Got the Akrapovic Slip-on >>> First Impressions

///M/// · 07-11-2013, 08:43 AM

Just installed the Akrapovic slip on to replace the Meisterschaft GT and have mixed feeling for now. Here are my first impressions....

Didn't realize how bassy/boomy it is on start-up

The boom is way too loud and really annoying to be honest. Have to pull out of my garage real quickly fearing what the neighbors might say. Being loud is one thing but the boom is on another level as it seems to reverberate off the walls and make my kitchen and bedroom walls vibrate. Anyone who says it is only slightly louder than stock, I don't know what you are listening to

.However, once it warms up, it quietens down quite a bit but I still notice the boom in the lower rpm's when pulling out of parking lot's or anytime at slow speeds.

On a positive note, it's got a nice hum to it when cruising around and pretty nice tone all the way upto 5500 rpm. However, after 5500 rpm thru redline, it stays relatively quiet and the S65 noise drowns it out. That is totally opposite of the Meisterschaft GT which screams at higher rpm's.

Anyways, just wanted to share my first thoughts. Am going to give it some more time before deciding if I want to keep this, go the M Perf route or revert back to the Meisterschaft GT.

Grail05 · 07-11-2013, 08:46 AM

hahaha i do the same pull out of my garage cause the neighbors complain that i wake them up at 4am... lol

THE TECH · 07-11-2013, 08:47 AM

If you have the cold start turned off, you will get rid of the louder sound during startup. The Akra is definitely one of the more tame exhausts out there. I would def keep this exhaust over most others. M Perf is ok as long as you don't plan on an x-pipe.

Siciliano611 · 07-11-2013, 08:49 AM

Quote:

Originally Posted by THE TECH

If you have the cold start turned off, you will get rid of the louder sound during startup. The Akra is definitely one of the more tame exhausts out there. I would def keep this exhaust over most others. M Perf is ok as long as you don't plan on an x-pipe.

Are there any downsides to turning the cold start off through coding?

THE TECH · 07-11-2013, 08:51 AM

Quote:

Originally Posted by Siciliano611

Are there any downsides to turning the cold start off through coding?

Cold start cannot be turned off via coding. You would have to have a tune in order to accomplish that. The cold start is for emissions so there is really no detriment to turning it off.

///M/// · 07-11-2013, 08:53 AM

Quote:

Originally Posted by THE TECH

If you have the cold start turned off, you will get rid of the louder sound during startup. The Akra is definitely one of the more tame exhausts out there. I would def keep this exhaust over most others. M Perf is ok as long as you don't plan on an x-pipe.

My guess is it has to be coded? Correct? Where can I go for that? Dealer would probably void warranty if I went to them and probably refuse to do it. Any drawbacks to having it tuned off?

Quote:

Originally Posted by Sean05

hahaha i do the same pull out of my garage cause the neighbors complain that i wake them up at 4am... lol

Haha, then you know exactly what I mean. The Meisterschaft is way quieter on startup as hard as that is to believe.

THE TECH · 07-11-2013, 08:55 AM

Quote:

Originally Posted by dsm918

My guess is it has to be coded? Correct? Where can I go for that? Dealer would probably void warranty if I went to them and probably refuse to do it. Any drawbacks to having it tuned off?

Cold start can only be turned off with a tune. We can sell you a performance tune anytime you'd like. Why would the dealer void your warranty? No drawbacks.

F1Venom · 07-11-2013, 08:56 AM

Dealers would void the warranty over an exhaust?

S65V8 · 07-11-2013, 08:58 AM

yep, slip-on will be on the tame side. Add some test pipes or x-pipe, it will sing perfectly. Not sure if the boom will be reduced, I think that's the way it just sounds.

///M/// · 07-11-2013, 08:59 AM

Quote:

Originally Posted by THE TECH

Cold start can only be turned off with a tune. We can sell you a performance tune anytime you'd like. Why would the dealer void your warranty? No drawbacks.

