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      08-02-2016, 07:42 AM   #1
SakM_5
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downpipe install questions

I have a set of AMS catless downpipes I plan on installing this week. Is there anyone on here that has done the install? how long does it take? on a scale of 1-5 how hard was it? also, did you change the gaskets? if so, between the turbo and dp or between the dp and exhaust?

Any help would be appreciated! Thanks
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      08-02-2016, 08:47 AM   #2
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Quote:
Originally Posted by chris95559 View Post
I have a set of AMS catless downpipes I plan on installing this week. Is there anyone on here that has done the install? how long does it take? on a scale of 1-5 how hard was it? also, did you change the gaskets? if so, between the turbo and dp or between the dp and exhaust?

Any help would be appreciated! Thanks
time=2 hours to cool down + 2 hours to uninstall and install new =4 hrs
scale=2.5
its recommended to change the the gaskets my car only had 4k miles on it and the gaskets were in good shape so we didn't . they are pretty cheap to get though if you decide to. I installed the catted version you are catless that will give you more wiggle room for placement, that was the hardest part to do. my shop guy also has a lift that would definitely make it easier. I would not even consider doing without a lift.
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      08-02-2016, 08:53 AM   #3
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Quote:
Originally Posted by M6Pilot View Post
time=2 hours to cool down + 2 hours to uninstall and install new =4 hrs
scale=2.5
its recommended to change the the gaskets my car only had 4k miles on it and the gaskets were in good shape so we didn't . they are pretty cheap to get though if you decide to. I installed the catted version you are catless that will give you more wiggle room for placement, that was the hardest part to do. my shop guy also has a lift that would definitely make it easier. I would not even consider doing without a lift.

According to what I've seen, a lift is not needed at all since the only thing you are doing from the bottom is removing the 4 nuts attaching to the midpipes and the rest of the job is from up top.
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      08-02-2016, 08:58 AM   #4
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heres a diagram if it helps also.
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      08-02-2016, 09:08 AM   #5
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Quote:
Originally Posted by chris95559 View Post
According to what I've seen, a lift is not needed at all since the only thing you are doing from the bottom is removing the 4 nuts attaching to the midpipes and the rest of the job is from up top.
You can do it without the lift. It just makes it so much easier to be able and stand up I'm sure, It also has other benefits to lift to inspect the underside of vehicle and be amazed at the quality and craftsmanship it took to build and take a few snapshots under there.
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      08-02-2016, 09:10 AM   #6
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Quote:
Originally Posted by M6Pilot View Post
You can do it without the lift. It just makes it so much easier to be able and stand up I'm sure, It also has other benefits to lift to inspect the underside of vehicle and be amazed at the quality and craftsmanship it took to build and take a few snapshots under there.
I wish I had access to a lift but I don't so I'm going to have to bite the bullet without a lift. As long as I can get the car high enough to crawl under and get those 4 nuts off I'm assuming I should be good?
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      08-02-2016, 09:18 AM   #7
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Quote:
Originally Posted by chris95559 View Post
I wish I had access to a lift but I don't so I'm going to have to bite the bullet without a lift. As long as I can get the car high enough to crawl under and get those 4 nuts off I'm assuming I should be good?
Here is a write up done by RPI. Its all the same.

http://www.m5board.com/vbulletin/rpi...on-f10-m5.html
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      08-02-2016, 09:20 AM   #8
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we also took one of underpanels off to make it easier to get to the bolts on the exhaust/downpipe coupling.
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      08-02-2016, 09:23 AM   #9
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Quote:
Originally Posted by 13M5F10 View Post
Here is a write up done by RPI. Its all the same.

http://www.m5board.com/vbulletin/rpi...on-f10-m5.html
Thats the same one that I used.
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      08-02-2016, 09:28 AM   #10
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Yea, I saw the RPI write up. I just wanted to hear from guys on here that had first hand experience.
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      08-02-2016, 10:40 AM   #11
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Quote:
Originally Posted by chris95559
Yea, I saw the RPI write up. I just wanted to hear from guys on here that had first hand experience.
it takes about 3 hours but if it's your first time and you don't have access to a lift it can take longer. as some have said, you don't need a lift but you will need to get underneath the car somehow. obviously it's easier with a lift.

as for the gaskets. I would replace them. they are crush gaskets and only good for single use.
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      08-02-2016, 11:13 AM   #12
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Quote:
Originally Posted by 13M5F10 View Post
it takes about 3 hours but if it's your first time and you don't have access to a lift it can take longer. as some have said, you don't need a lift but you will need to get underneath the car somehow. obviously it's easier with a lift.

as for the gaskets. I would replace them. they are crush gaskets and only good for single use.
Which gaskets? according to the diagram it only shows gaskets between the downpipe and midpipe, nothing between turbo and downpipe?
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      08-02-2016, 11:15 AM   #13
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Quote:
Originally Posted by chris95559
Quote:
Originally Posted by 13M5F10 View Post
it takes about 3 hours but if it's your first time and you don't have access to a lift it can take longer. as some have said, you don't need a lift but you will need to get underneath the car somehow. obviously it's easier with a lift.

as for the gaskets. I would replace them. they are crush gaskets and only good for single use.
Which gaskets? according to the diagram it only shows gaskets between the downpipe and midpipe, nothing between turbo and downpipe?
Correct, that's the only one I am aware of.
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      08-02-2016, 11:23 AM   #14
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And make sure you torq the bolts afterwards
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      08-02-2016, 07:08 PM   #15
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part # for crush gaskets?
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      08-02-2016, 07:41 PM   #16
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Originally Posted by TrevorM3 View Post
part # for crush gaskets?
Spacer flange 18307844741 $6.63
Gasket ring 18307843213 $16.34
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      08-02-2016, 08:56 PM   #17
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Quote:
Originally Posted by M6Pilot View Post
Spacer flange 18307844741 $6.63
Gasket ring 18307843213 $16.34


ok just one of each?


i'am putting a brand new set of cats on a car with 40k, and taking the catless dps' off the car with 40k and putting on a brand new one.

swapping.
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      08-02-2016, 11:26 PM   #18
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decided to tackle the job tonight and it took me longer then expected. i suggest to anyone who is going to do this to make sure they get an o2 socket first and a magnet would help so you don't loose screws as many are in tight places. I ended up using my old gaskets because the car only has 11k miles and they looked brand new. I lost one of the nuts holding the mid pipe to the flange, so I have to get one and do that tomorrow. Took it for a ride and the car sounds 100% different.
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      05-23-2019, 11:40 AM   #19
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Can someone explain how the gasket ring goes onto the midpipe?

I see you explained that in 12a but I thought there was only 1 gasket, now I'm realizing theres two and I did not mess with it... I ended up having fitment issues with the driver side but just blamed it on the downpipe. Could this have been because of the gasket being in the wrong spot?

This is the gasket i'm talking about:
https://www.ecstuning.com/b-genuine-...h/18307843213/
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      05-23-2019, 11:48 AM   #20
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The flat gasket slide onto the downpipe first then the sealing ring slides on afterwards. These must be fitted to the downpipe not the midpipe otherwise you will have trouble getting them together.
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      05-23-2019, 08:05 PM   #21
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Quote:
Originally Posted by Dwaynos View Post
The flat gasket slide onto the downpipe first then the sealing ring slides on afterwards. These must be fitted to the downpipe not the midpipe otherwise you will have trouble getting them together.
I used an exhaust jack to push the midpipe back into the downpipe... oops. Might have really f***d that sealing ring. I ordered some new ones.
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