Just installed my AMS Downpipes

[Eddybro]

Just installed my AMS downpipes! Took me about 2 1/2 to compete.

The sound is amazing and I freaking love it!

There is some rattle tho and I have been reading about the same issue some other people are having with the AMS downpipes rattle.

Other than that I'm super happy, CEL is on, so I'll be getting JB4 soon to get rid of that!

[TrevorM3]

Tips?? Looking to do this myself

[Eddybro]

Originally Posted by TrevorM3

Tips?? Looking to do this myself

Get it done! You won't regret it. It sounds amazing.

If your getting the AMS downpipes you might need to get longer bottom o2 sensor wires. I was able to run the o2 sensor wires under the heat shield and bracket for the DMEs also make sure you get new gaskets (thanks allmotor) for the bottom of the down pipes where it connects to the rest of the exhaust.

The gaskets are supposed to stop the rattle, but I'm guessing it's inevitable. I might contact AMS to see if they have a fix for it.

What brand are you going with ?

[TrevorM3]

No idea. They were in my dads car when he bought it. But im going to swap it out and put it on my incoming m5

[Eddybro]

Originally Posted by TrevorM3

No idea. They were in my dads car when he bought it. But im going to swap it out and put it on my incoming m5

Nice! Catless?
Yes I think the car should have sounded like this from the factory..
The turbo spool sound is bonkers!

[apexlocator]

You seem mechanically-inclined. Your 2.5 hours would = 10 hours for me + any MacGyver factors.

[Eddybro]

Originally Posted by apexlocator

You seem mechanically-inclined. Your 2.5 hours would = 10 hours for me + any MacGyver factors.

Lol not really mechanically inclined, just worked on a lot of the cars I owned (40+ cars), I think having the right tools was the key.

Did it at my buddy's shop with him, after hours so I had full access to the tools and lift so it made everything a lot easier.

Also one of his buddies who is a BMW tech, showed up during the end of the process, so he kinda steered us through the end of the process

[TrevorM3]

Everything done from up top?

[Eddybro]

Originally Posted by TrevorM3

Everything done from up top?

95% of the work is done from top.
You have disconnect the downpipes from exhaust from under the car. Two bolts each pipe if I remember correct.

Getting it lined up from the top, into the exhaust was a little challenging. And you might need to grind down the washer, atleast I did a little to make it fit better. Might be just with the AMS pipes.

[TrevorM3]

ecu's have to be removed completely?

[Eddybro]

Originally Posted by TrevorM3

ecu's have to be removed completely?

Nope, just push them off to the side of you have zip ties, just use them to keep them out of the way.

[TrevorM3]

hmm, may just remove them at once and send ecu's out to get tuned while im in there.

[allmotor_2000]

Good job man!

[RPiM5]

I've got a BMS CAN CEL Delete Tool for sell if you don't want to go through all of the trouble of installing a JB4.

[boots]

This^^^this

[Eddybro]

Originally Posted by RPiM5

I've got a BMS CAN CEL Delete Tool for sell if you don't want to go through all of the trouble of installing a JB4.

Tell me more..

[M5 addict]

Did you feel any power loss?

[Nikolov]

I'm on the fence of getting downpipes + JB4, what's holding me back is the mentioned rattle and possible drone. I have a Supersprint exhaust and it already has a very mild drone at low RPM. I'm afraid it might get worse after I get downpipes. A guy I know with the same exhaust had Supersprint downpipes installed + JB4 and he said there's rattle from the downpipes when they get hot and noticeable drone at 3k rpm...

Anyone else can share their input on the drone/rattle?

[M5Beast_NYC]

nice. cant wait to get downpipes as well!!

[Eddybro]

Originally Posted by M5 addict

Did you feel any power loss?

Nope, why?

[Eddybro]

Originally Posted by Nikolov

I'm on the fence of getting downpipes + JB4, what's holding me back is the mentioned rattle and possible drone. I have a Supersprint exhaust and it already has a very mild drone at low RPM. I'm afraid it might get worse after I get downpipes. A guy I know with the same exhaust had Supersprint downpipes installed + JB4 and he said there's rattle from the downpipes when they get hot and noticeable drone at 3k rpm...

Anyone else can share their input on the drone/rattle?

Only one way to find out

[apexlocator]

Originally Posted by Nikolov

I'm on the fence of getting downpipes + JB4, what's holding me back is the mentioned rattle and possible drone. I have a Supersprint exhaust and it already has a very mild drone at low RPM. I'm afraid it might get worse after I get downpipes. A guy I know with the same exhaust had Supersprint downpipes installed + JB4 and he said there's rattle from the downpipes when they get hot and noticeable drone at 3k rpm...

Anyone else can share their input on the drone/rattle?

If you've already got some drone, then catless downpipes will only amplify it.