outdooricon

Lets settle this debate...I've read many people going both ways, no solid reasons though. I don't want responses of "MAF Ends are just the best"... lets have facts and real-life examples. So which is the best way to go...Granatelli MAF, MAF Ends, Descreened Stock MAF or Pure Stock MAF...and why?

Edit: Assume that through any of these choices, the car is tuned appropriately.

kcshaner

See my mods, I am still running the stock screened MAF for a reason

fate

Yeah looking to know the answer to this myself.

madhatter

Keep the stock MAF. Tuning will be much easier for the tuner if you do. Only way I can see MAF ends or a new MAF benifitting you is on a basically stock car.

96capricemgr

iTrader: (1)

The stock MAF is not a restriction till you are making BIG power so why deal with the tuning hassles of anything else. Descreening in some rare cases caused some funky idle issues but otherwise provides not real benifit or harm.

93ZM6

I dont have MAF since i have a 93 but why pay 350 bucks or whatever it is for a new MAF that might give you 2 horsepower if your lucky.

Gangly

GMAF has been known to cause numerous issues with cars, mainly noticable power drops and tuning issues. It has been advised in recent years to steer clear of the GMAF. I have MAF ends on my car because they were a gift, but otherwise, i would be running a descreened MAF. Only reason is because i would do any free-mod to my car if it even gained me .00001 hp.

Coders11

iTrader: (1)

im with gangly on this, leave the stock in and just take the screens off. sure you may only gain .0000001 hp but it was a free .0000001 hp and every little bit counts (we count in hundredths of a second remeber)

outdooricon

This is precisely why I descreened mine. I find it interesting that MAF ends hold no benefit though...

Gangly

i didnt notice any hp with the MAF ends, but i did notice a smoother top end. maybe that takes into account for something but who knows. With the MAF ends and the Air Foil, i gained 3.x rwhp and 3.x tq if i remember correctly.

WhiteSSP

I ran .6 @ 2mph faster with a ported stocker than a granatelli. I ran .1 @ 1mph faster with a screened unported stocker compared to the ported stocker. Basically, i went from 14.1@99.9 to 13.5@103.9 going from a granatelli, to a stock MAF, and the weather was actually worse running with the stock MAF compared to the run with the granatelli.

94greencamaro

iTrader: (8)

Theres no way a MAF costed you 6 tenths of a second. I noticed you have a M6. You obviously hit shifts better when driving with the stock. Dont want to start an argument, im just sayin 6 tenths of a second is a little much for a mass air flow sensor. Maybe one tenth

HBHRacing

one word will explain it all
JKIS


Just Keep It Stock



Untill your pushing over 450 HP you need to even worry about the MAF becoming a restriction. So don't even bother

thesoundandthefury

iTrader: (3)

Not trying to hijack this thread, but I'm wondering why more people don't just do away with MAF altogether and convert to speed density? I've always been under the impression that speed density was GOOD. Does MAF out-perform a speed density setup in a way that makes it worth all the hassle?

infinitebird

iTrader: (11)

SD vs. MAF might be relevant as a design argument, but it's generally not a real good idea to convert between them on the same car.

The 94+ cars that were designed to use the MAF are usually erratic and not very reliable when you run without the MAF. Many times they won't even start if you disconnect it.

WhiteSSP

That was my only change, and it wasnt because i Shifted quicker. I learned to launch the car better sure, but it had nothing to do with shifting. I also picked up 4mph going to a stock MAF from the granatelli, so the proof is in the pudding, the power was definitely made over the Granatelli with the stocker. FWIW, it was late fall when i ran with the granatelli (60's with low humidity, -100DA) and early summer when i ran with the stocker (80's with high humidity, 350DA), so weather was actually in favor of the Granatelli.

So even if we dont look at the ET but just the MPH, which is more of an idication of HP made than just traction, I made 4mph more than the granatelli. Thats a huge increase.

Granatelli sucks unless you're stockish.

94greencamaro

iTrader: (8)

Hey im not sayin Granatellis are good. I still have my stock MAF. Im just sayin a 6 tenths gain is like 50 hp just from a damn MAF. No way. Thats the kind of gain you get with something like heads. What, did you run your Granatelli with a towel stuck in it.

WhiteSSP

Nope. I do have a PCM tune though, however I told Ion when he tuned it that I was running a Granatelli. He told me that going to a stock MAF I would pick up 2-3mph with his tune. I havent run it without the tuned PCM in there yet, i might want to try it just to see what it does.

Also, 104mph run was done throwing 4 degrees of knock in 3rd and 4th gears at the end of the track for some reason. I dont know about the 99mph trap with the granatelli because i didnt have a Scanmaster at that time, and with the 103mph run with the ported stocker, I showed zero degrees of knock retard throughout the whole run. I'm confident that I could have trapped 105mph with no knock at all, and definitely hit a 13.4 that night.

Like I said, most of the 6 tenths is from my better launching (going from a 2.29 to a 2.06), but the MPH pickup is uncanny.

96capricemgr

iTrader: (1)

A friend has a F-body Granatelli and my car is currently setup for a stock f-body MAF, I can see what it does on my car if my friend can find his Granatelli. He has never used it as just after he bough5t it used he began doing research and realized his mistake.

RoAdRaGe912

i just hope that noone thinks that this thread is actually informative.