Thread: Will I need an AFC?

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  1. #1 Will I need an AFC? 
    SE Level Member Jason68s's Avatar
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    I have a 67mm turbo on my L36. I've upgraded the UIM to the aluminum intake and will be running the N* throttle body with a LQ4 MAF. Will the upgraded MAF tables for the LQ4 be enough so I don't out flow my MAF or will I need a mini AFC also? I'm going to be running 14psi of boost. My upgrades are 1.9 Rocker arms, HV3 insert and a FMIC. When I had it on the dyno last fall I out flowed the stock MAF at about 4800 rpms. Any help or recommendations would be appreciated. Thanks.
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  2. #2 Re: Will I need an AFC? 
    Killa Bee Scottydoggs's Avatar
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    a lot of guys say to use the lt1 maf, its all metal and dont break apart when boosted via turbo.

    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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  3. #3 Re: Will I need an AFC? 
    GXP Level Member GTPpower's Avatar
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    Yes you probably will.

    I'd go with a ls7 maf in a 4" tube instead.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  4. #4 Re: Will I need an AFC? 
    GTX Level Member
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    id use a mini afc but still stick with the lq4 maf. my old build I kept my lq4 maf and used the mini-afc. the downside, like others mentioned is the lq4 maf is plastic and I cracked my ONLY cause I overtightened my clamp though lol
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
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