MPE + DP Owners

963mw · 02-02-2018, 02:35 AM

Hey guys,

This is kinda directed at people with Catless downpipes and an MPE exhaust.

I just installed my ER Catless DP last week. It sounds amazing, but there's some rasp at around 3.5-4.5k RPM. Anyone else has this?

I might uninstall the DP if I can't resolve that rasp because it sounds like a mix of a Nissan 350z and the M4 and I hate that.

Any suggestions would be appreciated.

AK.Alexx · 02-02-2018, 02:51 AM

It’s normal. With the valves open it’s a straight pipe.
That’s the reason why I went for sportcat. Same type of sound as stock MPE, deep, mean and raw. Just a lot louder.

963mw · 02-02-2018, 02:52 AM

Quote:

Originally Posted by AK.Alexx

It’s normal. With the valves open it’s a straight pipe.
That’s the reason why I went for sportcat. Same type of sound as stock MPE, deep, mean and raw. Just a lot louder.

Which company's sportcat did you get? Fabspeed?

AK.Alexx · 02-02-2018, 03:58 AM

Quote:

Originally Posted by 963mw

Which company's sportcat did you get? Fabspeed?

Akrapovic. Due waranty at my dealer. 300 cell sportcat. First I was afraid of not being to loud. But it sounds wonderfull.
You can find some videos on my instagram: AK.Alexx

alscks0414 · 02-02-2018, 08:30 AM

Quote:

Originally Posted by AK.Alexx

Akrapovic. Due waranty at my dealer. 300 cell sportcat. First I was afraid of not being to loud. But it sounds wonderfull.
You can find some videos on my instagram: AK.Alexx

Have Fabspeed Sport Cat DP + MPE.
HJS 200 CEL Cat, and was confirmed by the dealer located Toronto, Canada that there will be no issue with keeping warranty. Factory Cat is 400 CEL. I dont know why your dealer is okay with 300 CEL, not 200 CEL??

AK.Alexx · 02-02-2018, 11:54 AM

Because they sell Akrapovic and it’s in co-operation with BMW Germany. I live in Belgium btw.

AK.Alexx · 02-02-2018, 11:55 AM

But i’m happy with the sound. With valves open it’s very loud. Valves closed it’s sporty and no drone. Throttle response improved also. Friend of mine, with MPE and 200 cell Wagner do have drone.

alscks0414 · 02-02-2018, 01:50 PM

Quote:

Originally Posted by AK.Alexx

But i’m happy with the sound. With valves open it’s very loud. Valves closed it’s sporty and no drone. Throttle response improved also. Friend of mine, with MPE and 200 cell Wagner do have drone.

I have ASD still on did not kill it by coding. So does drone at certain speed and certain RPM. No difference for me to feel between having DP or not much

02-02-2018, 02:35 AM	#1
963mw BMW Fanatic 331 Rep 1,076 Posts Drives: M2 Join Date: Nov 2014 Location: Mexico iTrader: (0)	MPE + DP Owners Hey guys, This is kinda directed at people with Catless downpipes and an MPE exhaust. I just installed my ER Catless DP last week. It sounds amazing, but there's some rasp at around 3.5-4.5k RPM. Anyone else has this? I might uninstall the DP if I can't resolve that rasp because it sounds like a mix of a Nissan 350z and the M4 and I hate that. Any suggestions would be appreciated. __________________ 18 BMW M2 \| ER DP \| ER CP \| Wagner Evo 2 Comp Intercooler \| Aquamist HFS4 \| BM3 \| CSF Oil Cooler \| AFE Drop-in Filter \| Bilstein B16 PSS10
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02-02-2018, 02:51 AM	#2
AK.Alexx Private First Class 49 Rep 111 Posts Drives: BMW M2 on order Join Date: Feb 2014 Location: BELGIUM iTrader: (0)	It’s normal. With the valves open it’s a straight pipe. That’s the reason why I went for sportcat. Same type of sound as stock MPE, deep, mean and raw. Just a lot louder.
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02-02-2018, 11:54 AM	#6
AK.Alexx Private First Class 49 Rep 111 Posts Drives: BMW M2 on order Join Date: Feb 2014 Location: BELGIUM iTrader: (0)	Because they sell Akrapovic and it’s in co-operation with BMW Germany. I live in Belgium btw.
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02-02-2018, 11:55 AM	#7
AK.Alexx Private First Class 49 Rep 111 Posts Drives: BMW M2 on order Join Date: Feb 2014 Location: BELGIUM iTrader: (0)	But i’m happy with the sound. With valves open it’s very loud. Valves closed it’s sporty and no drone. Throttle response improved also. Friend of mine, with MPE and 200 cell Wagner do have drone.
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