JEB99TA

iTrader: (32)

I just had a F.A.S.T. 90/90 setup installed on my T/A. Did anybody keep their stock MAF when doing the 90/90 addition? If so, what dyno numbers did you achieve with JUST the stock TB?

Also, if you didn't get good numbers with the stock MAF, is there anyone who saw remarkable gains with JUST adding a 85mm-90mm TB when you realized the stock MAF didn't work well with the 90/90 setup? ... after tuning of course.

Justin00SS

iTrader: (5)

I've been told that there is not difference in the mafs.

Blown2000SS

maybe a few hp. not much

ZL1Killa

iTrader: (17)

i have my stock MAF and i descreened it and tuned it. i'm confused...you are asking about the MAF, and you say if so what dyno numbers did you get with the stock TB? a stock TB won't work with the fast from what i have heard.

u get good numbers regardless of the MAF. PE mode it makes things easy. I have a 90mm Nick Williams TB and 90mm FAST intake.

carado1984

i would not worry about the maf.. thats not much of a restriction.

Even so i would not buy another maf unless someone gave me one free from a z06 not the slp or granatelli maf and then i would have it tuned... and even still, i probably wouldnt do it.

Youre well below the hp mark where it would make a difference..

JEB99TA

iTrader: (32)

One of the best tuners in the state is tuning my car. His shop built my motor and he recommended I buy the SLP 85mm MAF. He told me the stock MAF would hurt my power level and that I need a bigger MAF. They definitely would have charged me for a neww MAF if they would have installed one, so, the old one is still on the car. I looked at it last night and there's definitely not a new MAF on it.

I'm going to have him do a couple of dyno pulls with the stock MAF and them install the SLP 85mm MAF and I'll post up the results in the dyno section with a link to them here.

Thanks for the replies. Hopefully, jimmyblue or a good tuner will weigh in on my original question here.

When my motor was forged, the ringlands were set up for a 200-250 nitrous hit. In the spring, a progressively controlled, direct port 250 nitrous kit is going on the car. Since it's a direct port setup, will the MAF make a difference?

orangeapeel

iTrader: (18)

You can get the Delphi MAF or ZO6 MAF to replace the stocker as well as the SLP. They are all three 85mm. I run the Delphi 85mm on my Z28 w/ direct port of 275-350 shot. You are gonna be laying down enough power to max out the stocker for sure. It is a good idea to upgrade in your case.

scotts94_z28

Why not just go SD and get rid of the MAF al togethor?

2 fast 2000

iTrader: (4)

I have h/c and 90/90 and my car dynoed the same with the stock descreened as it did with the SLP descreened. It also did the same with the spray. I don't think your going to max out a factory descreened MAF. I know others on here might say you will, but I'm 550rwhp on spray and my stocker is fine. IMO upgrading the MAF is a waste.

lsx24

iTrader: (45)

Get the PACEPARTs 85 mm calibrated MAF sensor, no extra tuning required. I ran it and it runs like a champ.

TheBlurLS1

iTrader: (8)

When you use nitrous, it doesn't cause any more flow through the MAF, unless it's a dry kit.

A 400rwhp car on motor is going to have the same amount of **** flowing through the MAF no matter if it's spraying nothing or a 200 shot.

You CAN run into a restriction with the stock MAF if you're over 500rwhp N/A. In this case, the best option is a factory 85mm and tuning work to compensate. Some people run the SLP and Pace units without problems, but that's up to you.

tim99ws6

iTrader: (31)

i made 460rwhp through a stock maf and a 90/90. This was n/a on a 347ci motor

JEB99TA

iTrader: (32)

Have you ever put it on a dynojet with a 85mm MAF? If not, how do you know the stocker is not costing you power? How much nitrous are you spraying? ... 100? ... 150? ... 200?

ZL1Killa

iTrader: (17)

The MAF is a restriction but its not gonna hurt your pwer level. getting a Z06 MAF might be worth 2-5hp at MOST... so .. yeh...

honestly, there is no best tuner, as everyone does things differently, and there are so many damn ways to skin a cat.....
there are good tuners that do the job right.

2 fast 2000

iTrader: (4)

Read the post! I dynoed it back to back with both on and off the juice. Did not see any difference at all.

lsx24

iTrader: (45)

I find it hard to believe, on a 90/90 setup, that a 75 mm MAF is not a restriction. If the 90/90 is flowing to it's utmost, then just physically speaking, the small MAF will be a restriction. Forget about how much hp it can handle, hell a stock TB and ls6 intake can handle 600 rwhp, that's not the point. The point is does it have a restriction, and in a 90/90 setup that is actually using the 90/90's performance, I would say a definate YES. Just look how small it is compared to 90mm! At full flow there's no way a 75 mm MAF (or a 75 mm Throttle Body for that mattter...) can keep up with a 90 mm intake.

BlackScreaminMachine

iTrader: (17)

There many 9 second cars running on stock MAF's, if its that much of a restriction you would run the car on speed density instead.

JEB99TA

iTrader: (32)

Sorry! I did read your post. I was rushing at lunch and sometimes my short term memory is not so great. I missed that you had dyno'd with BOTH MAF's. Can you post the dyno sheets so I can see how each MAF chnaged your power/TQ curves?

lsx24

iTrader: (45)

That doesn't mean it's the optimal combo. Like I said you can make 600 rwhp with the ls6 intake, that doesn't mean it's best.

redtail2426

iTrader: (10)

ok guys please dont think the stock maf is not costing power,it is certainly a restriction on a n/a motor over 400 rwhp.It HAS been dyno proven.Guys who say they have made 460 NA with a stock maf,well guess what,you would make probably 480 with no maf and a nice SD tune.I know when my 90/90 goes on,there wont be a maf.You can pick up some decent power removing it,if you dont want to do that then get the biggest one you can find,this is if your running a 90/90 combo.If your using a 75-80mm throttle body,then dont worry about your maf hurting your power.