2.4L Performance Tech 16 valve 172 hp EcoTec with 162 lb-ft of torque

GM Performance Parts Exhaust

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Old 05-23-2007 | 08:50 AM
  #11  
FIRETRUCKHHR06's Avatar
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Update

Ok I talked to my gm rep. and gm has not given any specs. yet. They are worried if they say x amount of hp and you don't get that on your vehicle that it could cause legal issues. (bait and switch) but my rep has an hhr and I trying to tlk him into getting one and getting it dynoed. will keep every one posted.
Old 05-23-2007 | 08:55 AM
  #12  
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Originally Posted by FIRETRUCKHHR06
Ok I talked to my gm rep. and gm has not given any specs. yet. They are worried if they say x amount of hp and you don't get that on your vehicle that it could cause legal issues. (bait and switch) but my rep has an hhr and I trying to tlk him into getting one and getting it dynoed. will keep every one posted.
That's easy, dyno one of each motor and then dyno each with the cat back. List the actual numbers. no worries.

You think each vehicle out there gets the "up to 26 HP with a K&N FIPKII". No one vehicle got that number. That's why the "up to" can be used. For this, use facts since it's for one vehicle.
Old 05-23-2007 | 09:37 AM
  #13  
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Call me stupid, but I still don't get it. If an engine needs a certain amount of back pressure to perform at it's peak, it does not matter where it gets that pressure from. It could be from bends in the pipe or resistance in a muffler, resonator, or cat convertor. The bottom line is that too little or too much back pressure is not good for the Ecotech motor. That said, I have a lake pipe/cut out system on my car (y pipe before my IMCO) and I opened it up for the car show last night. And I swear that my car feels much stronger with it open. So perhaps the car would run better with a muffler that had less back pressure than the IMCO. And mine is beginning to rust. So I am looking forward to seeing more about the Chevy/Borla system. Besides, it looks to be bolt on so you would save on having it installed by a muffler shop (although I would still want to get a y pipe welded into it ).
Old 05-23-2007 | 09:39 AM
  #14  
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Originally Posted by ws91420
If I remember correctly GM has Borla make the performance exhausts for them,
you are correct about that!
Old 05-23-2007 | 09:53 AM
  #15  
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Originally Posted by Lee3333
Call me stupid, but I still don't get it. If an engine needs a certain amount of back pressure to perform at it's peak, it does not matter where it gets that pressure from. It could be from bends in the pipe or resistance in a muffler, resonator, or cat convertor. The bottom line is that too little or too much back pressure is not good for the Ecotech motor. That said, I have a lake pipe/cut out system on my car (y pipe before my IMCO) and I opened it up for the car show last night. And I swear that my car feels much stronger with it open. So perhaps the car would run better with a muffler that had less back pressure than the IMCO. And mine is beginning to rust. So I am looking forward to seeing more about the Chevy/Borla system. Besides, it looks to be bolt on so you would save on having it installed by a muffler shop (although I would still want to get a y pipe welded into it ).
I think you answered your own question...... Just think of this, what kind of muffler does a race or drag car run? Now you need a muffler for the street. The law says so. Don't always believe what you read online.

Guess that includes my post also...
Old 05-23-2007 | 11:20 AM
  #16  
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Lee....I can only say, "ask an engine designer or engineer about back pressure in the Ecotec" ! You may be surprised.
Old 05-23-2007 | 11:36 AM
  #17  
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Originally Posted by FIRETRUCKHHR06
Now GM has a performance exhaust for the 2.2 and 2.4 HHRs.
GM part #19158628
price on gmpartsdirect.com is $578.20
I have not seen specs yet. but will update if i hear anything.
Can anyone determine what the name is, on the muffler? Might help with who makes this cat back system. I tried copying it then enlarging but still couldn't make it out.
Old 05-23-2007 | 11:54 AM
  #18  
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[QUOTE=Snoopy;151612]Can anyone determine what the name is, on the muffler? Might help with who makes this cat back system. I tried copying it then enlarging but still couldn't make it out.[/QUOT

It says "GM PERFORMANCE PARTS"
All the mufflers say the same thing when you order through GM
Old 05-23-2007 | 07:58 PM
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Originally Posted by Snoopy
Can anyone determine what the name is, on the muffler? Might help with who makes this cat back system. I tried copying it then enlarging but still couldn't make it out.
GM performance exhausts are made by BORLA
Old 05-23-2007 | 08:01 PM
  #20  
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Originally Posted by ws91420
GM performance exhausts are made by BORLA
MMMM, Borla By the way, Name:  welcome4.gif
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Size:  5.6 KB to the site!!!


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