Jeep SRT8 Dynos 355 rwhp - Cherokee SRT8 Forum
WK1 General Performance Discussion If you are planning on modifying your Jeep Grand Cherokee SRT8 with a performance enhancing modification, this is the section to post about it.

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post #1 of 31 (permalink) Old 03-06-2006, 04:11 PM Thread Starter
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Jeep SRT8 Dynos 355 rwhp

I will post the dyno sheet tomorrow. It looks like the Jeep SRT8 makes about 10 rw hp less than the 300/Magnum/Charger.

Let the mods begin.......
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post #2 of 31 (permalink) Old 03-06-2006, 05:22 PM
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Re: Jeep SRT8 Dynos 355 rwhp

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Originally Posted by John Hennessey
I will post the dyno sheet tomorrow. It looks like the Jeep SRT8 makes about 10 rw hp less than the 300/Magnum/Charger.

Let the mods begin.......
That was on an AWD dyno right? Did you take into account that 5-10% of the power is directed to the front wheels? Just asking...
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post #3 of 31 (permalink) Old 03-06-2006, 06:46 PM
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Re: Jeep SRT8 Dynos 355 rwhp

Lets see how these baby react to mods
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post #4 of 31 (permalink) Old 03-06-2006, 07:38 PM Thread Starter
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Re: Jeep SRT8 Dynos 355 rwhp

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Originally Posted by BigHemi
That was on an AWD dyno right? Did you take into account that 5-10% of the power is directed to the front wheels? Just asking...
WE DISCONNECTED THE FRONT DRIVESHAFT AND DYNO'D IN RWD ON OUR DYNOJET.
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post #5 of 31 (permalink) Old 03-06-2006, 08:58 PM
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Re: Jeep SRT8 Dynos 355 rwhp

DC claims the reduced HP on the Jeep is due to the exhaust.....
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post #6 of 31 (permalink) Old 03-07-2006, 06:45 AM Thread Starter
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Re: Jeep SRT8 Dynos 355 rwhp

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Originally Posted by tangled up in BLUE
DC claims the reduced HP on the Jeep is due to the exhaust.....
i would agree with them.
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post #7 of 31 (permalink) Old 03-07-2006, 10:42 AM
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Re: Jeep SRT8 Dynos 355 rwhp

So who do you guys think will be the first company will be to produce an after-market exhaust? I have contacted Borla and Zoomers to inquire where they are at with systems for the GC SRT8 and haven't gotten a response yet. Anyone have experience with either of these two products on DC vehicles?

2006 GCSRT8 Black
2003 Infiniti G35 Coupe 6-M (SOLD )
2006 Honda Civic Coupe - lightly modded-wife's ride
96 HD FLSTN
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post #8 of 31 (permalink) Old 03-07-2006, 11:52 AM
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Re: Jeep SRT8 Dynos 355 rwhp

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Originally Posted by BahnBlastR
So who do you guys think will be the first company will be to produce an after-market exhaust? I have contacted Borla and Zoomers to inquire where they are at with systems for the GC SRT8 and haven't gotten a response yet. Anyone have experience with either of these two products on DC vehicles?
I'll have dyno numbers (and video) on a system I'm getting done at a custom exhaust shop here in South Florida in two weeks. It will be a fraction of the cost with high quality materials. He'll also use any muffler/resonator system you want.

This guy currently packages SRT-4 systems for shipment all over the US, and has very reasonable prices. Don't jump on anything yet till I at least get #'s before and after his work and a final price.
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post #9 of 31 (permalink) Old 03-07-2006, 12:29 PM
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Re: Jeep SRT8 Dynos 355 rwhp

im sure magnaflow, borla will be making exhausts real soon
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post #10 of 31 (permalink) Old 03-07-2006, 03:07 PM Thread Starter
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Re: Jeep SRT8 Dynos 355 rwhp

we deleted the rear mufflers and did a cold air kit and picked up 16 rw hp and 20 rw tq (371 rw hp and 375 rw tq). ported heads and torque converter go on next.
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