|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Search | Today's Posts | Mark Forums Read |
|
BMW 3-Series (E90 E92) Forum
>
The Half PE Mod [Video]
|
|
11-24-2019, 06:23 PM | #1 |
Second Lieutenant
20
Rep 225
Posts |
The Half PE Mod [Video]
It's the half PE mod because only the driver's side muffler has been modified.
Inside the muffler, both resonator and perforated pipe were replaced with straight pipes, all exhaust packing re-used. With the exhaust flap open the car becomes significantly louder, and with the exhaust flap closed all exhaust is routed through the untouched passenger side muffler resulting in a stock-like, quieter sound. I purchased a valve controller in order to allow me to switch at the click of a button. Flap closed it sounds exactly like when you first got your car. Quiet, no cabin drone, barely noticeable to those around you. Flap open at idle you can actually hear the turbo from the exterior. In the cabin, the exhaust is noticeable after 2.3K RPM and after that it is very obvious your exhaust is modified. No rattles, no obnoxious drone, just a hum. Very pleasing to listen to while daily driving. Outside the car the exhaust is noticeable at every RPM, but becomes significantly (not obnoxiously) louder passed that 2.3K mark. At WOT my friends have said that it sounds absolutely amazing. It is a notch or two quieter than a full muffler delete. Half PE Mod- $185 Valve controller- $90 I love this setup because you get to decide when you want the car quiet or loud. Soon I will flash with MHD and show how the car sounds flap open with burbles. I know the wind is annoying, the next video will be without it. |
11-24-2019, 07:08 PM | #2 |
Captain
214
Rep 988
Posts |
Question about these valve controllers-
I recall my old 335i (N54) stock valve behavior upon start up was that the valve stayed open for a split second before closing (as if the engine had to build vacuum). Is this the case with the controller? Or can the valve be closed before the engine starts, avoiding a split second of open valve operation
__________________
MHD | BMS | VRSF | APEX | RECARO | TC Kline | BERK | Turner Motorsport | Eibach | BMW Performance
|
Appreciate
0
|
11-24-2019, 08:26 PM | #3 | |
Second Lieutenant
20
Rep 225
Posts |
Quote:
|
|
Appreciate
0
|
11-25-2019, 01:21 PM | #4 | |
Major
641
Rep 1,245
Posts |
Quote:
__________________
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
|
12-06-2019, 09:52 AM | #6 |
Second Lieutenant
20
Rep 225
Posts |
It has been worth every penny. I only close the valve on road trips. Even above 2K there is no rattle, weird vibrations, drone, etc. Having the valve has just made it easier to control the sound of the car for different situations i.e neighborhood, kids in car, long drives. Now it sounds really good, but I bet with a downpipe it will sound even better.
|
Appreciate
0
|
12-07-2019, 07:33 PM | #7 | |
New Member
0
Rep 5
Posts |
Quote:
Im surprised there's no drone! Edit: When do you plan on getting the tune to add in the burbles - would love to see a video of it too. |
|
Appreciate
0
|
12-10-2019, 08:14 PM | #8 | ||
Second Lieutenant
20
Rep 225
Posts |
Quote:
|
||
Appreciate
0
|
01-14-2020, 02:38 PM | #9 |
New Member
0
Rep 5
Posts |
Would you honestly have been fine without doing the controller? Like would you say its not too loud even when cruising the highway or something. Thanks again lol.
|
Appreciate
0
|
01-14-2020, 05:34 PM | #10 |
New Member
2
Rep 5
Posts |
I did the same thing to my car when I had it. Exhaust is otherwise stock (cats are all there) except for the PE mod on the driver side. Here's a clip with MHD burbles at medium aggressiveness. I have idle revs too but only a sound clip no video.
I basically had the valve open all the time. The difference between open and closed is very little inside the car and can really only be noticed when the windows are up and you have no radio on. There's a tiny bit of drone with the valve open, nothing like a muffler delete. Outside of the car there is a noticeable difference between open and closed especially with the burbles. I still have the ExhaustMeister valve controller which works just like the Valvetronic one but a bigger box. PM me if you're interested. |
Appreciate
0
|
01-29-2020, 08:58 AM | #11 |
Captain
449
Rep 823
Posts |
I'm all for this idea (I've done something similar on 2 of my cars), but I don't get the appeal in using a wireless controller for the exhaust flap, other than simplifying the install? Why not spend a half hour routing a wire from the solenoid to your dash and have a proper switch? Not only will this be a ton more convenient to operate day-to-day, but it will keep your valve in whatever position you want instead of reverting to some default every startup. It also only costs a couple bucks. Remotes are great for lots of things. I just don't think this is one of them.
|
Appreciate
0
|
04-06-2020, 02:57 PM | #12 |
Second Lieutenant
20
Rep 225
Posts |
|
Appreciate
0
|
06-18-2020, 11:09 PM | #14 | |
Captain
433
Rep 780
Posts |
Quote:
|
|
Appreciate
0
|
06-18-2020, 11:13 PM | #15 |
Captain
433
Rep 780
Posts |
Why did you do the "half PE" in stead of just cutting off the muffler and just replacing the pipe? (Basically the same thing you have minus the muffler body and packing.) It seems like it would be less work than opening and rewelding the muffler shell.
|
Appreciate
0
|
06-19-2020, 06:09 AM | #16 | ||
Second Lieutenant
20
Rep 225
Posts |
Quote:
Quote:
https://valvetronic.com/collections/...muffler-bypass Now that you see it you can imagine how much more that would cost. Throw in the cost of the controller and now you're close to a grand. |
||
Appreciate
0
|
06-19-2020, 02:55 PM | #17 | |||
Captain
433
Rep 780
Posts |
Quote:
|
|||
Appreciate
0
|
06-19-2020, 03:05 PM | #18 |
Second Lieutenant
20
Rep 225
Posts |
I guess people really liked the Perf mufflers so the PE mod is the way to mimic. But in my case i straight piped both inner and outer pipes, not just the outer. So the muffler would still serve a purpose in either set up because there is still a perforated pipe that allows sound to go into the muffler packing and change the sound. Idk if you have kids or frequent family in the car but having a valve period is perfect.
|
Appreciate
0
|
06-19-2020, 03:31 PM | #19 | |
Captain
433
Rep 780
Posts |
Quote:
I like the idea of ditching the muffler body entirely, but keeping the valve, like the valvetronic one. And ditching the weight. But was wondering if there's a benefit to replacing the perf pipe. |
|
Appreciate
0
|
06-19-2020, 03:35 PM | #20 | ||||
Second Lieutenant
20
Rep 225
Posts |
Quote:
Quote:
|
||||
Appreciate
0
|
06-19-2020, 03:51 PM | #21 |
Captain
433
Rep 780
Posts |
I wonder if the weight of the muffler body is beneficial in terms of sound? More mass is harder to vibrate. I wonder what happens as far as harmonics (does it get annoying) with the valvetronic...
|
Appreciate
0
|
Bookmarks |
Thread Tools | Search this Thread |
|
|