[SM2]

Originally Posted by ZPrime

It's still illegal in most states, and it's also illegal federally in the US. They don't say "you can use any cat you want on the car as long as it has a cat." The laws say "you cannot tamper with the factory emissions system." Replacing a major component (the cat) with a non-factory part is generally considered "tampering."

I understand catless systems, because then you tune and then you make more power. I understand wanting more power.

I don't understand HFCs, especially without doing a tune. Unless you tune the car, you're not going to make much more power, and even if you do tune it, there isn't a lot of power to make with a cat in place.

The factory cat is sufficient to not restrict flow with the factory tune.
A HFC isn't going to do much for you without a tune... but a tune is definitely going to void your warranty.

Just looking for a little more noise.

[ZPrime]

See, that's usually what people change the catback / muffler system for...

(I "get" more noise because I also want a little bit more... I'm considering Remus. Not gonna screw with emissions components just for sound.)

[KevM2]

Yes a little more noise and also a little better turbo spooling/decreased turbo lag

[VisualEcho]

Originally Posted by ZPrime

See, that's usually what people change the catback / muffler system for...

(I "get" more noise because I also want a little bit more... I'm considering Remus. Not gonna screw with emissions components just for sound.)

I'm just the opposite, I love the sound of the car, just would like to have a bit more...and not for $3500+, so the Fabspeed SC + Dinan res delete gave me power at all rpm's, and increased sound for $1,175 total (I bought both used, install was $100 at a local shop).

[PackPride85]

Originally Posted by VisualEcho

He certainly could have been talking out of his ass, but I don't care, as long as I have it in writing (and I do) that the Fabspeed sport cat and Dinan resonator delete wasn't going to hurt my warranty, then I'm good.

I encourage everyone to do the same with their dealers, meaning get email verification so it's in writing.

They can't automatically "void" your entire warranty but any powertrain issue they can and will use that against you. Also, BMW USA has the final say usually for major power train warranty issues. A dealer can't override BMW's official warranty statement with just an email.

Small chance you'll actually have any issues where it comes up, but if so good luck.

[F87source]

Originally Posted by PackPride85

They can't automatically "void" your entire warranty but any powertrain issue they can and will use that against you. Also, BMW USA has the final say usually for major power train warranty issues. A dealer can't override BMW's official warranty statement with just an email.

Small chance you'll actually have any issues where it comes up, but if so good luck.

+1

the dealer ship will just fire that guy and say he has no authority to make the final decision and was misinformed. So whether you have it in writing or not it means nothing as BMW HQ makes the call.

[Poochie]

Originally Posted by VisualEcho

I'm just the opposite, I love the sound of the car, just would like to have a bit more...and not for $3500+, so the Fabspeed SC + Dinan res delete gave me power at all rpm's, and increased sound for $1,175 total (I bought both used, install was $100 at a local shop).

Originally Posted by VisualEcho

He certainly could have been talking out of his ass, but I don't care, as long as I have it in writing (and I do) that the Fabspeed sport cat and Dinan resonator delete wasn't going to hurt my warranty, then I'm good.

I encourage everyone to do the same with their dealers, meaning get email verification so it's in writing.

You're tampering with a federally mandated smog control device, that's a slam dunk warranty denial from BMW AG. You know, the ones that actually pays for the repairs and by extension, the paycheck of genius who's spreading misinformation.
BTW, he'll probably be gone and working for Audi, by the time you have to make a serious claim, employee turnaround is pretty common in the automotive service industry.

Why do think a "sports cat" performs better than the stock unit?

Is it because BMW secretly hates us so they stifles the exhaust flow, for spite or maybe the high-flow cat is circumventing the set emission standards and making end-run around the mandatory level of scrubbing.

I'm not some tree-hugger; as far as I see, the world is already fvcked, we're just merely adding to it, so you do whatever you please.

However, let's be real here; when it comes to BMW AG paying for the repairs of anything related to the drivetrain, having an aftermarket catalytic converter installed doesn't work in your favor, especially since there is already an 8 year or 80,000 mile federally mandatory warranty, on the stock catalyst, so you really have no excuse for interfering with it, while still covered under the manufacture's factory warranty.

[PackPride85]

Originally Posted by Poochie

You're tampering with a federally mandated smog control device, that's a slam dunk warranty denial from BMW AG. You know, the ones that actually pays for the repairs and by extension, the paycheck of genius who's spreading misinformation.
BTW, he'll probably be gone and working for Audi, by the time you have to make a serious claim, employee turnaround is pretty common in the automotive service industry.

