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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning What is the catch of using a catless downpipe?

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      06-04-2021, 12:20 AM   #23
AlexGT
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Quote:
Originally Posted by Firoj View Post
So first off you will see the best HP gains from a catless, as it reduces back pressure to the turbo, which makes it spool up faster, as well I have heard of it also increasing the life of the turbo.

As of now i have not heard of any long term problems of using a catless dp.

Your car will definitely be louder but it depends really on how loud you want your car. Of what I have heard, I personally love the sound!

And now to the smell. You will definitely smell raw fuel every once in awhile, mostly when you are at a stop light or parked. I believe it's stronger with the windows down. For me it's not really that bad and I have a pretty damn good sense of smell https://19216801.onl/ https://routerlogin.uno/.

Now to the CEL errors... Yes you will have them. There are 2 ways to get rid of this as far as I know. One is the solution most people use, which is to get a tune for your car, tunes will have software that will automatically cancel out CEL errors. The second one is to buy a catless dp with a cat simulator. As of now the only company I know of that makes these is Armytrix. It plugs into the sensor on the cars side to trick it into thinking it has a stock cat on the dp. It comes optional with the purchase of their exhaust system. By the way I am buying the Armytrix w/ catless dp w/ cat simulator this spring so that is how I know this.
You’ve been reported, go scam and phish other place.
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      06-05-2021, 10:29 AM   #24
jb-slow
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You’ve been reported, go scam and phish other place.
You reported a post from 6 years ago?
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      06-05-2021, 12:20 PM   #25
AlexGT
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Quote:
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Quote:
Originally Posted by AlexGT View Post
You’ve been reported, go scam and phish other place.
You reported a post from 6 years ago?
No, I reported the reply from "firoj" (posted 3 days ago) who literally copy and pasted a previous reply from 6 years ago who was posted by another member. This reply was a phishing reply as he added a phishing link.

That "firoj" user has been banned as well
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