What more does MPE exhaust give you more than Stock?

BTWoody · 10-03-2015, 05:56 PM

I was wondering during the week about the MPE exhaust and was thinking about price as well. For an MPE exhaust it is roughly costing you around the region of £2500! But what does that give you?

1. Slightly better sound
2. Subtle boost in HP
3. No Rust
4. Less weight
And so on...

(Bare with me!)

When I open the valves on a stock exhaust system, it is supposed to be straight though bypassing the muffler, but the difference being the stock exhaust has one more catalytic converter than MPE.

So this is the conclusion: Are you just paying for one less Catalytic converter, so if I were to cut off the secondary catalytic converter and weld in a pipe with exact same diameter on stock exhaust, is it basically an MPE? Or am I just a colossal knob!

erind · 10-04-2015, 08:26 AM

Much better sound, tips look awesome.

BTWoody · 10-04-2015, 08:28 AM

Quote:

Originally Posted by erind

Much better sound, tips look awesome.

Yeah some of the reasons why I would love the MPE but I don't think it warrants £2500, maybe in a few years

CanAutM3 · 10-04-2015, 12:27 PM

Better sound
Better looks
Lighter weight

It does not provide a noticible gain in power.

s0ul · 10-04-2015, 12:56 PM

Quote:

Originally Posted by BTWoody

I was wondering during the week about the MPE exhaust and was thinking about price as well. For an MPE exhaust it is roughly costing you around the region of £2500! But what does that give you?

1. Slightly better sound
2. Subtle boost in HP
3. No Rust
4. Less weight
And so on...

(Bare with me!)

When I open the valves on a stock exhaust system, it is supposed to be straight though bypassing the muffler, but the difference being the stock exhaust has one more catalytic converter than MPE.

So this is the conclusion: Are you just paying for one less Catalytic converter, so if I were to cut off the secondary catalytic converter and weld in a pipe with exact same diameter on stock exhaust, is it basically an MPE? Or am I just a colossal knob!

I thought BMW claims that it doesn't give you boost?

schnazzy · 10-05-2015, 11:25 AM

The MPE will probably not give you gain. If there is a change it will most likely be in the -7 to +7hp range based on the HP of the engine. When the tuners with the most HP F80's around say that exhausts like the MPE give your little or not HP, I listen.

If you find any literature from BMW that actually gives you example HP gain let me know.

If some other exhaust doesn't have the cats, this might provide some minor gain. (or potentially loss).

Best bang is a Tune, then downpipes.

BTWoody · 10-05-2015, 11:29 AM

Quote:

Originally Posted by schnazzy

The MPE will probably not give you gain. If there is a change it will most likely be in the -7 to +7hp range based on the HP of the engine. When the tuners with the most HP F80's around say that exhausts like the MPE give your little or not HP, I listen.

If you find any literature from BMW that actually gives you example HP gain let me know.

If some other exhaust doesn't have the cats, this might provide some minor gain. (or potentially loss).

Best bang is a Tune, then downpipes.

yea, I remember when I had my E92, there was a boost with it being NA, but I'm not sure with turbocharged engine?

mike@x-ph.com · 10-05-2015, 11:54 AM

Better sound .

Dont expect any Performance increase with the Performance exhaust

With all the options available for your car, you are definitely overpaying for the performance exhaust. I recommend you look at other options that offer more for less.

If you are looking for more power a tune should be your first option. JB stage 1 is a very popular starting point to the M3/M4 tuning world

BTWoody · 10-05-2015, 11:56 AM

Quote:

Originally Posted by mike@x-ph.com

Better sound .

Dont expect any Performance increase with the Performance exhaust

With all the options available for your car, you are definitely overpaying for the performance exhaust. I recommend you look at other options that offer more for less.

I was actually looking at REMUS, cheaper than MPE and improves sound (not saying stock sounds bad)

mike@x-ph.com · 10-05-2015, 12:50 PM

Quote:

Originally Posted by BTWoody

I was actually looking at REMUS, cheaper than MPE and improves sound (not saying stock sounds bad)

Remus sounds great, Active Autowerke is a new option that became available last week and sounds amazing as well.

Remus

Active Autowerke

rmedeir1 · 10-05-2015, 02:12 PM

Quote:

Originally Posted by erind

Much better sound, tips look awesome.

This and not really anything else.

M3ANOXGREEN · 10-05-2015, 03:41 PM

Quote:

Originally Posted by rmedeir1

This and not really anything else.

and we buy crazy expensive exhausts with little to no gain of hp/tq for what?

G4BR13L · 10-05-2015, 03:47 PM

Quote:

Originally Posted by M3ANOXGREEN

and we buy crazy expensive exhausts with little to no gain of hp/tq for what?

Purely for the exhaust note unless you go for a full system that increases the air flow.

CanAutM3 · 10-05-2015, 03:49 PM

Quote:

Originally Posted by BTWoody

yea, I remember when I had my E92, there was a boost with it being NA, but I'm not sure with turbocharged engine?

BMW did not claim any performance gains for the MPE on the E9X. However, independent shops dynoed it with 4~7hp gains, which is marginal and within test-to-test variation. It is probably similar with the F8X MPE.

BTWoody · 10-05-2015, 03:52 PM

Quote:

Originally Posted by CanAutM3

Quote:

Originally Posted by BTWoody

yea, I remember when I had my E92, there was a boost with it being NA, but I'm not sure with turbocharged engine?