Saw you reply on the cold start after I had already posted. Disregard the comment on the dealer voiding warranty. I was under the impression that cold start is turned off only through coding and the dealer is likely not to support that and could possibly void warranty. Now that you have cleared that up, the question doesn't apply

///M/// · 07-11-2013, 09:01 AM

Quote:

Originally Posted by F1Venom

Dealers would void the warranty over an exhaust?

I was referring to the "Cold Start delete", not the exhaust.

THE TECH · 07-11-2013, 09:01 AM

Quote:

Originally Posted by dsm918

I was referring to the "Cold Start delete", not the exhaust.

Dealer would prob not even know it was missing.

Longboarder · 07-11-2013, 09:03 AM

Congrats OP.

I hated the cold start feature as well and just couldn't get used to it. It was rediculously loud particularly at work in my parking garage so I got rid it with a tune update.

SweetJebus · 07-15-2013, 11:37 AM

Ha, I just installed my slip-on yesterday and I'm surprised by how bassy/loud it is. I'm wondering if I torqued down the clamps tight enough...

///M/// · 07-15-2013, 12:37 PM

Quote:

Originally Posted by SweetJebus

Ha, I just installed my slip-on yesterday and I'm surprised by how bassy/loud it is. I'm wondering if I torqued down the clamps tight enough...

That is just how it sounds. I had some trouble keeping the stock rounded clamps straight as I was tightening them down.

SweetJebus · 07-15-2013, 12:47 PM

Good to know. I'll probably get used to it. I remember when I first got the car (stock), I thought something was broken because it was too loud. Cut to a few months later, I got the slip-on because it wasn't loud enough...

I guess at this rate, it'll have a straight pipe by 2014.

Chriskm3 · 07-15-2013, 01:09 PM

If it bothers you now it will only get worse with time. If you are considering doing the xpipe it will only amplify the sound.

The Automotive Enthusiast · 07-15-2013, 06:47 PM

Quote:

Originally Posted by THE TECH

If you have the cold start turned off, you will get rid of the louder sound during startup. The Akra is definitely one of the more tame exhausts out there. I would def keep this exhaust over most others. M Perf is ok as long as you don't plan on an x-pipe.

ESS.

Savage_M3 · 07-16-2013, 02:07 PM

Quote:

Originally Posted by THE TECH

M Perf is ok as long as you don't plan on an x-pipe.

What is the issue with combining the M performance with an X-Pipe?

kawasaki00 · 07-16-2013, 02:18 PM

Quote:

Originally Posted by Savage_M3

What is the issue with combining the M performance with an X-Pipe?

The MPE gets really raspy with a xpipe or cat delete.

