins, But the slp maf is actually a delphi maf with just a sticker over it. I have and know ALOT of people that have had slp maf and not have one issue with them.

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    Junior Member 1WickedWS6's Avatar
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    Ya see that's why I wasn't so sure about them. I'd probably be better off going with an ls6 intake which is much cheaper

  16. #16
    Moderator Firebirdjones's Avatar
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    The MAF's got a bad rap (not just the SLP's) because people were just throwing them on and running with them.
    Idealy you need to re-tune the MAF tables for any aftermarket or Delphi MAF to work properly for each application. People just aren't doing that and simply blame the MAF for their problems. It has since become internet folklore.


    I agree with LS1camino, go SD tune and drop that MAF completely. I never understood the larger intakes and throttle bodies and then running the small 75mm MAF. Just doesn't make sense to me.
    I personally would run the larger MAF with the larger FAST intake (choose your poison) and have the car tuned properly, or completely delete the MAF all together. It's one less electronic device to worry about.

  17. #17
    Member BrntWS6's Avatar
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    I got a 85mm Z06 MAF off E-bay for $40 shipped then coupled to a 22* smooth bellow with a FTP lid. And finally a FAST 92/92 ported and port matched. The port matching from the factory on the FAST intakes is HORRIBLE, I spend two days on this alone. Then cleaning up all the casting marks on the base and shell took another day sanding to an 800 grit finish. Powdercoated SOM for some bling!


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