jp98

iTrader: (2)

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?

'02 WS6

iTrader: (73)

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!

jp98

iTrader: (2)

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?

twitchtwice

iTrader: (12)

it may be really close to 500 i would say you would gain maybe 5-6?

bigdsz

iTrader: (1)

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.

BerryWS6

iTrader: (9)

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

5.slow99

i think it would help you a little bit 85mm or 100mm both good.

01Z0H6

iTrader: (63)

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..

jp98

iTrader: (2)

how do you now if 100mm is to big? Or is your mas air never to big?

BLACKGOAT07

iTrader: (3)

MAF really maxed out at 500? thought they were good to atleast 600 or so!

BLACKGOAT07

iTrader: (3)

What intake manifold and throttle body are you running?

jp98

iTrader: (2)

Fast intake and a 90mm throttle body, Patriot Heads 317s,TSP 248/254 .611"/.613", 113lsa cam

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.

01Z0H6

iTrader: (63)

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....

bigdsz

iTrader: (1)

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.

12secSS

iTrader: (30)

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?

Fast Toys Performance Parts

iTrader: (3)

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.

'02 WS6

iTrader: (73)

Ordered mine Tuesday w/ 5-pin harness BTW. Thanks Phillip!

bigdsz

iTrader: (1)

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.

Fast Toys Performance Parts

iTrader: (3)

Thanks for the great info. We actually sell the Ligenfelter MAF's and will get the site updated with that product shortly.

Thanks