PE install questions

[Mark16q]

I just couldn't resist the chance to get a little more rumble from the car. The Eurotuner article really made me think twice with the comments of reduced hp, but hoping mine will run at least the same as stock. So it's been ordered and will hopefully arrive next week.

In the meantime, I've ordered a chain pipe-cutter and have a couple of questions :

1. When cutting the mid-pipes, should I cut to exactly the same length as the piece replacing, or cut a bit extra so the pipes aren't actually touching. Concerned that if touching might get some rattling.
2. Can this be done on rhino ramps, or not enough room. Want to do the job myself but thinking just the rhinos might not be enough work space.

Thanks,

Mark

[RaihaX]

Do you have a link to that article? curious to have a read.

[Mark16q]

Originally Posted by RaihaX

Do you have a link to that article? curious to have a read.

Here's the article I'd found when searching for answers to my install questions. Good pics of the process of putting it on, but not clear on my first question about exactly where to cut mid-pipes.

http://www.eurotuner.com/techarticle...ust/index.html

[RaihaX]

Originally Posted by Mark16q

Here's the article I'd found when searching for answers to my install questions. Good pics of the process of putting it on, but not clear on my first question about exactly where to cut mid-pipes.

http://www.eurotuner.com/techarticle...ust/index.html

Sorry can't help you with that - i got mine done at the shop

thanks for the article though.

[delta-9-ginseng]

Interesting article...

[Pablito1702]

Originally Posted by Mark16q

In the meantime, I've ordered a chain pipe-cutter and have a couple of questions :

1. When cutting the mid-pipes, should I cut to exactly the same length as the piece replacing, or cut a bit extra so the pipes aren't actually touching. Concerned that if touching might get some rattling.
2. Can this be done on rhino ramps, or not enough room. Want to do the job myself but thinking just the rhinos might not be enough work space.

Thanks,

Mark

You need to find specific BMW directions on how to cut the mid-pipe. The Y-pipe that comes with the PE exhaust actually slides inside the mid pipe before the clamps are installed. Check with who you purchased the exhaust from and confirm there are cutting instructions.

[Mark16q]

Originally Posted by Pablito1702

You need to find specific BMW directions on how to cut the mid-pipe. The Y-pipe that comes with the PE exhaust actually slides inside the mid pipe before the clamps are installed. Check with who you purchased the exhaust from and confirm there are cutting instructions.

I've found a couple of threads stating that the exhaust doesn't come with instructions, and from the eurotuner and other threads I've seen, they don't slide over each other. Guess I'll find out when the parts arrive, but it appears that the coupler doesn't allow or call for any overlap?

[RaihaX]

Originally Posted by Mark16q

I've found a couple of threads stating that the exhaust doesn't come with instructions, and from the eurotuner and other threads I've seen, they don't slide over each other. Guess I'll find out when the parts arrive, but it appears that the coupler doesn't allow or call for any overlap?

Looking at my stock midpipes there doesn't seem to be any over lap.

Will need to unscrew the clamp when I get home to see exactly what they did.

[Pablito1702]

Originally Posted by Mark16q

I've found a couple of threads stating that the exhaust doesn't come with instructions, and from the eurotuner and other threads I've seen, they don't slide over each other. Guess I'll find out when the parts arrive, but it appears that the coupler doesn't allow or call for any overlap?

I removed the PE Exhaust Y pipe and original mid-pipe from a dealer installed PE system to install an N55 midpipe. I removed the clamps assuming the two pieces would just come apart. Once the clamps were off it was obvious the pipes were tightly inserted into each other and I could not get them to just slip apart. I assume it is done this way to eliminate potential leaks at the joint.

[Mark16q]

Originally Posted by Pablito1702

I removed the PE Exhaust Y pipe and original mid-pipe from a dealer installed PE system to install an N55 midpipe. I removed the clamps assuming the two pieces would just come apart. Once the clamps were off it was obvious the pipes were tightly inserted into each other and I could not get them to just slip apart. I assume it is done this way to eliminate potential leaks at the joint.

My PE arrived today, so guess I'll have to wing it. Your comment isn't what I've taken from other posts but does make some sense. Do you remember how much overlap there was???

Or maybe they left the pipe a bit long and did the overlap to get things lined up. If the tubing is the same size, will probably be a hassle to insert into each other.

