Did the PE mod and my car sounds the same..

E90X888 · 05-27-2020, 02:42 PM

Hey everyone,

Wanted to get some feedback from anyone who’s done the PE mod on their car. Just got it done this morning, I drive a 09’ E90 335XI. Got a local shop to do it, they’ve done a ton of them. Picked up my car to find it sounds the exact same as before. My 335 is pretty stock, exhaust is stock everything still in place except the muffler now with the PE mod. I have downpipes on the way. But is my car supposed to sound the same? Did my research and everyone here seems to really enjoy the PE mod. Just really disappointed that it didn’t sound like anything even at higher rpms.

Thanks

type-dRew · 05-27-2020, 02:45 PM

clearly been done wrong or your exhaust is still just too quiet to hear inside the car.

was it done to both sides and all four chambers in the mufflers?

as someone who has done this mod, my advice to anyone doing it, do every other exhaust mod first and then decide if you want to do it

E90X888 · 05-27-2020, 02:59 PM

Quote:

Originally Posted by type-dRew

clearly been done wrong or your exhaust is still just too quiet to hear inside the car.

was it done to both sides and all four chambers in the mufflers?

as someone who has done this mod, my advice to anyone doing it, do every other exhaust mod first and then decide if you want to do it

Yeah it was done to both sides, all chambers. The only thing I can think of, I don’t have the X pipe and It’s got that resonator + primary and secondary cats. They asked if I wanted to do the x pipe as well but I didn’t think I needed to do it. Yeah forsure, I’m hoping with the downpipes it’ll sound better.

CanadianTSi · 05-28-2020, 10:03 AM

Doing all 4 pipes basically makes an over complicated straight pipe which should be quite noticeable. I did the 2 straight through pipes on mine and at idle and cruise it was quite but under WOT it was definitely louder.

cgbimmer · 05-29-2020, 07:53 AM

hey that resonator should have been replaced with xflow pipe ..are you sure they cut out resonator in drivers side exhaust and welded strait pipe in is pita

stewbets · 05-29-2020, 03:10 PM

Quote:

Originally Posted by E90X888

Hey everyone,

Wanted to get some feedback from anyone who’s done the PE mod on their car. Just got it done this morning, I drive a 09’ E90 335XI. Got a local shop to do it, they’ve done a ton of them. Picked up my car to find it sounds the exact same as before. My 335 is pretty stock, exhaust is stock everything still in place except the muffler now with the PE mod. I have downpipes on the way. But is my car supposed to sound the same? Did my research and everyone here seems to really enjoy the PE mod. Just really disappointed that it didn’t sound like anything even at higher rpms.

Thanks

I only gutted my driver's side muffler and wired the exhaust flap to a switch on my dash. I noticed a substantial difference in volume with just the one side opened up. Something doesn't seem right to me if you can't tell a difference.

thurstonhowelltha3rd · 05-31-2020, 09:07 AM

Did you witness the job being done? Did they take pics of the opened muffler? Are there weld marks on the bottom side of the mufflers?

05-27-2020, 02:42 PM	#1
E90X888 New Member 0 Rep 14 Posts Drives: 2009 335xi M sport Join Date: Apr 2020 Location: Canada iTrader: (0)	Did the PE mod and my car sounds the same.. Hey everyone, Wanted to get some feedback from anyone who’s done the PE mod on their car. Just got it done this morning, I drive a 09’ E90 335XI. Got a local shop to do it, they’ve done a ton of them. Picked up my car to find it sounds the exact same as before. My 335 is pretty stock, exhaust is stock everything still in place except the muffler now with the PE mod. I have downpipes on the way. But is my car supposed to sound the same? Did my research and everyone here seems to really enjoy the PE mod. Just really disappointed that it didn’t sound like anything even at higher rpms. Thanks
	Appreciate 0 Tweet Quote

05-27-2020, 02:45 PM	#2
type-dRew Major 641 Rep 1,245 Posts Drives: 2009 335i xDrive Join Date: Feb 2019 Location: Newport MI iTrader: (0)	clearly been done wrong or your exhaust is still just too quiet to hear inside the car. was it done to both sides and all four chambers in the mufflers? as someone who has done this mod, my advice to anyone doing it, do every other exhaust mod first and then decide if you want to do it __________________ 2009 335i xDrive AT / 177k+ miles PSP 750ic / Fuel-It! Stage 1 / BMS CP / Sutphin Tuning / RFP E50 11.61 @ 117.5 New setup; Covid 19Ts on RFP 93 + ARM inlets, dp, VTT cp and PSP outlets
	Appreciate 0 Quote

05-28-2020, 10:03 AM	#4
CanadianTSi Captain 207 Rep 602 Posts Drives: 2014 535 xDrive Diesel Join Date: Feb 2007 Location: Alberta iTrader: (0)	Doing all 4 pipes basically makes an over complicated straight pipe which should be quite noticeable. I did the 2 straight through pipes on mine and at idle and cruise it was quite but under WOT it was definitely louder.
	Appreciate 1 feuer4275.50 Quote

05-29-2020, 07:53 AM	#5
cgbimmer 2007 335xi 31 Rep 69 Posts Drives: 2007 335xi blue Join Date: Mar 2015 Location: bloomfield ct iTrader: (0)	hey that resonator should have been replaced with xflow pipe ..are you sure they cut out resonator in drivers side exhaust and welded strait pipe in is pita __________________ 2007 335xi Daw stage 2 old wheel custom 2.25 relocation inlets vrsf alum outlets.Vrsf 5'' stepped intercooler.stage 2 bucket lpfp.BQ tune xhp stage 3 tranny flash.vrsf downpipes modified 3in exhaust.ER charge pipe tial bov.Custom oil cooler..cic retrofit.koni shocks h@r sport spring staggered conti tir
	Appreciate 0 Quote

05-31-2020, 09:07 AM	#7
thurstonhowelltha3rd Private First Class 36 Rep 167 Posts Drives: n54 335i Join Date: Oct 2015 Location: Murrieta, CA iTrader: (0)	Did you witness the job being done? Did they take pics of the opened muffler? Are there weld marks on the bottom side of the mufflers?
	Appreciate 0 Quote