Three Stage Intake Folks v. Exhaust mods?

Johnny D · 09-25-2011, 02:12 PM

For the 325i/28i folks with the intake manifold swap...what, if any, exhaust mods have you done?

Any further gains?

My intake in on the way and before I get the ECU flashed, I want to have all the mods complete. I will be making a run to an authorized AA shop to do a dyno tune.

My thoughts...
Headers (ARMA or Gavin)
Magnaflow dual exit with 335i diffuser
Keep 2nd cats and resonator

MaximusJ · 09-26-2011, 08:50 AM

I went all in with Performance intake and exhaust, 3 stage manifold, resonator delete and 2nd cat delete.

I love that sound! Dont know for gains yet but i'm riding the dyno next saturday!

Moonesar · 09-26-2011, 03:12 PM

Quote:

Originally Posted by jntar

For the 325i/28i folks with the intake manifold swap...what, if any, exhaust mods have you done?

Any further gains?

My intake in on the way and before I get the ECU flashed, I want to have all the mods complete. I will be making a run to an authorized AA shop to do a dyno tune.

My thoughts...
Headers (ARMA or Gavin)
Magnaflow dual exit with 335i diffuser
Keep 2nd cats and resonator

How much did it run you for the intake manifold?

Johnny D · 09-26-2011, 04:08 PM

Quote:

Originally Posted by MaximusJ

I went all in with Performance intake and exhaust, 3 stage manifold, resonator delete and 2nd cat delete.

I love that sound! Dont know for gains yet but i'm riding the dyno next saturday!

I look forward to your results

I have a dyno time set up for a stock run next week. Then the following week I will set another appointment.

Quote:

Originally Posted by Moonesar

How much did it run you for the intake manifold?

Bavarian auto recycling had the part for $300. I am crossing my fingers that it came with the actuators. The person who sold me the part stated it would come with everything it should. If it does I got a steal, if it doesnt I saved $200 over the cost of a new manifold.

MaximusJ · 09-26-2011, 04:59 PM

Just a friendly advice tho; stay away from the open air intakes.

Totally kills the deal.

Johnny D · 09-26-2011, 05:29 PM

Quote:

Originally Posted by MaximusJ

Just a friendly advice tho; stay away from the open air intakes.

Totally kills the deal.

Yeah I figured that. Currently Im running the stock airbox with K&N and Charcoal delete. Planned on getting the euro box, but might not change anything honestly. Im looking more at exaust than intake currently.

MaximusJ · 09-26-2011, 05:41 PM

Wise decision

09-25-2011, 02:12 PM	#1
Johnny D Major 65 Rep 1,087 Posts Drives: 2006 BMW 325i Join Date: Apr 2011 Location: Hot Springs, AR iTrader: (4) Garage List 2006 BMW 325i [9.16]	Three Stage Intake Folks v. Exhaust mods? For the 325i/28i folks with the intake manifold swap...what, if any, exhaust mods have you done? Any further gains? My intake in on the way and before I get the ECU flashed, I want to have all the mods complete. I will be making a run to an authorized AA shop to do a dyno tune. My thoughts... Headers (ARMA or Gavin) Magnaflow dual exit with 335i diffuser Keep 2nd cats and resonator Last edited by Johnny D; 09-25-2011 at 06:00 PM..
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09-26-2011, 08:50 AM	#2
MaximusJ Colonel 311 Rep 2,485 Posts Drives: 340Xi MG 2017 Join Date: Jul 2010 Location: Quebec, Canada iTrader: (21) Garage List 2017 BMW 340XI (F30) [9.00] 2006 BMW 325I (E90) [7.44]	I went all in with Performance intake and exhaust, 3 stage manifold, resonator delete and 2nd cat delete. I love that sound! Dont know for gains yet but i'm riding the dyno next saturday! __________________ Mineral Grey '17 F30 340XI [Garage] // [Build Journal] Jet Black '06 E90 325I [Garage]
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09-26-2011, 04:59 PM	#5
MaximusJ Colonel 311 Rep 2,485 Posts Drives: 340Xi MG 2017 Join Date: Jul 2010 Location: Quebec, Canada iTrader: (21) Garage List 2017 BMW 340XI (F30) [9.00] 2006 BMW 325I (E90) [7.44]	Just a friendly advice tho; stay away from the open air intakes. Totally kills the deal. __________________ Mineral Grey '17 F30 340XI [Garage] // [Build Journal] Jet Black '06 E90 325I [Garage]
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09-26-2011, 05:41 PM	#7
MaximusJ Colonel 311 Rep 2,485 Posts Drives: 340Xi MG 2017 Join Date: Jul 2010 Location: Quebec, Canada iTrader: (21) Garage List 2017 BMW 340XI (F30) [9.00] 2006 BMW 325I (E90) [7.44]	Wise decision __________________ Mineral Grey '17 F30 340XI [Garage] // [Build Journal] Jet Black '06 E90 325I [Garage]
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