Thread: LT1 Maf

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  1. #1 LT1 Maf 
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    So I have perhaps a stupid question, but when folks mention running an lt1 maf, what vehicle are they referencing when they buy it, there seems to be a couple different ones. I've read one is 3" and another is 3 1/2". Seems like a 3 1/2" would be hard to outflow.
    1998 Grand Prix GTP aka The Family Sedan
    CAI, 1.8 rockers, U-bend delete, 3.4 pulley, tuned by me
    1999 Turbo Grand Prix
    L36 turbo build in progress
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  2. #2 Re: LT1 Maf 
    GrandPrix Junkie ItHurtz's Avatar
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    If its a turbo you will outflow them all, thus enter the AFC
    2000 GTPT Sold-brandonhall10 built trans
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  3. #3 Re: LT1 Maf 
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    I'm not planning on running more than 15 lbs of boost. I may end up going with an AFC, I haven't decided yet. I'd still like to know what folks are using as I see a ton of folks using or have used the LT1 Maf.
    1998 Grand Prix GTP aka The Family Sedan
    CAI, 1.8 rockers, U-bend delete, 3.4 pulley, tuned by me
    1999 Turbo Grand Prix
    L36 turbo build in progress
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  4. #4 Re: LT1 Maf 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    LT1's would be like 92-97 350's from like a camaro/firebird or similar car.

    The GM LS1 style or truck style MAF comes in anything from 98/99-06. All the truck MAF's are the same for 4.8/5.3/6.0.

    I'd like to see someone put the stock MAF in a 4in intake tube with a custom aluminum MAF mount welded to it. Being that it's a card style MAF it should work great, just stick a honey comb air straightenererererer in front of it. Should help on the limits of the MAF.

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  5. #5 Re: LT1 Maf 
    GrandPrix Junkie ItHurtz's Avatar
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    I ran turbo on stock motor, 15psi maxin stock maf.
    Now I got cam and ported heads and I can hit over 13,000hz.

    AFC or you can stick the stock maf in a 4" tube to gain some head room
    2000 GTPT Sold-brandonhall10 built trans
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  6. #6 Re: LT1 Maf 
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    You got 15 psi on a stock maf? I thought they would max before that. The ls1 maf is the 3.5" one then correct? It seems you need an adapter harness to run it (or splice your own pigtail in). Is there any other reason to run an lt1 instead of an ls1. Seems like the ls1 would give me a lot more headroom than the lt1 in I decide to go that route.
    1998 Grand Prix GTP aka The Family Sedan
    CAI, 1.8 rockers, U-bend delete, 3.4 pulley, tuned by me
    1999 Turbo Grand Prix
    L36 turbo build in progress
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  7. #7 Re: LT1 Maf 
    GrandPrix Junkie ItHurtz's Avatar
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    go ls7, do it
    2000 GTPT Sold-brandonhall10 built trans
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  8. #8 Re: LT1 Maf 
    GrandPrix Junkie SgtMarshal's Avatar
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    LS7 maf is supposed to support something like 900 hp.
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  9. #9 Re: LT1 Maf 
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    I debated it, but I found a couple threads where people tried it but they all said they were difficult/impossible to tune properly. Apparently the ls7 maf is super sensitive. I would put a stock maf in a 4" housing before I would try that I think.
    1998 Grand Prix GTP aka The Family Sedan
    CAI, 1.8 rockers, U-bend delete, 3.4 pulley, tuned by me
    1999 Turbo Grand Prix
    L36 turbo build in progress
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  10. #10 Re: LT1 Maf 
    GrandPrix Junkie ItHurtz's Avatar
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    I think overkill has it nailed down
    2000 GTPT Sold-brandonhall10 built trans
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  11. #11 Re: LT1 Maf 
    Killa Bee Scottydoggs's Avatar
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    i was just taking to someone last night, they said they were talking to someone from intense iirc, said the maf should be on the turbo intake side at the air filter. not on the pressure side. why they keep breaking.

    seems ass backwards but kinda makes sense.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  12. #12 Re: LT1 Maf 
    GrandPrix Junkie SgtMarshal's Avatar
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    I just looked at overkills website and didn't the ls7 maf anywhere for sale
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  13. #13 Re: LT1 Maf 
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    Quote Originally Posted by Scottydoggs View Post
    i was just taking to someone last night, they said they were talking to someone from intense iirc, said the maf should be on the turbo intake side at the air filter. not on the pressure side. why they keep breaking.

    seems ass backwards but kinda makes sense.
    That actually makes sense to me
    1998 Grand Prix GTP aka The Family Sedan
    CAI, 1.8 rockers, U-bend delete, 3.4 pulley, tuned by me
    1999 Turbo Grand Prix
    L36 turbo build in progress
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  14. #14 Re: LT1 Maf 
    Killa Bee Scottydoggs's Avatar
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    only issue is the room to mount it, seems like every one is tight on air filter space. now add 3-4 inches to it. if theres a will, theres a way.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  15. #15 Re: LT1 Maf 
    GrandPrix Junkie ItHurtz's Avatar
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    stock maf never breaks

    With maf on turbo you have to deal with the fueling not being accurate with the bov throwing air away. Maf already read it but it never makes it to the motor.

    MIllions of turbos blow into a maf works for me!
    2000 GTPT Sold-brandonhall10 built trans
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  16. #16 Re: LT1 Maf 
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    Is there any reason not to use an ls1 maf?
    1998 Grand Prix GTP aka The Family Sedan
    CAI, 1.8 rockers, U-bend delete, 3.4 pulley, tuned by me
    1999 Turbo Grand Prix
    L36 turbo build in progress
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  17. #17 Re: LT1 Maf 
    GTP Level Member 231FUN's Avatar
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    You want to go with one that has an aluminum body, quite a few guys have blown apart the lq4 style plastic maf under boost.
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  18. #18 Re: LT1 Maf 
    I break stuff selliott's Avatar
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    Use the aluminum ls1 or lt1. You can adjust the maf tables with hpt where you won't need the afc. As far as placement of the maf pressurized or non, that depends on who you ask intense will say non and Zzp will say pressurized. I'm using a ls1 on the pressurized side with no problems.
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  19. #19 Re: LT1 Maf 
    GXP Level Member Turbocharged400sbc's Avatar
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  20. #20 Re: LT1 Maf 
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    Quote Originally Posted by Turbocharged400sbc View Post
    That would work too. I might try the ls1 maf with an aftermarket aluminum housing like selliott did, I'm thinking that should be enough for my goals. If I max that out then I'll go bigger.
    1998 Grand Prix GTP aka The Family Sedan
    CAI, 1.8 rockers, U-bend delete, 3.4 pulley, tuned by me
    1999 Turbo Grand Prix
    L36 turbo build in progress
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