Gained 3 mph in 1/4 mile

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Nov 23, 2006 | 01:34 PM

#21

Ragtop 99

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From: Bethesda, MD

If you were a little rich, the GMS leaned you out. Tuning would have been a better investment, but enjoy the fact that it worked for you.

Nov 23, 2006 | 02:36 PM

#22

qwikz28

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From: Franklin Lakes, NJ

Quote:

Originally Posted by damon_Z

From looking at the graph and squinting my eyes, it looks like you're somewhere in between 13.5 and 14.0. What is you're air/fuel ratio exactly?

at about 3-4k im slightly above 14 and then it leans out to about 13ish. over 14 is alot... i got my granatelli for free and i gave it away for trade on a stocker. its not worth a dime

Nov 23, 2006 | 06:29 PM

#23

tacklebox

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From: Carroll, MD

Is it better to use the stock maf "as-is," or descreen it? I notice some people descreening and porting their stockers.

Nov 23, 2006 | 06:41 PM

#24

qwikz28

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From: Franklin Lakes, NJ

Quote:

Originally Posted by tacklebox

Is it better to use the stock maf "as-is," or descreen it? I notice some people descreening and porting their stockers.

unless you have a serious heads/cam or FI setup, leave it screened. descreening a maf on a bolt on car may decrease power. i think slowhawk just did a test on that

Nov 23, 2006 | 07:42 PM

#25

tacklebox

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From: Carroll, MD

Yea my H/C setup will be going in this winter. Will 430-450 rwhp be too much for a screened maf?

Nov 23, 2006 | 07:52 PM

#26

qwikz28

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From: Franklin Lakes, NJ

Quote:

Originally Posted by tacklebox

Yea my H/C setup will be going in this winter. Will 430-450 rwhp be too much for a screened maf?

the screen will become a restriction but its also there for a reason...

Nov 23, 2006 | 08:28 PM

#27

mullenh

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From: pensacola, florida

Quote:

Originally Posted by BrandonDrecksage

no, normally they stay running lean till you do another mod and go to lean and blow up, but that isn't to common. Usualyl someone will go to get a car tuned and th tuner won't like the aftermarket maf..lol.

you are right the large maf fools the computer to believe there is less air flow so the fuel is reduced and timing is advanced.

Nov 23, 2006 | 08:54 PM

#28

qwikz28

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From: Franklin Lakes, NJ

Quote:

Originally Posted by mullenh

you are right the large maf fools the computer to believe there is less air flow so the fuel is reduced and timing is advanced.

your sig is effin hilarious!!

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Nov 24, 2006 | 03:21 PM

#29

mullenh

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From: pensacola, florida

Quote:

Originally Posted by qwikz28

your sig is effin hilarious!!

I did not think anyone noticed or knew what it reffered too.

Nov 25, 2006 | 03:35 PM

#30

tacklebox

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From: Carroll, MD

So the screen on the stock maf isn't meant to be removed, but leaving the screen on would be a restriction at 450 rwhp. At the same time, an aftermarket maf is no good and its hard to tune. Do i have any other choice but to go maf-less?

Nov 25, 2006 | 05:40 PM

#31

Red99TA

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From: Topeka, KS

MAFless is easier than you think. Especially if you have HPTuners or EFIlive

Nov 25, 2006 | 05:45 PM

#32

unit213

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From: Earth

Quote:

Originally Posted by tacklebox

You absolutely can remove the MAF screen.
Personally, I see no point in running a speed density tune. Guys
are running a hell of a lot faster than you on the stock MAF.

Just my 2 cents of course. Congrats on the trap speed gain.

Nov 25, 2006 | 06:11 PM

#33

mullenh

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From: pensacola, florida

Quote:

Originally Posted by Red99TA

MAFless is easier than you think. Especially if you have HPTuners or EFIlive

it is true there are people out there that do it. i don't know how too. infact i am in shopping for a tunning package and do not know which one to buy. i was reading a thread by some one who had the hp tuner and the first thing in it was replace your stock maf! he too admitted to not knowing how to do an sd tune. but still i would think you would want to be proficient at tuning before removing the maf. and i still dont know if i need a hand held or the laptop version.

Nov 25, 2006 | 08:31 PM

#34

TORCHD 02 TA

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Quote:

Originally Posted by qwikz28

your sig is effin hilarious!!

Nov 28, 2006 | 08:47 PM

#35

Fast Toys Performance Parts

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Ftra

Glad to see you have such a fantastic improvement

Nov 28, 2006 | 09:21 PM

#36

bigfoot2thefloor

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From: Ellicott City,MD

dude its MD! i had a 12.8 4 weekends straight and 2 weekends later a 12.7! its getting cooler! way to take advange of it tho!

Nov 28, 2006 | 11:05 PM

#37

tacklebox

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From: Carroll, MD

Quote:

Originally Posted by bigfoot2thefloor

dude its MD! i had a 12.8 4 weekends straight and 2 weekends later a 12.7! its getting cooler! way to take advange of it tho!

Congrats. Sounds like you had a good run. But my runs were back in late Sept/early October. Race temp was in the low 70's. I haven't been to the track in a month or two to experience the "cooler" racing weather.

Nov 28, 2006 | 11:16 PM

#38

tacklebox

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From: Carroll, MD

...your right up the road from me i just moved to columbia.

Nov 29, 2006 | 11:24 AM

#39

bigfoot2thefloor

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From: Ellicott City,MD

sweet post or pm me a pic of your car and ill keep a look out for you.. always nice to see fellow enthusiasts

btw i just read my last post sorry i sounded like a dick i didnt mean it that way

Nov 29, 2006 | 05:36 PM

#40

v8hunter

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From: Eugene, Oregon

I've heard many times that the ftra is worth a few mph in the quarter. I'm guessing the other 1 mph is from better weather, better driving, or the GMS maf leaning your car out.

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