BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > 335 supersprint high flow racing cats

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      03-12-2007, 11:23 AM   #23
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Originally Posted by all8up View Post
Yeah I noticed you lived in AZ (couple of my college friends live in Scottsdale) and they mentioned the testing there is a joke to say the least.
To give you some insight to what happens to many of us on the east coast. Emissions stations will plug in a sensor in the tail pipe and put the car under load (dyno rollers) and measure the readings. The only exception to this is if your car is AWD and their rollers cannot support that and in that case they will often just put the car in neutral and measure the readings.
wow that really sucks.... i know they put cars on the rollers here but usualy thats only if there obd1 or older .... they may measure the exhaust in park but honestly i've gone through w/o cats on my other car and didn't have a problem at all,
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      03-14-2007, 02:47 AM   #24
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what the hell are these things?

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      03-14-2007, 09:19 PM   #25
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looks great
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      03-17-2007, 02:22 PM   #26
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This is for everyone's reference...
These are two pictures of the stock exhausts (yes I have two in my garage in the moment). Anyways the last picture shows the flange that connects right at the down pipe....So those Super Sprint and Militek ones in this thread are not made for the 335
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Last edited by all8up; 03-17-2007 at 03:56 PM.
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