Thanks for any input or pics you may know of out there.

mg

[Mark16q]

Originally Posted by RaihaX

Looking at my stock midpipes there doesn't seem to be any over lap.

Will need to unscrew the clamp when I get home to see exactly what they did.

If you were able to do this, I'd be awfully grateful.

Thanks!

mg

[Pablito1702]

Originally Posted by Mark16q

My PE arrived today, so guess I'll have to wing it. Your comment isn't what I've taken from other posts but does make some sense. Do you remember how much overlap there was???

Or maybe they left the pipe a bit long and did the overlap to get things lined up. If the tubing is the same size, will probably be a hassle to insert into each other.

Thanks for any input or pics you may know of out there.

mg

Since the pipes were inserted and they were too tight to get them apart I don't know what the "overlap" is. But the pipes ARE NOT the same size, they are designed to insert into each other. BMW must have a service or installation bulletin on this.

[Mark16q]

Originally Posted by Pablito1702

Since the pipes were inserted and they were too tight to get them apart I don't know what the "overlap" is. But the pipes ARE NOT the same size, they are designed to insert into each other. BMW must have a service or installation bulletin on this.

I've searched high and low and haven't found any paperwork on the install. Plenty of other threads where people were looking for it but never found anything other than some fuzzy pictures showing the job after. But if the pipe diameters are in fact a different size, I'm going to overlap them to be safe. I'll hit the both with a micrometer before anything is cut.

Thanks,

mg

[richsnuc]

Mark,

Go to your parts store and rent a tubing expander. You can insert the mandrel into the midpipe, expand it to j u s t the right size to fit the supplied y-pipe into. The depth of the expanded section needs to be long enough to give you room to wiggle the two pipes such that you can fine tune the alignment of the tips so they fit correctly in the diffuser.

Most places will show you how to use the tool, then give you your money back when you return the tool, so it really costs you nothing.

Rich

[r_egan]

Mark,

I stopped by United BMW today and questioned them regarding the PE install. You will want to cut the midpipe so that after installing the new section the overall length remains the same. Apparently the pipes butt up against one another and are clamped together...one does not fit inside the other.

Hope this helps with the install. Let us know how it goes.

Ron

[Mark16q]

Originally Posted by r_egan

Mark,

I stopped by United BMW today and questioned them regarding the PE install. You will want to cut the midpipe so that after installing the new section the overall length remains the same. Apparently the pipes butt up against one another and are clamped together...one does not fit inside the other.

Hope this helps with the install. Let us know how it goes.

Ron

That was what I figured from all my research, and thinking I may leave a millimeter space between them to avoid squeeking or rattling. Given tolerances that should be easy enough to do in theory. The hard part that I anticipate is getting the cut in the exact same spot. The replacement pipe is a different shape so it'll be a bit of eye-balling to see where to make that cut. Maybe taking the entire pipe assembly off the car would make that easier, but until I get under the car don't know how hard it is to remove the mid-pipe section.

was going to do it yesterday as I've got my 4 hockey pucks cut to size, 4 floorstands etc but ran out of daylight and didn't want to rely on just a shop lamp under the car. And I was feeling kind of lazy

Thanks for the input...much more confident now of how to approach this. Damn, I wish this was just a straight bolt-on.....

Mark

[Eddie135]

Hi

Is it possible just to get the resonator delete and keep the rear muffler as stock.

Is there any difference for this setup?

Thanks.

[RaihaX]

Originally Posted by Eddie135

Hi

Is it possible just to get the resonator delete and keep the rear muffler as stock.

Is there any difference for this setup?

Thanks.

Just got to a local muffler shop and get them to cut out your stock resonator and weld in some straight pipes

It will be louder and probably raspier without resonator.

[Eddie135]

Originally Posted by RaihaX

Just got to a local muffler shop and get them to cut out your stock resonator and weld in some straight pipes

It will be louder and probably raspier without resonator.

The reason why I go for resonator delete from PE is in future if i go for DP's and it is too loud, I can still bolt on my factory resonator back.

[RaihaX]

Originally Posted by Eddie135

The reason why I go for resonator delete from PE is in future if i go for DP's and it is too loud, I can still bolt on my factory resonator back.

In that case just get a clamp (so you can re-clamp the stock resonator back on) you don't need to buy the straight pipes from BMW any exhaust shop can fabricate one for you.

[Eddie135]

Thanks heap Rai