cat delete, same exhaust volume...

weeeza · 05-29-2009, 11:57 PM

I have the V3 rev II with Canbus and I am running stage 1 AT, I really wanna go to stage 2 but I do not want a loud car

So is there any way to go completely catless (AR downpipes and midpipes) while keeping the OEM exhaust and muffler and maintain the same exhaust volume as a stock exhaust...

and if not possibe, how much louder are we talking here, also any chance of droning???

thanks for the help...

kuvesh · 05-30-2009, 02:34 AM

2nd cat delete doesnt cause drone but will increase the growl by a little. did that before when i was running the stock exhaust.

weeeza · 05-30-2009, 01:31 PM

anyone please help,

should I expect the volume to go up and if so by how much?

LiKWiD335xi · 05-31-2009, 03:15 AM

You won't retain the stock exhaust volume but it won't be very loud either. Secondary cat delete adds a little volume and catless downpipes will add a little volume plus add some raspiness. It's hard to explain.

I cut the secondary cats out of my stock exhaust. It's not loud at all, it just makes the exhaust note more noticeable. I also heard in person the stock exhaust with just catless downpipes and it sounded great. For what you're asking and trying to do I think you'll be happy with it.

05-29-2009, 11:57 PM	#1
weeeza Private 4 Rep 71 Posts Drives: E93 335i Join Date: Mar 2009 Location: AZ iTrader: (0)	cat delete, same exhaust volume... I have the V3 rev II with Canbus and I am running stage 1 AT, I really wanna go to stage 2 but I do not want a loud car So is there any way to go completely catless (AR downpipes and midpipes) while keeping the OEM exhaust and muffler and maintain the same exhaust volume as a stock exhaust... and if not possibe, how much louder are we talking here, also any chance of droning??? thanks for the help...
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05-30-2009, 02:34 AM	#2
kuvesh Lieutenant 26 Rep 513 Posts Drives: e92 335i juiced Join Date: Jun 2008 Location: singapore iTrader: (1)	2nd cat delete doesnt cause drone but will increase the growl by a little. did that before when i was running the stock exhaust. __________________ HAMANN FRONT APRON, SIDES, ROOF SPOILER & QUAD DIFFUSER \| VORSTEINER VRS TRUNK \| CSC3 ON 19” ADVAN RS \| BREMBO GT BBK \| BASTUCK QUAD \| KW V2 \| JB3 v1.3s beta \| BMW PERFORMANCE STEERING WHEEL \| M3 SIDE MIRRORS \| M5 SMG SHIFT KNOB \| BLACKOUT GRILLS \| PARTIALLY SMOKED LIGHTS \| WINDOW TINT
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05-30-2009, 01:31 PM	#3
weeeza Private 4 Rep 71 Posts Drives: E93 335i Join Date: Mar 2009 Location: AZ iTrader: (0)	anyone please help, should I expect the volume to go up and if so by how much?
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05-31-2009, 03:15 AM	#4
LiKWiD335xi Anthony 10 Rep 274 Posts Drives: '08 E90 335xi Join Date: Sep 2008 Location: Central NJ iTrader: (1)	You won't retain the stock exhaust volume but it won't be very loud either. Secondary cat delete adds a little volume and catless downpipes will add a little volume plus add some raspiness. It's hard to explain. I cut the secondary cats out of my stock exhaust. It's not loud at all, it just makes the exhaust note more noticeable. I also heard in person the stock exhaust with just catless downpipes and it sounded great. For what you're asking and trying to do I think you'll be happy with it. __________________
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