pros and cons on straight pipes?

f32458 · 11-07-2011, 04:40 PM

I had Akra EVO before the iPE F1. Both stinks but iPE is much much louder.
Why do you run full system and why not?

THE TECH · 11-07-2011, 04:42 PM

Full system for the most power gains, pretty simple.

Grail05 · 11-07-2011, 04:49 PM

Pros: Power

Cons: Cel Engine Light...

Solution: Tune Or Akra Delete - R

f32458 · 11-07-2011, 04:53 PM

Quote:

Originally Posted by THE TECH

Full system for the most power gains, pretty simple.

That is what I thought. When I had the Akra EVO for two weeks. I felt the gain is much more noticeable than my current iPE F1. I am embarrassed to WOT since it is way too loud in the city driving. I heard from some people saying with the valve closed, I gain more torque? My valve opens at 3800rpm in auto mode. Which is insanely loud after I pass 3800rpm so I let go of the gas pedal immediately. Again, it has been raining crazy lately. Haven't yet to drive it hard with the valve open/close.

JDM3 · 11-07-2011, 08:50 PM

Pros, power. Cons, smell and CEL w/ no tune

bchang2001 · 11-08-2011, 12:04 AM

can you smell the exhaust at a stop with the windows down?

eNCore · 11-08-2011, 12:50 AM

Quote:

Originally Posted by f32458

I had Akra EVO before the iPE F1. Both stinks but iPE is much much louder.
Why do you run full system and why not?

Can you explain why the Akra Evo stinks? I'm thinking about getting one very soon.

atruelunatic · 11-08-2011, 11:47 AM

Quote:

Originally Posted by ///M-Turismo

Can you explain why the Akra Evo stinks? I'm thinking about getting one very soon.

It uses hi-flo catalytic converters instead of regular cats. That's the thing that makes the smell of the exhaust go away, but having regular cats reduces the flow of the gases. Something along to that nature.

ES_TRADER · 11-08-2011, 03:02 PM

Quote:

Originally Posted by bchang2001

can you smell the exhaust at a stop with the windows down?

usually No..but if stopped too long and wind blows up your ass, to the front, then yea, u can smell it...i like the smell tho...cant be good for u, im sure

bigjae1976 · 11-08-2011, 03:12 PM

The only time I regret not having cats (on my E46) is when its cold out and I want to warm up the car in the garage for a quick moment (with the garage door open of course)...the smell gets quite strong.

BMWJ · 11-08-2011, 07:38 PM

Pros: loud

Cons: loud

Taz@Evolve. P · 11-08-2011, 08:13 PM

Quote:

Originally Posted by BMWJ

Pros: loud

Cons: loud

Lmao

MR///M3 · 11-08-2011, 08:58 PM

Quote:

Originally Posted by f32458

That is what I thought. When I had the Akra EVO for two weeks. I felt the gain is much more noticeable than my current iPE F1. I am embarrassed to WOT since it is way too loud in the city driving. I heard from some people saying with the valve closed, I gain more torque? My valve opens at 3800rpm in auto mode. Which is insanely loud after I pass 3800rpm so I let go of the gas pedal immediately. Again, it has been raining crazy lately. Haven't yet to drive it hard with the valve open/close.

why don't you keep the valves closed in the city and then when you want to rip it on the highway or side streets, open it? That's what I'm going to do when I install mine.

f32458 · 11-09-2011, 12:59 AM

Quote:

Originally Posted by MR///M3

why don't you keep the valves closed in the city and then when you want to rip it on the highway or side streets, open it? That's what I'm going to do when I install mine.

This is what I do. Sometimes I just wanna WOT.

Great, your M3 will sounds the most aggressive in your area soon.

11-07-2011, 04:40 PM	#1
f32458 Second Lieutenant 39 Rep 203 Posts Drives: E90 M3 Join Date: Jul 2011 Location: Santa Monica iTrader: (0)	pros and cons on straight pipes? I had Akra EVO before the iPE F1. Both stinks but iPE is much much louder. Why do you run full system and why not? __________________ 2011 E90 DCT, sold 2011 E92 DCT ZCP \| Akrapovic full setup \| Evolve stage II \| OEM grille \| splitter \| spoiler
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11-07-2011, 04:42 PM	#2
THE TECH BimmerPost Supporting Vendor 307 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]	Full system for the most power gains, pretty simple.
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11-07-2011, 04:49 PM	#3
Grail05 Putcha ang ganda... 279 Rep 5,441 Posts Drives: 17 F82 M4 Join Date: Feb 2010 Location: Los Angeles, Brea CA. iTrader: (10)	Pros: Power Cons: Cel Engine Light... Solution: Tune Or Akra Delete - R __________________
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11-07-2011, 08:50 PM	#5
JDM3 Major 109 Rep 1,292 Posts Drives: 2009 M3 E92 Join Date: Oct 2010 Location: Long Valley, NJ iTrader: (7)	Pros, power. Cons, smell and CEL w/ no tune
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11-08-2011, 12:04 AM	#6
bchang2001 Lieutenant 18 Rep 463 Posts Drives: e92 M3 Join Date: Mar 2011 Location: OC,CA iTrader: (5)	can you smell the exhaust at a stop with the windows down?
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11-08-2011, 03:12 PM	#10
bigjae1976 Major General 1570 Rep 8,075 Posts Drives: 11 E90 M3 Individual Join Date: Mar 2006 Location: Houston, TX iTrader: (22) Garage List 2004 BMW M3 [4.50] 2011 BMW E90 M3 [5.25] 2013 BMW 328i [5.00]	The only time I regret not having cats (on my E46) is when its cold out and I want to warm up the car in the garage for a quick moment (with the garage door open of course)...the smell gets quite strong. __________________ 2018 F30 320iX Melbourne Red 2011 E90 M3 Monte Carlo Blue 2004 E46 M3 Imola Red 2000 E36/7 Z3 Steel Blue
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11-08-2011, 07:38 PM	#11
BMWJ Lieutenant 61 Rep 480 Posts Drives: 2011 E92 M3 Join Date: Oct 2011 Location: NY iTrader: (0)	Pros: loud Cons: loud
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