CP-E Downpipe rattle, is this normal?

oulaw · 07-10-2011, 09:19 PM

I got CP-E downpipes installed and immediately after leaving the shop fells a minor rattle that came from under th front console area. If there was one bump I would get one rattle THUMP and if multiple bumps it would THUMP THUMP THUMP. I took it back to the shop and they blamed it on the fact that there is no flex-pipe in the down pipe. They tightened everything back up but within a day I got the rattle again.

On top of that, I have some serious engine issue now either a HPFP or turbo failure that happened today and don't know if when I take it in for service will be blamed on the CP-E.

Any advice appreciated!

RnmEvo9 · 07-10-2011, 09:28 PM

Installation error for sure!

I have a set of racelands that has no flex pipe either and I have no rattles or issues with them.

oulaw · 07-10-2011, 09:38 PM

What kind of install error could cause them to rattle? The installer invited me to look under the lift when I brought it back it. All the bolts were tight and I couldnt move the pipe/exhaust by hand.

Zasquatch · 07-11-2011, 07:23 AM

Check the heatsheilds and the entire exhaust tract up to the secondary cats. I have cp-e DPs and have no rattles and a perfect fit.

07-10-2011, 09:19 PM	#1
oulaw Attorney - Will Sue 4 Food 10 Rep 71 Posts Drives: 2008 335i Join Date: Oct 2010 Location: Addison, Texas iTrader: (0)	CP-E Downpipe rattle, is this normal? I got CP-E downpipes installed and immediately after leaving the shop fells a minor rattle that came from under th front console area. If there was one bump I would get one rattle THUMP and if multiple bumps it would THUMP THUMP THUMP. I took it back to the shop and they blamed it on the fact that there is no flex-pipe in the down pipe. They tightened everything back up but within a day I got the rattle again. On top of that, I have some serious engine issue now either a HPFP or turbo failure that happened today and don't know if when I take it in for service will be blamed on the CP-E. Any advice appreciated! __________________ 08' BMW 335i: AA FMIC, Tial BOV, HKS exhaust, Eibach Prokit, Koni FSD Shocks, Stett CAI, Cp-e dp, HK 15/20mm Spacers, H&R Sways, JB4; 95k miles on 10/10/14 w/o issue! 04' 350Z Enthusiast: HKS Exhaust, DC Sports Ceramic Headers, TopSpeed Test Pipes, UR Crank Pulley, Tokico HP Shocks/Springs, Motordyne 5/16 Plenum Spacer, K&N Filter
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07-10-2011, 09:28 PM	#2
RnmEvo9 Banned 252 Rep 1,827 Posts Drives: 2007 335i Join Date: Apr 2011 Location: Pembroke Pines, FL iTrader: (2)	Installation error for sure! I have a set of racelands that has no flex pipe either and I have no rattles or issues with them.
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07-10-2011, 09:38 PM	#3
oulaw Attorney - Will Sue 4 Food 10 Rep 71 Posts Drives: 2008 335i Join Date: Oct 2010 Location: Addison, Texas iTrader: (0)	What kind of install error could cause them to rattle? The installer invited me to look under the lift when I brought it back it. All the bolts were tight and I couldnt move the pipe/exhaust by hand. __________________ 08' BMW 335i: AA FMIC, Tial BOV, HKS exhaust, Eibach Prokit, Koni FSD Shocks, Stett CAI, Cp-e dp, HK 15/20mm Spacers, H&R Sways, JB4; 95k miles on 10/10/14 w/o issue! 04' 350Z Enthusiast: HKS Exhaust, DC Sports Ceramic Headers, TopSpeed Test Pipes, UR Crank Pulley, Tokico HP Shocks/Springs, Motordyne 5/16 Plenum Spacer, K&N Filter
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07-11-2011, 07:23 AM	#4
Zasquatch Captain 37 Rep 708 Posts Drives: '07 BMW 335i Join Date: Sep 2010 Location: CT iTrader: (15) Garage List 2007 BMW 335i [0.00]	Check the heatsheilds and the entire exhaust tract up to the secondary cats. I have cp-e DPs and have no rattles and a perfect fit.
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