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  • #1

    MAF/TB/Intake questions

    Hey guys - piggybacking off my list of exhaust questions, I am looking for a little preliminary info on the intake side as well. Again - street car, looking for it to be a reliable, headache free operation.

    My understanding is that the stock MAF and TB are something like 75mm. I'm looking to do a few performance upgrades, but nothing drastic. Don't even know if i'll ever do an aftermarket cam. Current thoughts are:

    Lid
    Potz ported MAF
    Pots ported TB
    LS6 Intake
    Stock exhaust Manifolds
    Upgraded "Y" with high Flow Cats
    Some catback (currently leaning towards magnaflow)
    PCM Tune

    My question is on the intake side of the list above - is there anything I should or shouldn't be doing? Any tuning issues with porting the MAF and descreening? Any issues in running the 75mm with the LS6 intake? Should I go with a larger TB and forego the ported stocker, or would this be sufficient to support my plans?
    2000 SS Convertible #1414 - Light Pewter 6 Speed
    Tags: aftermarket, cam, car, catback, exhaust, free, guys, hey, high, info, intake, issues, list, maf, performance, ported, question, questions, run, running, side, stock, street, support, tuning
  • #2
    lid is a great mod
    ported TB is good for a few hp
    Id say leave the MAF alone as I dobt you'll see any gains with ported ends or descreening
    LS6 intake, good choice
    stock manifold won't be ideal but if your looking for a quiet car then running cats and a stock exhaust will be very mild sounding IMO
    pcm tune is very worthwhile
    Doing less with more


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    • #3
      So, the MAF wouldn't be limiting the effectiveness of a ported TB? If the MAF isn't the bottleneck in the intake, I'll save myself the cash.
      2000 SS Convertible #1414 - Light Pewter 6 Speed

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      • #4
        Not at all, a stock ported TB will also support your goals just fine.
        Doing less with more


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        • #5
          Cool, I like answers that save me $$!
          2000 SS Convertible #1414 - Light Pewter 6 Speed

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          • #6
            I have a ported TB and the only difference i noticed was better throttle response, that was my main goal anyway.

            I also have a SLP maf, only reason i have that installed is cause at the time i got it for a steal, and between the stock and the slp maf, the tuner said with my new incjecters that the slp maf would be needed anyway, not sure why, but thats what i had on it when they tuned the car. i doubt a different maf would make any difference at all with your setup.

            2001 Bright Rally Red Camaro SS             - M6, Livernois Stage 3 ported 243 heads, Livernois 230/236 114 LSA cam, FRPP 36# injectors, Ported TB, SLP MAF, Volant CAI, Kooks 1 3/4 headers & ORY, GMMG Cat-back. Koni SA 4/3's, BMR springs, Founders Performance, STB, LCA's and Panhard bar.

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            • #7
              Dynoed a built 416 not long ago with a stock ls1 maf.
              With and without the maf was 2hp diff .

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              • #8
                Descreening the maf has been known to cause issues with how the maf reads
                2015 Silverado

                Originally posted by JoeliusZ28
                If you need 6 and half grand to break your tires loose you shouldnt be attempting a holeshot.

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                • #9
                  Originally posted by Boost Addict View Post
                  Descreening the maf has been known to cause issues with how the maf reads
                  That's what I was concerned with. I de-screened and re-screened my MAF on my old '99 L36 Grand Prix, and never noticed a difference with an autotap. Never had the car on a dyno though.
                  2000 SS Convertible #1414 - Light Pewter 6 Speed

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                  • #10
                    Originally posted by Atrus View Post
                    That's what I was concerned with. I de-screened and re-screened my MAF on my old '99 L36 Grand Prix, and never noticed a difference with an autotap. Never had the car on a dyno though.
                    mine is descreened, never felt any difference and the car didn't run any different. buy yeah i've heard of peeps having issues from removing,

                    2001 Bright Rally Red Camaro SS                     - M6, Livernois Stage 3 ported 243 heads, Livernois 230/236 114 LSA cam, FRPP 36# injectors, Ported TB, SLP MAF, Volant CAI, Kooks 1 3/4 headers & ORY, GMMG Cat-back. Koni SA 4/3's, BMR springs, Founders Performance, STB, LCA's and Panhard bar.

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                    • #11
                      Any tuner will tell you never to de-screen a MAF that came with a screen.


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                      • #12
                        Originally posted by c0ncEpT View Post
                        Any tuner will tell you never to de-screen a MAF that came with a screen.
                        I asked mine about that and they said it was no big deal?

                        2001 Bright Rally Red Camaro SS                         - M6, Livernois Stage 3 ported 243 heads, Livernois 230/236 114 LSA cam, FRPP 36# injectors, Ported TB, SLP MAF, Volant CAI, Kooks 1 3/4 headers & ORY, GMMG Cat-back. Koni SA 4/3's, BMR springs, Founders Performance, STB, LCA's and Panhard bar.

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                        • #13
                          Here's a dumb question - are '98-'02 MAF's all the same, or did they change at some point?
                          2000 SS Convertible #1414 - Light Pewter 6 Speed

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