Passing emissions with catless DP and JB4

sshah261 · 07-31-2019, 08:48 PM

Hey all,

Is there a fix to pass emissions with catless downpipes and a JB4 installed, without having to take the JB4 apart?

Please say there is

already failed or rejected once!

Bmw doubles · 08-01-2019, 01:41 AM

Quote:

Originally Posted by sshah261

Hey all,

Is there a fix to pass emissions with catless downpipes and a JB4 installed, without having to take the JB4 apart?

Please say there is

already failed or rejected once!

Look up 02 simulators

sshah261 · 08-01-2019, 07:33 AM

Quote:

Originally Posted by Bmw doubles

Quote:

Originally Posted by sshah261

Hey all,

Is there a fix to pass emissions with catless downpipes and a JB4 installed, without having to take the JB4 apart?

Please say there is

already failed or rejected once!

Look up 02 simulators

I have this DP fix, does anyone have instructions on installing it?

ezaircon4jc · 08-01-2019, 01:49 PM

Quote:

Originally Posted by Bmw doubles

Look up 02 simulators

Have you passed emissions yet with aftermarket intake pieces?

Bmw doubles · 08-01-2019, 11:56 PM

Quote:

Originally Posted by ezaircon4jc

Quote:

Originally Posted by Bmw doubles

Look up 02 simulators

Have you passed emissions yet with aftermarket intake pieces?

Passed, removed everything but the fmic, ps2, and sprint booster. This week will be the post DP exhaust dump and swapping out the hpfp. Pew pew. Stage 2+ tune already back on!

ezaircon4jc · 08-02-2019, 12:18 PM

Quote:

Originally Posted by Bmw doubles

Passed, removed everything but the fmic, ps2, and sprint booster. This week will be the post DP exhaust dump and swapping out the hpfp. Pew pew. Stage 2+ tune already back on!

Sounds like A LOT of work... I'm getting (already there?) too old for this type of back-and-forth work! I know the electronic stuff and FMIC won't be detectable.

Bmw doubles · 08-03-2019, 12:46 AM

Quote:

Originally Posted by ezaircon4jc

Quote:

Originally Posted by Bmw doubles

Passed, removed everything but the fmic, ps2, and sprint booster. This week will be the post DP exhaust dump and swapping out the hpfp. Pew pew. Stage 2+ tune already back on!

Sounds like A LOT of work... I'm getting (already there?) too old for this type of back-and-forth work! I know the electronic stuff and FMIC won't be detectable.

Yeah the biggest pain is the DP but I'm leaving the stock on and putting an exhaust dump immediately after it for track days. Looking at M5s now they're totally in the affordable range now. You know how the mod bug goes though

lsturbointeg · 08-03-2019, 07:22 AM

ahhhhh how I don't miss those days of trying to get my car to pass emissions back when I lived in San Diego. out here in OH we don't have emissions so we can run as illegal as you want.

07-31-2019, 08:48 PM	#1
sshah261 Second Lieutenant 28 Rep 259 Posts Drives: 2011 535i xDrive Join Date: Mar 2016 Location: Chicago, IL iTrader: (0)	Passing emissions with catless DP and JB4 Hey all, Is there a fix to pass emissions with catless downpipes and a JB4 installed, without having to take the JB4 apart? Please say there is already failed or rejected once!
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08-03-2019, 07:22 AM	#8
lsturbointeg Lieutenant General 9153 Rep 14,522 Posts Drives: 2011 535i Jet Black Join Date: Aug 2014 Location: Asian lost in OH iTrader: (0)	ahhhhh how I don't miss those days of trying to get my car to pass emissions back when I lived in San Diego. out here in OH we don't have emissions so we can run as illegal as you want. __________________ ~F90Conversion~21"3Piece Forged AvantGardeWheels~KWV1Coilovers~CQUENCE slotted/drilled rotors~GoodridgeStainlesslines~MeisterschaftQuadEx haust~Akrapovic 4"tips~VRSF DP~VRSF CP~TurboSmart BOV~K&N filter~CarbonFiberExteriorComponents~GladenAlphaCo mponents~MatchUp7BMW~Punch P300-12T~ Follow me on Instagram: lsturbointeg
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