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Magnaflow 16708 correct for 2002 Impala
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Zoopa
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PostPosted: Mon Jul 11, 2011 3:02 pm    Post subject:  Magnaflow 16708 correct for 2002 Impala Reply with quote

Hi All, Great forums.

I have an exhaust leak on my 2002 Impala. I've resisted temptation to upgrade exhaust for a long time due to legacy security lockout problems on W-Body - finally fixed. I can no longer locate an GMPP exhausts for sale. I understand that it was manufactured by Magnaflow. Can someone please confirm whether the Magnaflow 16708 part fits on an 02 Impala with the 3.8 liter engine. Thanks in advance.
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gg05impala
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PostPosted: Mon Jul 11, 2011 3:34 pm    Post subject:   Reply with quote

same question, but for the 3.4 engine.

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Brigoyanks
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PostPosted: Mon Jul 11, 2011 8:39 pm    Post subject:  Re: Magnaflow 16708 correct for 2002 Impala Reply with quote

Zoopa wrote:
Hi All, Great forums.

I have an exhaust leak on my 2002 Impala. I've resisted temptation to upgrade exhaust for a long time due to legacy security lockout problems on W-Body - finally fixed. I can no longer locate an GMPP exhausts for sale. I understand that it was manufactured by Magnaflow. Can someone please confirm whether the Magnaflow 16708 part fits on an 02 Impala with the 3.8 liter engine. Thanks in advance.


http://www.jegs.com/i/Dynomax/289/19363/10002/-1

get a different exhaust then, i have the one above and i love it not too loud and not quiet when you get on it

and the exhausts for the impala from years 2000-2005 are the same no matter 3400 or 3800 or 3800 supercharged as long as they are catback
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ZSPOT
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PostPosted: Tue Jul 12, 2011 11:07 am    Post subject:   Reply with quote

http://www.youtube.com/watch?v=oBfTb0Ig-E8

Read the comments.

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VladdyLS
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PostPosted: Tue Jul 12, 2011 4:44 pm    Post subject:   Reply with quote

I have this exhaust on my 2001 3.8 and i love it, deep growl at low rpm and very little drone on the highway (i didn't take the resonator out i have seen people that have and its very raspy)
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Zoopa
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PostPosted: Mon Jul 18, 2011 10:28 pm    Post subject:   Reply with quote

I ordered the Magnaflow exhaust over the weekend. I ordered the extra exhaust hanger and a new flange gasket too. They use a lot of road salt in winter and I may end up keeping the car for another ten years. It amazes how much use I have got out of this and how quiet and comfortable it still is.

I ordered the ultra premium brakes from Raybestos too. The last set of ro
tors warped within 10k miles. Hope these will last longer. Will let you guys know how upgrades go.
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IffyG
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PostPosted: Mon Jul 18, 2011 10:37 pm    Post subject:   Reply with quote

Can you post pictures of what you get? I'm curious to see how this kit compares to the GMPP exhaust.

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gg05impala
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PostPosted: Mon Jul 18, 2011 11:05 pm    Post subject:   Reply with quote

As iffy said, please post about what you think and a video of sound too. Im in the market for a dual exhaust system, and i want to make a good choice now that the GMPP kit is gone

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gg05impala
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PostPosted: Mon Jul 25, 2011 2:23 am    Post subject:   Reply with quote

any updates? I want an exhaust set up very soon, but want to see how this compares to the GMPP.

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Audio: Kicker 1000.1zx, Kicker 12" L5 x2, Kicker 350.4, Pioneer TSD1602R x2, JVC xg-700, custom tuned box 33.8hz
Performance - lead foot in my 3.4L is all I have
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Zoopa
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PostPosted: Mon Aug 08, 2011 3:47 pm    Post subject:   Reply with quote

I ordered the Magnaflow 16708 for my '02, 3.8 liter with 120k. I've had the car since new and I've wanted to replace the exhaust with the GMPP version. I had a leak in the resonator pipe, and it was too hard to get out of state dealers to ship the GMPP exhaust. I didn't want to go to a local shop to get an aluminum system, I live in Chicago suburbs and they use a lot of salt in the winter. Maganflow is the manufacturer for the GMPP exhaust that is no longer available, and the warranty is superior - lifetime versus 12mos. I payed ~$590 through Amazon.com including shipping.

