[a7med606]

I want to order a catless downpipe but i dont want to lose the warranty. Will the dealer find out that i am using a catless downpipe?
Thanks in advance.

[Syndicategt]

Please use the search function or google to ask these questions, which have been asked a million times in the past. It's just creating more clutter on the forums.

Long story short, they can't just blanket void a warranty for downpipes. Now if your turbos start smoking and need to be replaced, they could refuse to work, or replace, those turbos. But then again, US laws might not be the same as Bahrain.

I'd be more concerned about your country's (state's) laws vs. warranty. Here in the US, it can be punishable by the EPA in fines or jail time by going catless.

[jetblackcoupe]

if you constantly bring the car to the dealer with the catless downpipes, chances are they'll notice. technically they can't void warranty unless they prove that the problem originated from the catless downpipes, but it varies from dealer to dealer. safest way to do things would be to replace the downpipes every time you go in to the dealer for service, but that can get really annoying

[Mike@N54Tuning.com]

Usually there are no issues but if you want any form of turbo work under warranty then the DPs have to be removed.

Mike

[clairvoyant]

Hypothetically speaking, if there is any turbo issue irrelevant to catless downpipes such as turbo seal leaks, excessive wastegate rattles, etc, etc, will the dealer automatically refuse all services under warranty?

Originally Posted by Mike@N54Tuning.com

Usually there are no issues but if you want any form of turbo work under warranty then the DPs have to be removed.

Mike

[tres]

dealers differ from state to state bottom line is the dealer will look out for their interest aka MAKE MONEY

[zerep1]

they make money on labor its the bmw that asks if there are any modifications if it were up to them they would replace the an engine every single time something went wrong

[chinesechicken]

So if I wanted to get brand new turbos and seals. Can I just bring in my car and tell them to replace both and then upgrade to castless DPs?

[a7med606]

ok i have anther question about the catless down pipe

i know that if i installed the catless down pipe check engine light will appear in the dash
is there anything i can do so that the check engine light will not come ???
and also the bmw dealer have the smart key reader
if any error message you get in the car it will be saved in the smart key
so they will read the error message like check engine or transmission fault etc

[PKumarM3]

honestly, if u haven't done research - and the information is out there - perhaps you should not modify your car.

you are getting in over your head.

keep the car stock. when you can afford for the motor to blow and replace it on your own - thats when you should consider modifying the car.

[Bash335i]

Originally Posted by a7med606

ok i have anther question about the catless down pipe

i know that if i installed the catless down pipe check engine light will appear in the dash
is there anything i can do so that the check engine light will not come ???
and also the bmw dealer have the smart key reader
if any error message you get in the car it will be saved in the smart key
so they will read the error message like check engine or transmission fault etc

This does not always apply though
I had catless downpipes for almost a year and no engine check light ever appeared
And I did take it to the dealer few times since....I guess they just couldnt be bothered to check

[a7med606]

Originally Posted by Bash335i

This does not always apply though
I had catless downpipes for almost a year and no engine check light ever appeared
And I did take it to the dealer few times since....I guess they just couldnt be bothered to check

which tune you are using for ur car ???
and which downpipe ?

[Bash335i]

Originally Posted by a7med606

which tune you are using for ur car ???
and which downpipe ?

Stock tune so far

I have Agency Power 3" DPs

[Akopley]

How can going catless not throw an engine code?

[hemi to e90]

Originally Posted by Akopley

How can going catless not throw an engine code?

search function would have yeilded the following results

1. DP fix
2. tunes dont throw a CEL code with DPs