5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.

really need help no power/ exhaust broken!

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Old Jul 31, 2010 | 08:26 AM
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really need help no power/ exhaust broken!

hey guys my 3rd part of the exhaust broke the one that leads to under the bumper. So now my exhaust smells and is really anoying. (its a 5 speed 00) i noticed when i ride the gears it get really loud and sounds as if its going perfectly up to redline, then soon as i hit 3.5 thousand rpms it feels like i lost 50hp instantly and then it takes so long to get it to 6k. do yoiu think the back flow from my broken 3rd piece connection to the exhaust is causing this?? if i keep the gas pedal really steady i wont feel it but when i sink my foot to thew gas its very noticible. thanks!!
Old Jul 31, 2010 | 08:13 PM
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Old Jul 31, 2010 | 08:40 PM
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the correct name for the part that broke is the cat back. yes there is a very high chance that the loss in power is because of the loss in back pressure.
The smell should not have changed at all. The cats (if you have them) should remove the odors
Old Jul 31, 2010 | 09:04 PM
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Originally Posted by Specd_out
the correct name for the part that broke is the cat back. yes there is a very high chance that the loss in power is because of the loss in back pressure.
The smell should not have changed at all. The cats (if you have them) should remove the odors
It's not backpressure that he lost that's affecting his performance.... it's exhaust gas velocity that's directly affecting his scavenging ability......that makes the engine perform less than stellar
Old Jul 31, 2010 | 09:11 PM
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sometimes the broken pipes can rest against each other in such a way that inhibits flow. that could explain why it seems choked off at higher rpms.
Old Jul 31, 2010 | 09:15 PM
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pictures please! you can fix your problem 2 or 3 different ways:

1.Oem replacement (Bosal brand @ NAPA)
2. Aftermarket market....Cattman performance, Megan Racing, Greddy
3.Exhaust shop (custom)
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