2.25" vs. 2.5" X-Pipe?

[KyleNatolix5]

Yea that is a lot to install an x pipe. I payed 80 bucks to install mine

[ukrcan]

yeah... i believe it... we pay stupid prices when it comes to anything labour related...

[bcredliner]

Originally Posted by J.Belknap

2.25" inlets, 2.5" outlets. Recommend Dr. Gas x-pipe

Does the X pipe replace the H pipe and is the pipe 2.5" at that point?

[racingbmwm3]

Originally Posted by ukrcan

yeah... i believe it... we pay stupid prices when it comes to anything labour related...

I think its because of your spelling of 'labor'. Fancy spelling means fancy prices.

Looking at the comparisons of Hpipe vs Xpipe, I think I'd stick with the better rumble sound of the Hpipe for driving around town. Unless someone can show that MPG increases with the Xpipe.

[Gurjit]

4.8is X5 with x-pipe - YouTube
better throttle response at higher rpm is noticible
hwy more power that you can feel
havnt noticed loss of torque

[ukrcan]

Originally Posted by Moezer

.... I went in to my muffler shop and asked them how much it would be for an X pipe for the x5 he said around 4 to 500 is that normal

Just talked to my muffler shop today... they said around $250 to fabricate a custom x-pipe... or around 100 - 150 to install one if you bring your own... so it should be not more than $300 all in...

[Moezer]

Originally Posted by ukrcan

Just talked to my muffler shop today... they said around $250 to fabricate a custom x-pipe... or around 100 - 150 to install one if you bring your own... so it should be not more than $300 all in...

thing is what X pipe should we go with, cheap 60$ ebay one or 150 megna flow one lol

[Gurjit]

cost mee 300 inckuding xpipe and new hangers

[Helihover]

I was quoted 175 for a resonator delete. No X pipe and he told me that he would cut the flanges off. I take it these $40-$60 x pipes (which I still can't find) don't come with flanges. I would love to find an x pipe with flanges so I could do the install and be able to take it back out.

Can someone please post a link to these $40-$60 x pipes.

Edit: I searched again and found a bunch non specific to BMW. So looks like the flanges must go unless you have one custom made with flanges which doesn't sound like a bad idea. The muffle shop wouldn't have to touch the X or know what it's for. Might be able to save a few bucks if you told them it was going on a 1982 chevy truck

[bcredliner]

If your goal is a 'better' sound by way of an X pipe, it won't matter which X pipe you choose, assuming the diameters are the same. As far as longevity, it might matter how it is built and the thickness of the tube walls.

If you want or also want to improve performance, "theoretically", the X pipe will increase scavenging. The greatest benefit of scavenging is a lower RPMs. As the RPMs increase scavenging decreases. I think the scavenging benefit will be minimal. Greater scavenging is not always good.

I think the best route to improve the sound and gain performance would be to remove or replace the resonators or mufflers with less back pressure versions. Less back pressure is always good.

There is the potential, no matter what you choose to do, that the change will create a drone in the cabin. Over time or when driving a longer distance the drone can be very annoying. To be sure that didn't happen I would do something someone else has already done so I would know what my X would sound like and if there was any resulting drone.