07-11-2013, 08:43 AM	#1
///M/// Brigadier General 1865 Rep 3,661 Posts Drives: 2016 Manual AW F80 Join Date: Jul 2009 Location: Philly iTrader: (6)	Got the Akrapovic Slip-on >>> First Impressions Just installed the Akrapovic slip on to replace the Meisterschaft GT and have mixed feeling for now. Here are my first impressions.... Didn't realize how bassy/boomy it is on start-up The boom is way too loud and really annoying to be honest. Have to pull out of my garage real quickly fearing what the neighbors might say. Being loud is one thing but the boom is on another level as it seems to reverberate off the walls and make my kitchen and bedroom walls vibrate. Anyone who says it is only slightly louder than stock, I don't know what you are listening to.However, once it warms up, it quietens down quite a bit but I still notice the boom in the lower rpm's when pulling out of parking lot's or anytime at slow speeds. On a positive note, it's got a nice hum to it when cruising around and pretty nice tone all the way upto 5500 rpm. However, after 5500 rpm thru redline, it stays relatively quiet and the S65 noise drowns it out. That is totally opposite of the Meisterschaft GT which screams at higher rpm's. Anyways, just wanted to share my first thoughts. Am going to give it some more time before deciding if I want to keep this, go the M Perf route or revert back to the Meisterschaft GT.
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07-11-2013, 08:46 AM	#2
Grail05 Putcha ang ganda... 282 Rep 5,441 Posts Drives: 17 F82 M4 Join Date: Feb 2010 Location: Los Angeles, Brea CA. iTrader: (10)	hahaha i do the same pull out of my garage cause the neighbors complain that i wake them up at 4am... lol __________________
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07-11-2013, 08:47 AM	#3
THE TECH BimmerPost Supporting Vendor 308 Rep 13,093 Posts Drives: BPMsport 2012 E92 M3 Join Date: Jun 2011 Location: Kansas iTrader: (45) Garage List 2013 Nissan GTR [0.00] 2019 Sierra Denali ... [0.00] 1999 Nissan Silvia [0.00] 1999 Nissan Skyline ... [0.00] 1998 Toyota Supra [0.00]	If you have the cold start turned off, you will get rid of the louder sound during startup. The Akra is definitely one of the more tame exhausts out there. I would def keep this exhaust over most others. M Perf is ok as long as you don't plan on an x-pipe.
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07-11-2013, 08:56 AM	#8
F1Venom Banned 73 Rep 961 Posts Drives: ZCP E90 M3 Join Date: Apr 2013 Location: USA iTrader: (0)	Dealers would void the warranty over an exhaust?
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07-11-2013, 08:58 AM	#9
S65V8 _ 812 Rep 3,160 Posts Drives: ... Join Date: Apr 2009 Location: Los Angeles, CA iTrader: (10)	yep, slip-on will be on the tame side. Add some test pipes or x-pipe, it will sing perfectly. Not sure if the boom will be reduced, I think that's the way it just sounds.
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07-11-2013, 09:03 AM	#13
Longboarder Major General 3437 Rep 6,771 Posts Drives: 2016 BMW i8 Join Date: Dec 2006 Location: Monarch Beach iTrader: (1) Garage List 2012 BMW e92 M3 [0.00] 2021 BMW X5M [10.00] 2015 Porsche 991 Tu ... [10.00] 2015 Porsche 991 GT3 [10.00]	Congrats OP. I hated the cold start feature as well and just couldn't get used to it. It was rediculously loud particularly at work in my parking garage so I got rid it with a tune update. __________________ Current BMWs: 2022 X5 40i, 2016 X5 50i 2015 Porsche 991 Turbo S 1979 Porsche 911 Turbo (930) a couple others IG: longboarder949; YouTube: https://www.youtube.com/channel/UCT1...eoFBszPIK0gf9w
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07-15-2013, 11:37 AM	#14
SweetJebus New Member 0 Rep 17 Posts Drives: '10 E90 M3 Join Date: Aug 2012 Location: Los Angeles iTrader: (2)	Ha, I just installed my slip-on yesterday and I'm surprised by how bassy/loud it is. I'm wondering if I torqued down the clamps tight enough...
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07-15-2013, 12:47 PM	#16
SweetJebus New Member 0 Rep 17 Posts Drives: '10 E90 M3 Join Date: Aug 2012 Location: Los Angeles iTrader: (2)	Good to know. I'll probably get used to it. I remember when I first got the car (stock), I thought something was broken because it was too loud. Cut to a few months later, I got the slip-on because it wasn't loud enough... I guess at this rate, it'll have a straight pipe by 2014.
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07-15-2013, 01:09 PM	#17
Chriskm3 Colonel 59 Rep 2,186 Posts Drives: M3 Join Date: Jul 2012 Location: Toronto iTrader: (4)	If it bothers you now it will only get worse with time. If you are considering doing the xpipe it will only amplify the sound. __________________ Vf supercharger + tune/H&R coils/ Akra evolution exhaust/Volk te37/ Rs-3 tires/ Brembos /TIal BOV/ OSS blacked out headlights/LUX v3/Led taillights/ Challenge Front lip/ P3 vent gauge/ F10 m5 shift mob/Matte black front grills/ And a funky air fresher
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