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vijen6 · 06-03-2012, 10:39 PM

Finally got everything installed .. no CEL yet ( knock on wood ) so I take that as a sign that nothing major was screwed up .. in my 5 minute test drive the car definitely feels faster. I'm definitely happy with the performance increase.

Three things though I'm not entirely happy with ... and some questions ( in bold ).

1. Mounting points

As is the NHP system mount doesn't connect to the exhaust mount on the bottom of the transmission that the OEM system uses. It also doesn't connect the midpipe flanges to the muffler flanges. The second step is said to be optional by creating DIY mounts because the system is sturdy enough. I feel that its not since I can get the system to vibrate by shaking the cans by hand ( I think this is the reason for complaint #2 - vibrations ) .

I'll have to create some mounts, but feel that for the retail price of the exhaust, this should have been an included optional part. Or at least something that can be purchased as an 'accessory'.

2. Vibration / Exhaust note @ low end range

I wont elaborate much here until I get a video up of the exhaust note .. but there is definitely something funky at the lower RPM ( 1200-1600 )range. Strange that it sounds just fine ( perfect actually ) at slightly higher RPM ( 3000-3500 ). Is it possible something I messed up in the install process that screwed up the exhaust note and introduce a vibration at the lower RPM and not higher RPM ?

A bit annoying since one of the reason I went NHP instead of 'ebay generic' is to avoid exhaust vibrations / drooning.

3. Burning odor

Car now emit a very strong burning odor. My GF actually poked her head in the garage to check if everything was okay once I turned on the car because she smelled something burning. To be fair I'm running catless midpipe so I do expect more smell .. but IMHO, this is a bit excessive. Strange because I didn't use any sealant / grease / oil during the install that could need to be 'burned off'.

This burning smell really worries me most since I've heard of issues with the passenger side header causing the power steering line to catch fire. I don't know where the power steering line is .. but I triple checked for hose in the vicinity of the passenger side header and didn't see anything too close. Can someone help point me to where this line is so I can stop driving around town with a fire extinguisher riding shotgun ?

Thanks!

06-03-2012, 10:39 PM	#9
vijen6 Registered User Join Date: Jul 2006 Location: san jose Posts: 225	Finally got everything installed .. no CEL yet ( knock on wood ) so I take that as a sign that nothing major was screwed up .. in my 5 minute test drive the car definitely feels faster. I'm definitely happy with the performance increase. Three things though I'm not entirely happy with ... and some questions ( in bold ). 1. Mounting points As is the NHP system mount doesn't connect to the exhaust mount on the bottom of the transmission that the OEM system uses. It also doesn't connect the midpipe flanges to the muffler flanges. The second step is said to be optional by creating DIY mounts because the system is sturdy enough. I feel that its not since I can get the system to vibrate by shaking the cans by hand ( I think this is the reason for complaint #2 - vibrations ) . I'll have to create some mounts, but feel that for the retail price of the exhaust, this should have been an included optional part. Or at least something that can be purchased as an 'accessory'. 2. Vibration / Exhaust note @ low end range I wont elaborate much here until I get a video up of the exhaust note .. but there is definitely something funky at the lower RPM ( 1200-1600 )range. Strange that it sounds just fine ( perfect actually ) at slightly higher RPM ( 3000-3500 ). Is it possible something I messed up in the install process that screwed up the exhaust note and introduce a vibration at the lower RPM and not higher RPM ? A bit annoying since one of the reason I went NHP instead of 'ebay generic' is to avoid exhaust vibrations / drooning. 3. Burning odor Car now emit a very strong burning odor. My GF actually poked her head in the garage to check if everything was okay once I turned on the car because she smelled something burning. To be fair I'm running catless midpipe so I do expect more smell .. but IMHO, this is a bit excessive. Strange because I didn't use any sealant / grease / oil during the install that could need to be 'burned off'. This burning smell really worries me most since I've heard of issues with the passenger side header causing the power steering line to catch fire. I don't know where the power steering line is .. but I triple checked for hose in the vicinity of the passenger side header and didn't see anything too close. Can someone help point me to where this line is so I can stop driving around town with a fire extinguisher riding shotgun ? Thanks!