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Old 01-05-2008, 03:12 PM
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Default downpipe options

Hi everyone,
I have a 2006 monte carlo ss with the k&n cai, magnaflow exhuast, and diablo tuner. I am looking into putting on a downpipe, but I am not sure what route i should go. I see a lot of people using the hogan pipe, but at $300.00 for the hi-flow cat pipe, i was wondering if there are any cheaper alternatives. Also, is this mod worth it for the hp and torque increase? Let me know what you'd recommend.

Thanks,
Shaun
Old 01-05-2008, 04:29 PM
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Not aware if anyone has used anything other than the Hogan one. As far as hp/tq I'd imagine you might lose a little more low end torque but you'll gain in the upper rpm range.
Old 01-05-2008, 05:42 PM
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First off welcome to the fourm.

Second, Do a search...!!! There are more then 3-4 topics on downpipes that we use, like or do not like

As for the Hogan DP with a cat, its a good choice, but you do lose some TQ, but again you do gain some HP.
Old 01-05-2008, 06:29 PM
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Does anyone know if the Random Technology one will work. I was looking at 3800performance.com and the site says this one will work on a 2000 - present Monte Carlo.
http://www.3800performance.com/Merch...oduct_Count=13

[IMG][/IMG]

Compared to the Hogan one I don't think it will fit.
Old 01-05-2008, 06:43 PM
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2000-2005 Monte Carlo with L38 and L67 motors only.

Again Hogan is the only one that makes a true LS4 downpipe.
Old 01-06-2008, 06:43 AM
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go to wbodystore - I have there 3 inch downpipe and love it. 109.00!


http://www.wbodystore.com/grandprix/...-v8-p-219.html
Old 01-06-2008, 01:11 PM
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it looks like adding the cat is what ramps up the price on either unit. I have to deal with emissions testing, so I'm in the same boat.
Old 01-06-2008, 01:17 PM
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07gxpgray, did you buy the weld in, or did you go with the bolt on. If so, how much did it cost to install?
Old 01-06-2008, 01:18 PM
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Per Kurt @ Hogan:

There is very small difference in sound when you go with the magnaflow high flow cat vs a straight pipe.

I would just get the Hogan downpipe with high flow cat. 409 Stainless Steel and he backs his products up.
Old 01-06-2008, 01:42 PM
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If I ever have to take the car in for warranty work, would you recommend putting the stock dp back on. I'm guessing that if I go with the catless one i would have to, but if its the high-flow one i could just leave it on.
Old 01-06-2008, 01:56 PM
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There are laws that prevent dealers from trying to screw you over.

High flow cat is fine, most "GOOD" dealers dont even care.
Old 01-06-2008, 02:58 PM
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I have the hogan down pipe with magnaflow cat. Great product! I went from running 13.8 et's to 13.4 to 13.5 after installing the down pipe. You will get a check engine code though and will need to use a tuner or custom eec file to get rid of it. Diablo made me a custom file that got rid of the code.
Old 01-06-2008, 08:00 PM
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Originally Posted by supercatxr7
I have the hogan down pipe with magnaflow cat. Great product! I went from running 13.8 et's to 13.4 to 13.5 after installing the down pipe. You will get a check engine code though and will need to use a tuner or custom eec file to get rid of it. Diablo made me a custom file that got rid of the code.
Hogan makes a great product, I have their 3" race DP and it improved my times as well....definitely a good purchase.
Old 01-06-2008, 08:44 PM
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Race DP? As in no cat?


Aren't you taking a HUGE risk, especially living in California?
Old 01-06-2008, 10:38 PM
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Thats Nacho for ya.

Nothing but love ...!!!!
Old 01-06-2008, 10:46 PM
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Originally Posted by Corny40
Race DP? As in no cat?


Aren't you taking a HUGE risk, especially living in California?
No matter what in Cali, it is illegal to move your stock cat at all. So might as well just get the one with no cat.
Old 01-06-2008, 10:48 PM
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Originally Posted by Corny40
Race DP? As in no cat?


Aren't you taking a HUGE risk, especially living in California?
Car passes SMOG on my conservative tune....stock cat is gutted (shush)....hehehe. I don't really like laws huh?



Originally Posted by Taz34SS
Thats Nacho for ya.

Nothing but love ...!!!!
Thanks bro....I really abide the majority of the laws...
Old 01-06-2008, 10:50 PM
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Who cares about them, they are never around when we need them.

Super Nacho he here.
Old 01-06-2008, 10:54 PM
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Originally Posted by Taz34SS
Thats Nacho for ya.

Nothing but love ...!!!!
Originally Posted by Taz34SS
Who cares about them, they are never around when we need them.

Super Nacho he here.
Hey....uhh but i PM'ed you!
Old 01-07-2008, 03:08 AM
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Originally Posted by Nacho SS
Car passes SMOG on my conservative tune....stock cat is gutted (shush)....hehehe. I don't really like laws huh?



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