Why do think a "sports cat" performs better than the stock unit?

Is it because BMW secretly hates us so they stifles the exhaust flow, for spite or maybe the high-flow cat is circumventing the set emission standards and making end-run around the mandatory level of scrubbing.

I'm not some tree-hugger; as far as I see, the world is already fvcked, we're just merely adding to it, so you do whatever you please.

However, let's be real here; when it comes to BMW AG paying for the repairs of anything related to the drivetrain, having an aftermarket catalytic converter installed doesn't work in your favor, especially since there is already an 8 year or 80,000 mile federally mandatory warranty, on the stock catalyst, so you really have no excuse for interfering with it, while still covered under the manufacture's factory warranty.

^^^This. When BMW asks why you replaced a perfectly good catalytic converter what's the response? "Power increase?" which will immediately be met with "Engine was not designed for additional power which led to increased stress and XXX failing". Case closed at that point.

Even if you did try and take it to court at that point not only would it take months to resolve your chances of winning are near zero.

It's really easy to avoid all of this. Have an independent shop put it on/take it off before you bring it into BMW dealer for issues. We're trying to do you a solid favor here based on a lot of previous experience with new cars under warranty and dealership issues.

[SM2]

Originally Posted by ZPrime

See, that's usually what people change the catback / muffler system for...

(I "get" more noise because I also want a little bit more... I'm considering Remus. Not gonna screw with emissions components just for sound.)

Already have M performance.

[Pray for Mojo]

Don't ever go to a dealer looking to get aftermarket stuff installed. Especially if you're looking for them to honor a warranty if something goes wrong. Always have an indy do the work or install it yourself.

If you ever have a problem with the car that could be remotely construed as being related to aftermarket parts, you need to return to stock before dropping it off. Don't get it towed there and pray to your deity they will be kind, tow the shit home and put everything back properly.

Like was said earlier, even mod friendly dealers will throw you under the bus if something ever happens. My dealer was moderately mod friendly, but even for the complimentary servicing I always took JB4 off and never spoke of any kind of modifications.

[///M TOWN]

Originally Posted by DanG

Catted or not, it is still illegal in Washington.

They don't test in Washington any longer

Even if you sell the car nobody will know and nobody will care

[DanG]

Originally Posted by ///M TOWN

They don't test in Washington any longer

Even if you sell the car nobody will know and nobody will care

Just take it in for a tuneup at any reputable shop and they will report you. They do care a lot.

[///M TOWN]

Originally Posted by DanG

Just take it in for a tuneup at any reputable shop and they will report you. They do care a lot.

Nothing personal

I think you are simply telling yourself stories

As long as there is no engine check light there's not an issue

And without a paycheck attached they will not waste their time regardless

[DanG]

Originally Posted by ///M TOWN

Nothing personal

I think you are simply telling yourself stories

As long as there is no engine check light there's not an issue

And without a paycheck attached they will not waste their time regardless

Not true. I have known people that got busted. Easy to see a downpipe. Also extremely hard to find someone who will install it.

[///M TOWN]

Originally Posted by DanG

Not true. I have known people that got busted. Easy to see a downpipe. Also extremely hard to find someone who will install it.

There is no emissions testing is Washington

I am strictly talking about a catted downpipe

If there are no codes then no issues

[DanG]

Originally Posted by ///M TOWN

There is no emissions testing is Washington

I am strictly talking about a catted downpipe

If there are no codes then no issues

I guess you never saw this thread: https://f87.bimmerpost.com/forums/sh....php?t=1552298

[///M TOWN]

Originally Posted by DanG

I guess you never saw this thread: https://f87.bimmerpost.com/forums/sh....php?t=1552298

I do my own installations, so I am not sure what your point is

And in Washington state there is zero testing regardless moving forward

[DanG]

Originally Posted by ///M TOWN

I do my own installations, so I am not sure what your point is

And in Washington state there is zero testing regardless moving forward

Let’s be honest here. You can easily see a down pipe. So who are you trying to fool. Go in for dealer maintenance and see what happens.

[///M TOWN]

Originally Posted by DanG

Let's be honest here. You can easily see a down pipe. So who are you trying to fool. Go in for dealer maintenance and see what happens.

You're way to paranoid

I have a 15 year relationship

I know the master tech personally

As well as several other key employees and the General Manager