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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Too many DP's to choose from...help.



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      06-14-2016, 05:33 PM   #23
Cory S
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Awesome. What's the cell count?
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      06-14-2016, 05:38 PM   #24
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200 CPI, anything higher and you might as well stick with the OEM downpipe

Last edited by Tiago@VRSF; 07-07-2016 at 04:40 PM..
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      06-14-2016, 05:40 PM   #25
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Awesome! Should still flow 50-59% better than stock.
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      06-15-2016, 12:00 AM   #26
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Quote:
Originally Posted by Tiago@VRSF View Post
300 CPI, anything higher and you might as well stick with the OEM downpipe
What's the prices range Tiago? I looked on vrsf website an couldn't find it
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      06-15-2016, 12:05 AM   #27
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Not on the website yet, $529 shipped, you can order it direct from us.

Last edited by Tiago@VRSF; 07-07-2016 at 04:40 PM..
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      06-15-2016, 06:35 AM   #28
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Originally Posted by Tiago@VRSF View Post
Not on the website yet, $469 shipped, you can order it direct from us.
Is there any difference is potential power/output between your catted and catless?
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      06-15-2016, 07:11 AM   #29
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I'm guessing, with a 300 cell count, very minimal. Maybe 3-5hp less than catless..
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      06-15-2016, 11:18 AM   #30
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Any links with testing, dyno etc please?
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      06-15-2016, 01:37 PM   #31
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No dynos yet but you can expect to make around 10-12whp with a catted solution vs a 18-25whp with catless. A high flow cat is going to flow better than the stock cat but you're adding post turbine restriction and back pressure which isn't ideal in comparison to a catless solution.
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      06-16-2016, 07:11 PM   #32
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Tiago, what brand is cat please?

how do manage such a low entry price point (not complaining)?
Just trying to understand product quality - estimated longevity etc
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      06-17-2016, 04:14 PM   #33
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Originally Posted by maxihari View Post
Tiago, what brand is cat please?

how do manage such a low entry price point (not complaining)?
Just trying to understand product quality - estimated longevity etc
They are using Magnaflow cats.

http://www.e90post.com/forums/showthread.php?t=1255629
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      06-17-2016, 04:22 PM   #34
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I will just chime in as well.. They're all pretty much the same. Marginal difference for the costs.
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      06-17-2016, 05:39 PM   #35
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Quote:
Originally Posted by mashimarho View Post
I will just chime in as well.. They're all pretty much the same. Marginal difference for the costs.
I would think that may be true for catless DPs, since they are basically an empty tube. For catted DPs the cat itself becomes the most important factor differentiating the available products, but there are no head to head comparisons available. Even descriptions of the cats themselves are hard to come by. VRSF and Cobb are probably similar since they both use Magnaflow cats.
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      06-19-2016, 07:07 PM   #36
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Quote:
Originally Posted by Jeff@TopGearSolutions View Post
Majority of that price difference is the cost difference between Catless and catted.

Once you figure that out it's pretty simple.

When going catted, stick with high quality cats. The cheap cats degrade faster.

In essence, you get what you pay for.

We sell a bunch of VRSF DP's, very popular for going catless.


This.... ^ .... There is a cost difference for a reason.
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