How loud are AA headers?

E92inAZ · 09-14-2017, 09:30 AM

So I just did this to my 07 328i over the weekend and was also concerned with highway drone and/or that coffee can muffler effect that makes your neighbors hate you and their kids want to race you.

I installed the AA headers with the BPC tune (stage 2) and an aFe airbox on the 3 stage intake and I have to say I think I'm getting more noise from the intake side of the engine. Inside the car you will be aware of a new exhaust note but I don't find it intrusive or annoying - and I'm old and grumpy!
When you decide it's time to enjoy the fruits of your investment and the red mist descends, it will SCREAM like a mid nineties f1 car as the BPC tune delivers uninterrupted power all the way to the higher redline... It's SO good. Do it.
But then you flop the shifter back over to normal AT mode and it's just your car again.
I read and read and changed my mind weekly for months about this, but now that I've done it I'm very pleased with it and glad I did it.

rick100 · 09-14-2017, 09:58 AM

Quote:

Originally Posted by E92inAZ

So I just did this to my 07 328i over the weekend and was also concerned with highway drone and/or that coffee can muffler effect that makes your neighbors hate you and their kids want to race you.

I installed the AA headers with the BPC tune (stage 2) and an aFe airbox on the 3 stage intake and I have to say I think I'm getting more noise from the intake side of the engine. Inside the car you will be aware of a new exhaust note but I don't find it intrusive or annoying - and I'm old and grumpy!
When you decide it's time to enjoy the fruits of your investment and the red mist descends, it will SCREAM like a mid nineties f1 car as the BPC tune delivers uninterrupted power all the way to the higher redline... It's SO good. Do it.
But then you flop the shifter back over to normal AT mode and it's just your car again.
I read and read and changed my mind weekly for months about this, but now that I've done it I'm very pleased with it and glad I did it.

that is what I been saying for a while, headers are not loud at all. K and N filter makes more noise below 4k , it only gets louder above 5000 rpm and that is with 3 stage intake and disa valves screaming at the sametime

German Straight-6 · 09-14-2017, 01:19 PM

Quote:

Originally Posted by rick100

its not loud at all. Honestly unless you are reving it past 4500 rpm , even then you ll need to put the windows down to really hear it

Keep in mind the stock exhaust sounds is crap , so this gets you what the car should've sound it stock

I had to add a k and n filter and removed the charcoal filter to improve the sound .

I m even tempted to do the PE mod , but I think that may attract the wrong attention

The stock exhaust system sounds truly great with a high flow muffler (like 135i PE exhaust, which is only the performance muffler) and primary or secondaries deleted. Amazing sound with the factory resonator!

N52UNED · 09-14-2017, 04:32 PM

Quote:

Originally Posted by German Straight-6

The stock exhaust system sounds truly great with a high flow muffler (like 135i PE exhaust, which is only the performance muffler) and primary or secondaries deleted. Amazing sound with the factory resonator!

When I do finally pull the trigger (and they're in stock) I'll likely add a AA Gen 2 rear exhaust along with the headers.

At the moment the exhaust mod is on hold ... currently looking to parlay the funds towards an X5 3.0si (N52 ... of course will add a BPC tune).

BMWs seem to be like potato chips ... its hard to stop with one. Once you get bitten by the Bimmer Bug ...

sprp85 · 09-14-2017, 06:40 PM

Quote:

Originally Posted by German Straight-6

The stock exhaust system sounds truly great with a high flow muffler (like 135i PE exhaust, which is only the performance muffler) and primary or secondaries deleted. Amazing sound with the factory resonator!

You again?

Nice try on changing your cars to 535 and 328..

Anyhow, 135i PE includes resonator delete.

Its the 128i PE that is muffler only.

German Straight-6 · 09-14-2017, 06:46 PM

Quote:

Originally Posted by sprp85

You again?

Nice try on changing your cars to 535 and 328..

Anyhow, 135i PE includes resonator delete.

Its the 128i PE that is muffler only.

Lol, ah ok thanks for the info.

My perfect exhaust setup would be either:

1. Supersprint catless headers > secondaries and resonator intact > 128i PE muffler

OR

2. Secondary cat delete > res intact > custom fabricated muffler that has Y-pipe welded to two resonators with the dual tips going out the other side.

hassmaschine · 09-14-2017, 08:57 PM

You have a F10 528i slushbox. Literally, nobody can even tune it (MSV90) an nor does anyone want to.

3002 tii · 09-16-2017, 07:47 PM

Quote:

Originally Posted by hassmaschine

You have a F10 528i slushbox. Literally, nobody can even tune it (MSV90) an nor does anyone want to.

JuniorB · 09-16-2017, 08:13 PM

Quote:

Originally Posted by sprp85

You again?

Nice try on changing your cars to 535 and 328..

Anyhow, 135i PE includes resonator delete.

Its the 128i PE that is muffler only.

It's like that weed that keeps on growing, no matter how many times you pull it,it keeps popping up..

09-14-2017, 09:30 AM	#23
E92inAZ Private 40 Rep 74 Posts Drives: 2007 E92 coupe Join Date: Jul 2015 Location: Glendale, AZ iTrader: (0)	So I just did this to my 07 328i over the weekend and was also concerned with highway drone and/or that coffee can muffler effect that makes your neighbors hate you and their kids want to race you. I installed the AA headers with the BPC tune (stage 2) and an aFe airbox on the 3 stage intake and I have to say I think I'm getting more noise from the intake side of the engine. Inside the car you will be aware of a new exhaust note but I don't find it intrusive or annoying - and I'm old and grumpy! When you decide it's time to enjoy the fruits of your investment and the red mist descends, it will SCREAM like a mid nineties f1 car as the BPC tune delivers uninterrupted power all the way to the higher redline... It's SO good. Do it. But then you flop the shifter back over to normal AT mode and it's just your car again. I read and read and changed my mind weekly for months about this, but now that I've done it I'm very pleased with it and glad I did it. __________________ 2007 E92 328i coupe. 19" staggered VMR v710, front: 19x8.5 et35 continental 235/35 19, rear: 19x9.5 et33 continental 265/30 19; 1 inch front lowering perches; Msport rear bumper; roof spoiler; trunk lip; Bavsound UF110; carbon fiber wrapped interior trim; 3 stage BMW intake manifold; aFe magnum force stage 2 si pro 5R cold air intake; active autowerkes catless header; active autowerkes gen 2 signature exhaust; BPC stage 2 header tune
	Appreciate 1 N52UNED181.00 Quote

09-14-2017, 08:57 PM	#29
hassmaschine Major General 3987 Rep 7,212 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	You have a F10 528i slushbox. Literally, nobody can even tune it (MSV90) an nor does anyone want to.
	Appreciate 0 Quote