I asked my mechanic to weld it together rather than use the clamps. The exhaust fit fine. I purchased the extra exhaust hanger and a new exhaust flange gasket. The car looks better too, obviously.

My car seems a little quicker, not sure if this is an illusion or a result of replacing the transmission actuator body springs because I was previously having harsh shifts from 1 to 2, and 2 to 3.

The car is actually louder than it was with the exhaust leak. It sounds nice at idle and during wide open throttle, but the droning noise once the car is up to speed is excessive to me. I think a better name is "Magnadrone." I would not agree with GM that the extra noise is "palatable." The constant exhaust drone noise from the rear is annoying...except at WOT.

I've got two kids. Suddenly, my one year old is having trouble sleeping the car. Even if this wasn't an issue, the droning is annoying. I prefer cars with manual transmissions. The exhaust drone is because the transmission is trying to maintain the cars speed; its not a case of nice noises coming from the engine bay, which in some cars is a thrilling sound. I'm currently looking at insulating the trunk and maybe the rear footwell with Dynamat, but I'm not sure that it will help with the extra noise that the exhaust drone introduces.

So my review is mixed. Looks fantastic. Sounds great at idle and WOT. Sounds from cruising around is annoying.
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IffyG
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PostPosted: Mon Aug 08, 2011 3:49 pm    Post subject:   Reply with quote

Zoopa wrote:
Sounds great at idle and WOT. Sounds from cruising around is annoying.


I suppose that confirms that this is not a suitable replacement for those seeking a GMPP kit. No one with the GMPP kit complains about exhaust drone while cruising.

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ZSPOT
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PostPosted: Mon Aug 08, 2011 4:36 pm    Post subject:   Reply with quote

IffyG wrote:
Zoopa wrote:
Sounds great at idle and WOT. Sounds from cruising around is annoying.


I suppose that confirms that this is not a suitable replacement for those seeking a GMPP kit. No one with the GMPP kit complains about exhaust drone while cruising.

Well,....

I helped spacewalker install a p-log, coated crossover, 3" ZZP DP and a GMPP one Saturday. Sounded awesome,.. but this thing was almost unbearable inside the cabin. The drone was aweful. We moved it way from any pinch welds and adjusted the mufflers further back a tad, and nothing helped. That was the first time I've ever heard the GMPP that with that bad of drone. I'm guessing it might have been caused from the ZZP DP, but I can't say for sure. I'm on my second GMPP exhaust, and both sounded exactly the same even though they had different muffler designs. Confused

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Grape
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PostPosted: Mon Aug 08, 2011 4:43 pm    Post subject:   Reply with quote

Z, the DP does change the tone of the exhuast pretty noticeably
but runnin the DP and exhaust is prob much more tolerable than if you add the plog to that.....





damn I miss my headers

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gg05impala
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PostPosted: Mon Aug 08, 2011 5:07 pm    Post subject:   Reply with quote

looks like i will still seek for the closest thing to a GMPP kit.

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Audio: Kicker 1000.1zx, Kicker 12" L5 x2, Kicker 350.4, Pioneer TSD1602R x2, JVC xg-700, custom tuned box 33.8hz
Performance - lead foot in my 3.4L is all I have
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IffyG
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PostPosted: Mon Aug 08, 2011 5:11 pm    Post subject:   Reply with quote

ZSPOT wrote:

I helped spacewalker install a p-log, coated crossover, 3" ZZP DP and a GMPP one Saturday. Sounded awesome,.. but this thing was almost unbearable inside the cabin. The drone was aweful.


Very interesting. I'll have to see what happens to my car when I get the DP and powerlog on in the near future. I'm the poster child for upgrade procrastination. Laughing

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