BMW did not claim any performance gains for the MPE on the E9X. However, independent shops dynoed it with 4~7hp gains, which is marginal and within test-to-test variation. It is probably similar with the F8X MPE.

yeah, I had a REMUS sports exhaust on my E92 but I think Remus dynoed it and it was something like 10hp boost. I never noticed the boost in Hp but the sound...

CanAutM3 · 10-05-2015, 03:58 PM

Quote:

Originally Posted by BTWoody

yeah, I had a REMUS sports exhaust on my E92 but I think Remus dynoed it and it was something like 10hp boost. I never noticed the boost in Hp but the sound...

I agree. That S65 with a good exhaust was pure bliss

BTWoody · 10-05-2015, 04:05 PM

Quote:

Originally Posted by CanAutM3

Quote:

Originally Posted by BTWoody

yeah, I had a REMUS sports exhaust on my E92 but I think Remus dynoed it and it was something like 10hp boost. I never noticed the boost in Hp but the sound...

I agree. That S65 with a good exhaust was pure bliss

It sure did, that S65 engine was a jewel, some days I wish I had my E92 back, but then again I'm glad I'm healthy enough to enjoy every second I have with my M4...you know

CaryTheLabelGuy · 10-05-2015, 04:44 PM

The E92 did sound amazing. No doubt about it. I wish I had one to go along with my M4 and X3d.

erind · 10-05-2015, 05:30 PM

Quote:

Originally Posted by M3ANOXGREEN

and we buy crazy expensive exhausts with little to no gain of hp/tq for what?

Imho. MPE, AWE are the best exhausts for the M3/M4. I don't care about the 10+ hp gain. Stock sound sucks sorry. Yes the MPE is not cheap but now I really enjoy my car. Can't put a price on that.

10-03-2015, 05:56 PM	#1
BTWoody Private First Class 47 Rep 118 Posts Drives: Sakhir Orange M4 Join Date: Jul 2014 Location: Northern Ireland iTrader: (0)	What more does MPE exhaust give you more than Stock? I was wondering during the week about the MPE exhaust and was thinking about price as well. For an MPE exhaust it is roughly costing you around the region of £2500! But what does that give you? 1. Slightly better sound 2. Subtle boost in HP 3. No Rust 4. Less weight And so on... (Bare with me!) When I open the valves on a stock exhaust system, it is supposed to be straight though bypassing the muffler, but the difference being the stock exhaust has one more catalytic converter than MPE. So this is the conclusion: Are you just paying for one less Catalytic converter, so if I were to cut off the secondary catalytic converter and weld in a pipe with exact same diameter on stock exhaust, is it basically an MPE? Or am I just a colossal knob!
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10-04-2015, 08:26 AM	#2
erind Lieutenant 624 Rep 426 Posts Drives: Ftype R, M4 Join Date: Nov 2014 Location: Belgium/Antwerp iTrader: (0)	Much better sound, tips look awesome.
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10-04-2015, 12:27 PM	#4
CanAutM3 General 21117 Rep 20,741 Posts Drives: 2021 911 turbo Join Date: Jan 2012 Location: Montreal iTrader: (1) Garage List 2022 Audi RS6 [10.00] 2021 Porsche 911 turbo [10.00]	Better sound Better looks Lighter weight It does not provide a noticible gain in power. __________________ Porsche 911 turbo 2021 992 GT Silver Previous cars: M4cs 2019 F82 Limerock Grey / M4 2015 F82 Silverstone / M3 2008 E92 Silverstone / M3 2002 E46 Carbon Black
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10-05-2015, 11:25 AM	#6
schnazzy Lieutenant 227 Rep 597 Posts Drives: YMBSSM4 Join Date: Mar 2015 Location: rain city usa iTrader: (0)	The MPE will probably not give you gain. If there is a change it will most likely be in the -7 to +7hp range based on the HP of the engine. When the tuners with the most HP F80's around say that exhausts like the MPE give your little or not HP, I listen. If you find any literature from BMW that actually gives you example HP gain let me know. If some other exhaust doesn't have the cats, this might provide some minor gain. (or potentially loss). Best bang is a Tune, then downpipes. __________________ 2015 F82 M4 Yas Marina & Full SS - All pkg/opts but CCB. Xpel - All painted surfaces MPerf Electronic steering wheel, MPerf pedals, IND (reflectors, vents, grill, engine cover), Carbon Fiber (side marker, seat backs, shifter surround, e-Brake, rear spoiler). Pure S2 turbos, MPerf Exhaust, Akrapovic DPs, BM3 (Cary Jordan 657rwhp+), H&R springs, 20" AvantGarde rims
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10-05-2015, 11:54 AM	#8
mike@x-ph.com BimmerPost Supporting Vendor 24179 Rep 190,776 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Better sound . Dont expect any Performance increase with the Performance exhaust With all the options available for your car, you are definitely overpaying for the performance exhaust. I recommend you look at other options that offer more for less. If you are looking for more power a tune should be your first option. JB stage 1 is a very popular starting point to the M3/M4 tuning world __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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10-05-2015, 04:44 PM	#18
CaryTheLabelGuy Colonel 2634 Rep 2,809 Posts Drives: 2016 M4 ZCP Join Date: Mar 2015 Location: Jacksonville, FL iTrader: (0)	The E92 did sound amazing. No doubt about it. I wish I had one to go along with my M4 and X3d.
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