Pontiac GTO 2004-2006 The Modern Goat

Magnacharger is installed! Dyno results...

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Old 05-04-2005, 04:12 AM
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Default Magnacharger is installed! Dyno results...

So I installed the Magnacharger on Saturday with the help of my buddies from Magnaflow, did the whole install from beginning to end in one day. Install was pretty straightforward, a bit painstaking at times, but it's a true bolt-on kit. No special tools or skills required. The install manual had a couple flaws, but nothing too difficult to figure out. Initial driving of the car felt awesome, the torque was just everywhere, which really helps this heavy pig of a car git up and go. It just keeps pulling and pulling until you chicken out and let off the gas, it's really a badass street setup. Drivability is completely unchanged. It starts up and idles like a stock motor, and behaves perfectly on the street.

On to the dyno. After reading a lot of the posts on ls1gto.com I was worried about heat soak. I had seen people make good numbers when everything is cold then watch the power go to ***** when it starts warming up. Before making the first dyno run we let it warm up all the way, I didn't want any dyno queen numbers (nothing worse than having to explain why the mph doesn't match the dyno numbers). I wanted to see how much of an issue the heat soak really was so we did three runs back to back with just under four minutes between them, and left the motor running the whole time.

403 rwhp 409 rwtq



You can see here that the numbers are very consistent across all three runs, and it appears that the heat soak power loss is negligible if any. I would expect to lose a few horses between runs, even on a naturally aspirated motor.

Next step: Magnaflow cat-back. I was always impressed with the stock exhaust, so I wasn't expecting much with the addition of an aftermarket catback. The Magnaflow, however, proved to be a bitchin' addition. Apart from looking badass and sounding mean as hell, the kit is MUCH lighter than the stock catback and actually made good power! Here's a graph of my best run bone stock, then with the Magnacharger, and then with the addition of the Magnaflow catback.

418 rwhp 421 rwtq




Comments?
Old 05-04-2005, 07:59 AM
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Nice power gains with the cat-back.

That is a damn nice torque 'curve', so nice and flat...
Old 05-04-2005, 09:38 AM
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If you don't mind, I was wondering how much all that costs installed. I am comparing packages and it looks like you got very nice results.
Old 05-04-2005, 10:04 AM
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Congrats and welcome to the family!

I knew you would like it.
Old 05-04-2005, 10:50 AM
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Dizamn!
Old 05-04-2005, 11:32 AM
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If you are using the program that came with the kit. I would highly recommend a custom tune. You could get 20-30 rwhp and tq out of it. Gotta love the table top tq curve.
Old 05-04-2005, 12:06 PM
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Originally Posted by Qwik03
I knew you would like it.
You only knew that because it was your car that made me want a MagnaCharger!

Speaking of which, Brandin do you have a Hi-Res version of this image?
Old 05-04-2005, 12:12 PM
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Now let's see some track times!!!
Old 05-04-2005, 12:12 PM
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quicksilverado I think you're right, there's probably some more power here with a custom tune. I think the MagnaCharger tune is a bit on the "safe" side.


Originally Posted by YlwGTO4m3
If you don't mind, I was wondering how much all that costs installed. I am comparing packages and it looks like you got very nice results.
I think the kit retails for $5995, and you should definitely be able to do the install yourself. Keep in mind that the price sounds like a lot compared to other kits, but it comes with EVERYTHING you need, ie intercooler, upgraded fuel rails with bigger injectors, programmer with custom tune, intake plumbing with K&N, etc, etc.
Old 05-04-2005, 12:27 PM
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Originally Posted by xp3nd4bl3
You only knew that because it was your car that made me want a MagnaCharger!

Speaking of which, Brandin do you have a Hi-Res version of this image?
yeah we have the original high res shot

remail rich with what you want and he will send it over

Why?
Old 05-04-2005, 01:53 PM
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Originally Posted by Qwik03
yeah we have the original high res shot

remail rich with what you want and he will send it over

Why?

That makes a great desktop photo.
Old 05-04-2005, 03:04 PM
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Originally Posted by BlownChevy
That makes a great desktop photo.
That's why I wanted it.
Old 05-04-2005, 03:20 PM
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Dang, 6000 is a bit high for a roots blower isn't it???
Old 05-04-2005, 05:19 PM
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Originally Posted by Relativelyfast
Dang, 6000 is a bit high for a roots blower isn't it???
Forced Induction aint cheap. $6K for the complete kit is a bargain if you ask me, I am still strongly considering the Magna myself if i don't sell the GTO...
Old 05-04-2005, 06:06 PM
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I'm in the same boat as you BlueSix, That 2500 rpm 400 TQ is very appealing. I'm having no luck trying to sell the GOAT so I might as well blow it up! Even thogh the Procharger has better number hp wise, cheaper, more potential theres something about the Maggies thats attracting me to it. How was the hood clearence? any pics?
Old 05-04-2005, 06:49 PM
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have fun with your magnacharger, I know mine has been the best thing I have done to any vehicle I have owned. BTW, my dad's I/C magnacharged 04 A4 vette went 11.09@123 last weekend
Old 05-04-2005, 08:17 PM
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Originally Posted by 1Blown04
have fun with your magnacharger, I know mine has been the best thing I have done to any vehicle I have owned. BTW, my dad's I/C magnacharged 04 A4 vette went 11.09@123 last weekend
Wow that's flying!

wrench, no hood clearance issues, in fact the stock STB fits over the blower.
Old 05-05-2005, 12:35 AM
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I think Brandin's avatar would make a better desktop photo.....but that's just me....

So, time for HP tuners on the Goat?
Old 05-05-2005, 10:20 AM
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How is it driving?
Old 05-05-2005, 10:54 AM
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Originally Posted by TITAN
I think Brandin's avatar would make a better desktop photo.....but that's just me....

So, time for HP tuners on the Goat?
It is just you!

All of you!!!


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