Smoke and Catless Downpipes

[JabonYetty]

Originally Posted by livnpaintball2

If you get BMW to cover it with all of your mods you hit the Lotto!

The downpipes are not a problem only pre-turbo. And the tune obviously.

[livnpaintball2]

Originally Posted by darkrom

Only the downpipes have to go. Dealerships don't try to claim catbacks or intakes kill turbos, but if they see the downpipes they will raise hell.

If they see the JB4 "Game Over". Unless they are the coolest dealership in the world.....

[livnpaintball2]

Originally Posted by JabonYetty

The downpipes are not a problem only pre-turbo. And the tune obviously.

Removing emission equipment not a problem?? Service departments are there to make money..

[JabonYetty]

Originally Posted by livnpaintball2

Removing emission equipment not a problem?? Service departments are there to make money..

Well i have a friend in bmw service and the basically said bmw doesn't need to know i have downpipes. lol

[livnpaintball2]

Now the truth comes out, don't mislead people thinking they can go into a dealership with a modded car and expect it to get fixed under warranty.

That's nice you have a hook up! Wish I did...

[JabonYetty]

Originally Posted by livnpaintball2

Now the truth comes out, don't mislead people thinking they can go into a dealership with a modded car and expect it to get fixed under warranty.

That's nice you have a hook up! Wish I did...

Yes that obviously helps, but he told me that the downpipes would have no bearing on the turbo or the seals going. and they are warrantied up to 80k miles. More dealerships are going to be more strict than others.

[livnpaintball2]

Originally Posted by JabonYetty

Yes that obviously helps, but he told me that the downpipes would have no bearing on the turbo or the seals going. and they are warrantied up to 80k miles. More dealerships are going to be more strict than others.

I have to disagree, the reason the turbos have the 80k warranty is for the wastegate rattle, not the seals. The seals are considered a wear item and are not usually covered. There are plenty of post covering the turbo warranty.

You should buy your friend concert or ball game ticket because he is doing you a solid!

[darkrom]

Originally Posted by livnpaintball2

If they see the JB4 "Game Over". Unless they are the coolest dealership in the world.....

While my SA is my friend, he said they have cars with JB4s all the time. The techs come in and say "OBD won't read!?!" and he just says "did you turn off the tune?".

It depends what your doing, and where I guess. If you are going in for a new motor under warranty, yeah have it without a tune. Luckily that really doesn't happen on this platform and we deal with turbo failures, water pumps HPFP etc. No actual motor failure for the most part. Most dealerships aren't going to check every car for a JB4 in the engine bay, just keep it off and you will be fine if its anything but extremely unusual warranty work IMO. They would have to pay their techs to spend man hours looking for tunes on all their performance cars. That time adds up. Also, the dealership WANTS to do work. If you go in for warranty turbo job, the dealership gets paid by BMW. If they say "not under warranty you have a tune" what do you do, drop $4k, or walk out the door and have it done at an indie for a fraction of the cost? Then the shop loses money because they wanted to try to screw you over for having a tune? It doesn't make sense. Downpipes are something they can't seem to overlook, being illegal in almost every state.

[Hellkite]

Just went threw this myself and I went and got brand new Rb turbos. You should really look into a valve cover also. There are 3 valves in the valve cover. 1 pvc, 2 vacuum valve 3 boost valve. One of them could be stuck open. Just food for thought 30 k on turbos and they are blows sounds unlikely. Just my 2 cents. Good luck anyway

[MaDoNiOn]

My friend did the same with his mazda mps and it smoked strait after a few minutes.he went to turbo maniacs.. and he said once the cats have been taken out u must never make the oil Full.. must be 3/4 cause then the oil pressure becomes too much. Anyone ever heard of that?

[Hellkite]

No

[Aode06]

Run the car 1 quart low , meter will show in the middle safe zone but not full zone.
Thats what works best on all catless BMWs .
Enjoy

[Info@mad-us.com]

Blue whiteish smoke is oil burning from a small leak int he turbo. Catted downpipes can sometimes mask it slightly.