philsblwnz28

iTrader: (10)

Will a ASP pulley give my motor knock retard or pull timing? I have a 99 Z28 with LS6 intake, LT headers, 85mm Granitelli MAF, 6spd car. I went from running 12.8 to 12.9's @110 to running 13.5@104.....So whats going on here I am lost. I ran the 13.5's after I installed the pulley and MAF.....HELP please

calongo_SS

iTrader: (7)

Take the Granetelli MAF off and put the stock one back on or get the car tuned.

philsblwnz28

iTrader: (10)

Ok, thats what I thought, but didnt know.....Thanks

krazy4

iTrader: (5)

The maf is ******* you over

philsblwnz28

iTrader: (10)

So with a tune will that MAF help

calongo_SS

iTrader: (7)

no, but at least it wouldn't be hurting you anymore.

philsblwnz28

iTrader: (10)

So what do I need for it to help me

calongo_SS

iTrader: (7)

It's just not going to help you much at all. It's not a good bang for the buck mod. You may pick up a few hp over the stock piece with it after tuning, but it's not going to be worth what you payed for it.

philsblwnz28

iTrader: (10)

So will a ASP pulley give me Knock Retard

calongo_SS

iTrader: (7)

It shouldn't. I ran one for years, plenty of people running them. I suppose anything is possible.
Why do you think you have KR? Have you scanned the car?

01ssreda4

iTrader: (96)

get it tuned and have the tuner check to see if it is pulling timing..

Ironxcross

iTrader: (8)

Don't bother getting an aftermarket MAF at your level. Like you've just seen, it does more harm than good.

TheSilverOne

iTrader: (22)

yes definitely get rid of the 85mm Granitelli MAF **** and put the stock MAF back on.

Damian

iTrader: (89)

Granatelli MAF's are garbage.

To answer your question, YES a pulley can give you KR if it's warped, or hasn't been installed/seated properly. I've seen wobbling pulleys give false knock. Highly unlikely thats YOUR problem, but it is possible.

SS1875

iTrader: (34)

^^^+1 on that.....been there, done that, and changed it out for an ATI .

themack56

iTrader: (70)

If you get a bigger maf you must get a tune. It will just hurt if you don't have it tuned, alot of people say that the stock maf is better not true, bigger maf with a tune is better any day of the week. Even though they say that the stock maf is good for 500 ponys, that dosn' t mean it's not a restriction. If you have a 90 mm tb and the stock maf your just bottle necking the air. Best bang for the buck maf is delphi z06/truck maf, I got one on ebay for 35 shipped brand new! Don't ask for the link cause the seller dosn' t have anymore. For people running the stock tb, then the stock maf is fine.

themack56

iTrader: (70)

By the way I agree that granatelli mafs are pieces of sh*t.

philsblwnz28

iTrader: (10)

ok, I have an slp airlid, smooth bellow, ported TB, and LS6 intake. So if I send my Granatelli back, I should get the Delphi one right? Then get it tuned I will be fine right?

Lt1Porsche

iTrader: (6)

Not trying to hijack at all but if someone wanted to switch to a full 85mm setup, what MAF and LID would you recommend?

themack56

iTrader: (70)

Fast toys lid, with delphi/gm maf and fast 90 or 92