JB3+ Catless Downpipes

E92AXM · 02-10-2009, 09:22 PM

Is it true that a jb3 when coupled with a set of catless downpipes yields very little performance gain? Ive conducted from the searching ive been doing that the procede seems to react a little bit better to them because of specialized maps..

335ievo · 02-10-2009, 10:09 PM

I'm pretty sure the difference is very minimal

Former_Boosted_IS · 02-11-2009, 05:19 AM

Quote:

Originally Posted by 335ievo

I'm pretty sure the difference is very minimal

Well, I am not pretty sure because I have them. In fact the difference is noticeable. I have the AR dps and just love them.

E92AXM · 02-11-2009, 08:09 AM

anyone do dynos before and after??

RMA · 02-11-2009, 08:14 AM

I was tossing around this idea as well right after my JB3 install, but instead decided to go with a FMIC instead especially for the fact of our extreme summers here in Fl.

E92AXM · 02-11-2009, 08:56 AM

Yeah I actually decided that id order an intercoooler first for that reason . But downpipes sound sweet but id rather not waste the money if it didn't do much in performance aspects.

BavarianBullet · 02-11-2009, 12:14 PM

Quote:

Originally Posted by SiNiStErE92

Is it true that a jb3 when coupled with a set of catless downpipes yields very little performance gain? Ive conducted from the searching ive been doing that the procede seems to react a little bit better to them because of specialized maps..

You could just ask Terry...

http://www.n54tech.com/forums/showth...npipe+increase

I think he tends to quote around at least 15HP but with mods perhaps 20.

BB

02-10-2009, 09:22 PM	#1
E92AXM First Lieutenant 117 Rep 313 Posts Drives: 335i Join Date: Sep 2008 Location: Fl iTrader: (0)	JB3+ Catless Downpipes Is it true that a jb3 when coupled with a set of catless downpipes yields very little performance gain? Ive conducted from the searching ive been doing that the procede seems to react a little bit better to them because of specialized maps..
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02-10-2009, 10:09 PM	#2
335ievo Your'e gonna learrrrrrnn tooooday 39 Rep 595 Posts Drives: 2013 BMW 328i M Sport EB Join Date: Mar 2008 Location: ATL, Georgia iTrader: (1)	I'm pretty sure the difference is very minimal __________________ 2013 BMW 328i MSport F30 - Estoril Blue "Minds are like parachutes. They only function when they are open." James Dewar
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02-11-2009, 08:09 AM	#4
E92AXM First Lieutenant 117 Rep 313 Posts Drives: 335i Join Date: Sep 2008 Location: Fl iTrader: (0)	anyone do dynos before and after??
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02-11-2009, 08:14 AM	#5
RMA Major 39 Rep 1,015 Posts Drives: 2009 135i M sport coupe Join Date: Jul 2008 Location: Tampa, Fl iTrader: (6) Garage List 2009 135i M sport c ... [0.00]	I was tossing around this idea as well right after my JB3 install, but instead decided to go with a FMIC instead especially for the fact of our extreme summers here in Fl. __________________
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02-11-2009, 08:56 AM	#6
E92AXM First Lieutenant 117 Rep 313 Posts Drives: 335i Join Date: Sep 2008 Location: Fl iTrader: (0)	Yeah I actually decided that id order an intercoooler first for that reason . But downpipes sound sweet but id rather not waste the money if it didn't do much in performance aspects.
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