Akrapovic and emissions

jms_w · 01-06-2011, 09:33 PM

I highly doubt the full Akrapovic Evolution would pass emissions but how about Akarpovic slip-on? And is slip-on even worth it?

Sean@PYSpeed.com · 01-06-2011, 10:45 PM

Slip-on passes emissions without a problem.
Many have praised the quality, sound, and gain. The sound and looks are what people are after in an slip on exhaust.

UNNATRAL · 01-06-2011, 10:59 PM

why would the full akropovic not pass emissions? It has cats...

jms_w · 01-06-2011, 11:28 PM

Quote:

Originally Posted by UNNATRAL

why would the full akropovic not pass emissions? It has cats...

I read it somewhere else but here's another source:

http://www.alekshop.com/performance

Check out description of link pipes.

rjd598 · 01-06-2011, 11:55 PM

Quote:

Originally Posted by UNNATRAL

why would the full akropovic not pass emissions? It has cats...

Full akra is catless and will not pass emissions in most states

tom @ eas · 01-07-2011, 12:12 AM

Quote:

Originally Posted by UNNATRAL

why would the full akropovic not pass emissions? It has cats...

The Akrapovic Evo system replaces the OEM cats with 100cpsi versions, as the OEM versions are restrictive.

Going with the Slip-On version (ie: catback) retains the factory catalytic converters and will not affect emissions.

UNNATRAL · 01-07-2011, 12:38 AM

hmmm.....no clue then. if thats the case im fucked lol

tom @ eas · 01-07-2011, 12:44 AM

Quote:

Originally Posted by rjd598

Full akra is catless and will not pass emissions in most states

Akrapovic does offer a race version (same as used on the GT4) which eliminates the catalytic converters and resonators on the X-Pipe.

However, the X-Pipe used on the Evolution systems is equipped with the 100cpsi catalytic converters and resonators.

Jive · 01-07-2011, 04:38 AM

What is the difference in the power gain of full vs slip-on? If any...

alpina527 · 01-07-2011, 05:23 AM

I had mine tested on UK emissions with the full evo system. It passed without a problem.

Gkap · 01-07-2011, 05:50 AM

not passing emissions would steer me away from getting the full system.

jms_w · 01-07-2011, 07:59 AM

Quote:

Originally Posted by Jive

What is the difference in the power gain of full vs slip-on? If any...

24hp vs 3ps(?), 35Nm vs 4Nm

http://www.akrapovic.com/car-exhaust...3-e90-e92-e93/

I guess slip-on isn't so worth it unless looks and sound are a priority.

BimmerM · 01-07-2011, 08:31 AM

So if all you install is the Akrapovic Evo system with 100cpsi cats, will it still cause a CEL? Since the Cats are shifted further back I suspect the CEL will get triggered? Please note that I want to know if the CEL comes on WITHOUT having to install the Akrapovic CEL Delete. Thanks.

Gkap · 01-07-2011, 09:00 AM

Quote:

Originally Posted by BimmerM

So if all you install is the Akrapovic Evo system with 100cpsi cats, will it still cause a CEL? Since the Cats are shifted further back I suspect the CEL will get triggered? Please note that I want to know if the CEL comes on WITHOUT having to install the Akrapovic CEL Delete. Thanks.

Yes with the full EVO system a CEL does come on your dash, you have
to get the CEL Delete along with the exhaust.

J08M3 · 01-07-2011, 10:53 AM

Quote:

Originally Posted by Gkap

Yes with the full EVO system a CEL does come on your dash, you have
to get the CEL Delete along with the exhaust.

which in most states will still fail an emissions test.

I think the slip-on is worth it. It's a nice improvement in sound over OEM

kitw · 01-07-2011, 11:23 AM

^ I disagree, but everyone has different ears.

I am not discounting other people's opinions, I'm just saying that in mine, I didn't hear enough difference, especially not over $3000 worth of difference. I even thought some other exhausts sound better, like the AA, the Corsa, etc.

The problem that the catted Evo system will have, even with proper software that lets the readiness tests complete, is that the cats are so far downstream that you'd have to get them real hot before they'd even have a chance of passing. This means redlining the car for some time before pulling directly into the smog shop...

It was funny, my supercharged e36 M3 would fail smog if I didn't beat on it, then if I did, it would pass with flying colors.

Entrepreneurs In Cars · 01-07-2011, 12:08 PM

Quote:

Originally Posted by alpina527

I had mine tested on UK emissions with the full evo system. It passed without a problem.

Awesome news! Has anyone in Canada passed the sniff test with a full evo system?

J08M3 · 01-07-2011, 12:12 PM

Quote:

Originally Posted by kitw

^ I disagree, but everyone has different ears.

I am not discounting other people's opinions, I'm just saying that in mine, I didn't hear enough difference, especially not over $3000 worth of difference. I even thought some other exhausts sound better, like the AA, the Corsa, etc.

If I had to do it again.... (the 9th time). I'd just buy an Eisnmann Sport and be done with it. I think the tone is better than the Akra.

dardeca · 01-07-2011, 12:51 PM

Quote:

Originally Posted by J08M3

If I had to do it again.... (the 9th time). I'd just buy an Eisnmann Sport and be done with it. I think the tone is better than the Akra.

