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bigger mas air will it help?

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Old Feb 9, 2009 | 07:10 PM
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Default bigger mas air will it help?

I have a 408 built fairly decent, I am still running the stock mas air, will a aftermarket one gain me anything noticeable? Any suggestions on brands and size?
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Old Feb 9, 2009 | 07:30 PM
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Sure it will! Stock cube H/C ls1s notice improvements so I would say you surely will. I'd go w/ a Delphi 85mm or TSP 100mm MAF w/ FTP 85mm lid or (if they release it soon) a TSP 100mm lid, either one and you'll be set!
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Old Feb 9, 2009 | 08:51 PM
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Sounds good motor made 489rwhp and 472rwtq. would like to get it to 500+ rwhp. Do you think 85mm mas air would get me there?
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Old Feb 9, 2009 | 09:19 PM
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it may be really close to 500 i would say you would gain maybe 5-6?
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Old Feb 9, 2009 | 11:27 PM
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I picked up 50+ rwhp by adding a Lingenfelter 100mm MAF, MW 90mm TB, and Fast intake. Final numbers were 524/501. I was very pleased.
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Old Feb 9, 2009 | 11:37 PM
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I just had a Speed density tune that deletes the MAF. I was maxing out the MAF pretty bad.
now the car runs great at all RPM's
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Old Feb 10, 2009 | 03:21 AM
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i think it would help you a little bit 85mm or 100mm both good.
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Old Feb 10, 2009 | 09:06 AM
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Brother, i know it will help... I recently added and unported FAST 90/90 along with FT85mm lid,Delphi 85mm MAF and gained 19 rwhp with a shitty tune!

do the lid, and the MAF, get a good tune and ill bet $$ you will be VERY close to 500hp..
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Old Feb 10, 2009 | 09:55 PM
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how do you now if 100mm is to big? Or is your mas air never to big?
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Old Feb 11, 2009 | 01:32 AM
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Originally Posted by BerryWS6
I just had a Speed density tune that deletes the MAF. I was maxing out the MAF pretty bad.
now the car runs great at all RPM's
MAF really maxed out at 500? thought they were good to atleast 600 or so!

Last edited by BLACKGOAT07; Feb 11, 2009 at 02:00 AM.
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Old Feb 11, 2009 | 01:32 AM
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Originally Posted by jp98
how do you now if 100mm is to big? Or is your mas air never to big?
What intake manifold and throttle body are you running?
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Old Feb 11, 2009 | 08:01 AM
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Fast intake and a 90mm throttle body, Patriot Heads 317s,TSP 248/254 .611"/.613", 113lsa cam
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Old Feb 11, 2009 | 07:37 PM
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I'd try putting true duel exhaust on the car, that gained me about 27rwhp.
Then 100mm mas air. Is your car a orange trans am? Never seen one before.
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Old Feb 12, 2009 | 02:19 PM
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27rwhp for a set of True Duals... Really ... What supporting mod's are you running with that? Are you saying you added a set of true duals to an otherwise stock LS1 and gained those numbers...?

Do tell....


Originally Posted by 1SS2
I'd try putting true duel exhaust on the car, that gained me about 27rwhp.
Then 100mm mas air. Is your car a orange trans am? Never seen one before.
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Old Feb 12, 2009 | 02:58 PM
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27 rwhp, somethings wrong, my friend disconnected his SLP cat back on his 408 and only gained 4 rwhp. He did this because he was trying to determine if he should run cut outs.

My '09 Vette as per GM only gains 6 hp, not rwhp, with the NPP exhaust which is supposed to, at least partially, bypass the muffler.
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Old Feb 12, 2009 | 03:32 PM
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A bigger MAF will help only if you already have a lid, throttle body and intake to take advantage of it. No use going with a stock replacement lid, to an 100mm MAF, on a 90/90 intake ... or worse an LS6 intake. Think of the intake system like your exhaust, you wouldn't run a 2-1/2" I-Pipe off of your 3" Y-pipe to feed your 3" muffler now would you?
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Old Feb 12, 2009 | 03:37 PM
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Default Yes!

If you upgrade to the 85mm MAF with our Fast Toys 85mm lid and get a proper tune, you will easily see a siginificant HP gain. We've had stock cube, cam only cars pick up .7-.8 MPH in the quarter. A heads/cam or larger displacement motor will gain even more.
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Old Feb 12, 2009 | 10:22 PM
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Ordered mine Tuesday w/ 5-pin harness BTW. Thanks Phillip!
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Old Feb 12, 2009 | 10:42 PM
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FWIW, I was able to get the Fast Toys lid to fit on the Lingenfelter 100mm MAF. I boiled some water immersed the MAF end of the lid until the plastic was soft. Then I immediately slid the lid over the MAF and put on a band clamp. Worked great.
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Old Feb 13, 2009 | 11:19 AM
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Originally Posted by bigdsz
FWIW, I was able to get the Fast Toys lid to fit on the Lingenfelter 100mm MAF. I boiled some water immersed the MAF end of the lid until the plastic was soft. Then I immediately slid the lid over the MAF and put on a band clamp. Worked great.
Thanks for the great info. We actually sell the Ligenfelter MAF's and will get the site updated with that product shortly.

Thanks
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