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Old 12-06-2006, 01:53 AM
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Default Granatelli?

I got full bolt-ons on a 98 ls1 and I dynoed 338/351....Is the Granatelli Maf holding me back?
Old 12-06-2006, 06:31 AM
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thats actually pretty good...especially the torque
Old 12-06-2006, 08:03 AM
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Originally Posted by fastest94v6
I got full bolt-ons on a 98 ls1 and I dynoed 338/351....Is the Granatelli Maf holding me back?
I don't much like the Granatelli MAF sensor....I just use an LS6 MAF from a Vette on mine.

But seriously...you put down some killer numbers man. There ain't nothing to be ashamed of with your car bro.
Old 12-06-2006, 09:14 AM
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Man im thinking the same thing with my car i only put down 306 unlocked HP through open headers. i was upset
Old 12-06-2006, 10:56 AM
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I put the slp maf on mine ( with screen ). I didn't notice much diiference. I too was wondering if i should put the stock back on.
Old 12-06-2006, 12:13 PM
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Originally Posted by erikthegoalie
thats actually pretty good...especially the torque

I don't know but I was sorta upset I was expecting something around 350 rwhp.
Old 12-06-2006, 12:27 PM
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Can you list your full mod list, to see if you have things like pulley, or EWP, what kind of headers, etc...

I had full boltons with my 98 M6 and I dynoed 344/350 but with shorty headers...plus ported ls6 intake, asp pulley, 85mm MAF, Suncoast Intake, shaner TB, bassani true duals, high flow cats, dyno tune.

The Granatelli is problably not holding you back...based on what your air/fuel ratio is (got a graph?), but might need some tuning if it hasn't been tuned already. There's no telling how it's calibrated, unless you know something about the voltages it puts out so I don't know how hard it would be to tune for it.
Old 12-06-2006, 03:49 PM
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those are pretty good numbers...
i put down 335/340 w/ full boltons... minus underdrive pully, EWP, and cutout...

are u A4 or M6?.. auto's always dyno less then manuals...
what kind of dyno was it on
Old 12-06-2006, 04:51 PM
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Originally Posted by presto_z
those are pretty good numbers...
i put down 335/340 w/ full boltons... minus underdrive pully, EWP, and cutout...

are u A4 or M6?.. auto's always dyno less then manuals...
what kind of dyno was it on
I got an m6...but the dyno i went to always tends to dyno lower...as far as my mods I got an ls6 intake, S2 tb, Asp pulley, Magnaflow, TSP ORY, Granatelli MAf, HPP3 (tuned for 93 octane).
Old 12-06-2006, 05:02 PM
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Those are excellent numbers. The stock manifolds are what are holding you back, but I don't blame you for keeping them. I live in Cali, that's why. Maybe an Electric Waterpump and almost any aftermarket lid will make a difference. Also a tune would help you out some as well. Dyno numbers don't tell the entire story. If you feel like yiou're putting down more power, then that's all that matters.
Old 12-06-2006, 05:44 PM
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Originally Posted by 98redM6
Those are excellent numbers. The stock manifolds are what are holding you back, but I don't blame you for keeping them. I live in Cali, that's why. Maybe an Electric Waterpump and almost any aftermarket lid will make a difference. Also a tune would help you out some as well. Dyno numbers don't tell the entire story. If you feel like yiou're putting down more power, then that's all that matters.
oh **** my bad i forgot, I got Pacesetters as well. lol
Old 12-06-2006, 06:08 PM
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Originally Posted by bjamick
Man im thinking the same thing with my car i only put down 306 unlocked HP through open headers. i was upset

I see that alot!!!! ill see a couple of cars with basically the same bolt on mods but some dyno way more than others. Why do you guys thinks that is???
Old 12-06-2006, 06:25 PM
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Not sure if my Granatelli is holding me back . That would be great if it was, I could gain som easy hp
Old 12-06-2006, 07:00 PM
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I would say get a dyno without that hpp3 in there. I made my car run like crap. So did the granatelli maf.

I sold both ofr $100 bucks on here. My car felt faster and I got better gas mileage.

20mpg > 12-10mpg
Old 12-07-2006, 08:25 AM
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Originally Posted by fastest94v6
I got an m6...but the dyno i went to always tends to dyno lower...as far as my mods I got an ls6 intake, S2 tb, Asp pulley, Magnaflow, TSP ORY, Granatelli MAf, HPP3 (tuned for 93 octane).
With those mods the numbers (hp specifically) are somewhat on the low side. Any chance of seeing the graph? But what's more important than the numbers is the change from configuration to configuration. For example what you gain by adding mods, measured on the same dyno. Although the numbers are less than ideal, they would give you a good indication of changes as you mod more. And like you said that dyno tends to give out lower numbers on average. If you want to get a better baseline, that's closer to other's averages you could always go to different dyno...
Old 12-07-2006, 08:35 AM
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The Granatelli MAFs have alot of issues. One may have a perfact curve, and the next one will make a car go lean or way rich...there seems to be no rhyme or reason to it at all.
The stock MAF on our cars is good to well over 500rwhp, it will definitely not hold you back!
Old 12-07-2006, 10:39 AM
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Originally Posted by Justin00SS
I would say get a dyno without that hpp3 in there. I made my car run like crap. So did the granatelli maf.

I sold both ofr $100 bucks on here. My car felt faster and I got better gas mileage.

20mpg > 12-10mpg

I mean the only thing i really wanted it for was for the fans and the gears....and i tuned it for 93 octane...should i untune that? Should i just sell the granatelli also?
Old 12-07-2006, 10:46 AM
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Originally Posted by fastest94v6
I mean the only thing i really wanted it for was for the fans and the gears....and i tuned it for 93 octane...should i untune that? Should i just sell the granatelli also?
I would and take the "93 tune" out. Thats what I did. It doesn't make you produce any more power. **** man look at my numbers. I'm on stock tune w/ bolt-ons. You don't need the "93 tune" from the hpp3.
Old 12-07-2006, 02:13 PM
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yea...good numbers, take a picture of the graph so we know if it's true, lol jk but yea i think you should be making larger numbers....go to a place that has a dynotech
Old 12-07-2006, 02:18 PM
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Originally Posted by fastest94v6
I mean the only thing i really wanted it for was for the fans and the gears....and i tuned it for 93 octane...should i untune that? Should i just sell the granatelli also?
I wouldn't be shocked if you gained power with a stock, descreened MAF....



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