Is Eisnmann Sport only a sound upgrade? Or is there some HP and torque gain as well?

Gkap · 01-07-2011, 01:43 PM

Quote:

Originally Posted by J08M3

I think the slip-on is worth it. It's a nice improvement in sound over OEM

I totally agree with you.

When I order my exhaust it will be the Slip-On.

S65V8 · 06-14-2011, 05:44 AM

What about just the stock $4G BMW Performance Exhaust for the M? Passes emissions and cheaper than an Akra slip on....

J08M3 · 06-14-2011, 06:12 AM

Quote:

Originally Posted by SROC5

What about just the stock $4G BMW Performance Exhaust for the M? Passes emissions and cheaper than an Akra slip on....

More expensive than Akra slip on, unless you shop around and get lucky. However I can definitely say it sounds better.

01-06-2011, 09:33 PM	#1
jms_w Second Lieutenant 45 Rep 254 Posts Drives: '08 SG E93 M3 Join Date: May 2008 Location: VA iTrader: (0)	Akrapovic and emissions I highly doubt the full Akrapovic Evolution would pass emissions but how about Akarpovic slip-on? And is slip-on even worth it? __________________ jms_w '08 E93 M3 SG \| BLK \| 6MT
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01-06-2011, 10:45 PM	#2
Sean@PYSpeed.com Major General 306 Rep 8,952 Posts Drives: 2009 AW E92 M3 Join Date: Nov 2009 Location: Bay Area iTrader: (22)	Slip-on passes emissions without a problem. Many have praised the quality, sound, and gain. The sound and looks are what people are after in an slip on exhaust.
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01-06-2011, 10:59 PM	#3
UNNATRAL Banned 51 Rep 530 Posts Drives: 08 E92 M3, 09 Ford Explorer V8 Join Date: Jan 2011 Location: Toronto iTrader: (1)	why would the full akropovic not pass emissions? It has cats...
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01-07-2011, 12:38 AM	#7
UNNATRAL Banned 51 Rep 530 Posts Drives: 08 E92 M3, 09 Ford Explorer V8 Join Date: Jan 2011 Location: Toronto iTrader: (1)	hmmm.....no clue then. if thats the case im fucked lol
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01-07-2011, 04:38 AM	#9
Jive Lieutenant 156 Rep 580 Posts Drives: 2013 E92 M3 Join Date: Dec 2010 Location: Bay Area iTrader: (0)	What is the difference in the power gain of full vs slip-on? If any...
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01-07-2011, 05:23 AM	#10
alpina527 Banned 60 Rep 638 Posts Drives: 2008 E92 M3 DCT JZB/FR Join Date: Jan 2010 Location: London, England iTrader: (1)	I had mine tested on UK emissions with the full evo system. It passed without a problem.
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01-07-2011, 05:50 AM	#11
Gkap BMF Movement 51 Rep 3,024 Posts Drives: Women Crazy Join Date: Jul 2010 Location: GTA iTrader: (1)	not passing emissions would steer me away from getting the full system.
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01-07-2011, 08:31 AM	#13
BimmerM Lieutenant 98 Rep 525 Posts Drives: '21 F95 X5 M C, '11.5 E92 M3 C Join Date: Mar 2008 Location: NYC iTrader: (0) Garage List 2013 BMW X5 M [0.00] 2011 BMW M3 [0.00]	So if all you install is the Akrapovic Evo system with 100cpsi cats, will it still cause a CEL? Since the Cats are shifted further back I suspect the CEL will get triggered? Please note that I want to know if the CEL comes on WITHOUT having to install the Akrapovic CEL Delete. Thanks. __________________ Drives: '11.5 Interlagos Blue E92 M3 Comp, '21 F95 X5 M Comp DIYs: Enable Rear Fog \| Easy Side Gill Replacement \| Front Grill Replacement
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01-07-2011, 11:23 AM	#16
kitw Colonel 471 Rep 2,991 Posts Drives: F91 M8, 991.2 GT3 Join Date: Jun 2007 Location: Bay Area, CA iTrader: (20)	^ I disagree, but everyone has different ears. I am not discounting other people's opinions, I'm just saying that in mine, I didn't hear enough difference, especially not over $3000 worth of difference. I even thought some other exhausts sound better, like the AA, the Corsa, etc. The problem that the catted Evo system will have, even with proper software that lets the readiness tests complete, is that the cats are so far downstream that you'd have to get them real hot before they'd even have a chance of passing. This means redlining the car for some time before pulling directly into the smog shop... It was funny, my supercharged e36 M3 would fail smog if I didn't beat on it, then if I did, it would pass with flying colors.
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06-14-2011, 05:44 AM	#21
S65V8 _ 808 Rep 3,160 Posts Drives: ... Join Date: Apr 2009 Location: Los Angeles, CA iTrader: (10)	What about just the stock $4G BMW Performance Exhaust for the M? Passes emissions and cheaper than an Akra slip on....
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