3" DP question

bimmerwar51 · 02-20-2011, 12:45 AM

I just purchased a 335is and wanted to know what would be the best 3" downpipes that won't throw codes. Also do they void warrenty, its a modification to the exhaust so i was thinking they wouldnt, but not sure.

NiVeDh · 02-20-2011, 01:13 AM

Catless downpipes will throw codes without an O2 simulator of some sort. Downpipes will void warranty. Do some searching... this question gets asked every day.

Bimmer This · 02-20-2011, 01:42 AM

Any aftermarket parts these days will void warranty.

alexc93 · 03-07-2011, 10:45 AM

Quote:

Originally Posted by NiVeDh

Catless downpipes will throw codes without an O2 simulator of some sort. Downpipes will void warranty. Do some searching... this question gets asked every day.

not entirely true...my dealer has no problem with downpipes

DaFish · 03-07-2011, 10:51 AM

Quote:

Originally Posted by alexc93

not entirely true...my dealer has no problem with downpipes

If anything happened, like he blew the motor.... I think the dealer would change their tune in a heart beat.....

OP, I waited until I was past my 80k warranty.. now I am going nuts. That is 3 years for you though.

Just think through it carefully.... I went Dinan because of it for the first 3 years. - that was my comfort feeling. I think there are some very safe upgrades - you already have the upgraded intercooler and oil cooler.... nice.

bimmerwar51 · 03-07-2011, 09:44 PM

Quote:

Originally Posted by alexc93

not entirely true...my dealer has no problem with downpipes

true! i found a modfriendly service advisor

Quote:

Originally Posted by DaFish

If anything happened, like he blew the motor.... I think the dealer would change their tune in a heart beat.....

OP, I waited until I was past my 80k warranty.. now I am going nuts. That is 3 years for you though.

Just think through it carefully.... I went Dinan because of it for the first 3 years. - that was my comfort feeling. I think there are some very safe upgrades - you already have the upgraded intercooler and oil cooler.... nice.

Yea im still thinking on it though thanks for the advice.

02-20-2011, 12:45 AM	#1
bimmerwar51 Lieutenant 48 Rep 442 Posts Drives: e92 335i sold, e92 335is Join Date: Jun 2009 Location: SoCal 562 iTrader: (6)	3" DP question I just purchased a 335is and wanted to know what would be the best 3" downpipes that won't throw codes. Also do they void warrenty, its a modification to the exhaust so i was thinking they wouldnt, but not sure.
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02-20-2011, 01:13 AM	#2
NiVeDh Major General 422 Rep 8,003 Posts Drives: '08 E90 335i, '99 E36 M3 Join Date: Apr 2009 Location: Houston, TX & Atlanta, GA iTrader: (132) Garage List 2008 BMW 335i Sedan [8.66]	Catless downpipes will throw codes without an O2 simulator of some sort. Downpipes will void warranty. Do some searching... this question gets asked every day.
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02-20-2011, 01:42 AM	#3
Bimmer This Major General 99 Rep 6,473 Posts Drives: 2007 BMW 335i Join Date: Nov 2008 Location: Westminster iTrader: (3)	Any aftermarket parts these days will void warranty.
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