Supersprint X-Pipe Question - The Unofficial BMW M5 Messageboard (m5board.com)

Tom Burns · 8th October 2004, 05:28

Hi All.

I'm thinking of getting the Supersprint X-Pipes (from Beastpower of course), and had a couple of questions for anyone who has installed them.

1-I'm sure they sound very nice, but I'm concerned about how much louder they are. I know it's tough to describe in words, but I really need to get a handle on how loud they are going to be compared to the stock resonators. I do a lot of highway cruising, so I don't think I'd like them so loud as to be overly intrusive (competing with the radio/cd).

2-Are they worth it? (No offence, Beastpower). But what do these pipes offer over a set that could be fabricated by my race shop guys?

Thanks

BostonRocket · 8th October 2004, 06:20

If it's going to be paired with the stock exhaust cans, you wont' see much sound change. Don't worry.

BTW, even with a full exhaust system on the M5, it is NEVER intrusive at all, especially on the highway. The car is very well insulated. The note of the aftermarket exhausts tend to get raspier.

'Rocket

TCM · 8th October 2004, 06:24

I concur with 'Rocket. This is a definate mod in my book as it helps throttle response and has more of an overall effect thena muffler. Coupled with a stock system, it gets a bit more burbly but is a pita to install as the piping is the same size. Coupled with an aftermarket unit, you increase the noise level by about 25% or so but it does not resonate to the point of annoyance for most people. Hope this helps.

BostonRocket · 8th October 2004, 06:29

As far as coupling it to a stock exhaust, the "noise" gain would be like 5-10%. So basically no difference.

'Rocket

RRoberts · 8th October 2004, 06:52

I have just installed a SuperSprint X-pipe and Dinan "mufflers". Throttle response is much improved, and the weight difference must be more than 50 lbs., but this setup is LOUD. The noise is not intrusive when cruising on the highway, or even around town with the windows rolled up. But full throttle will be noticed. Maybe it's my imagination, but I swear I can notice the absence of all that heavy stuff moving around under the car. I'm still considering whether this was a completely smart move, but I love the improvement in acceleration. I may add a couple of bullet mufflers to the X-pipe to take out the harshness.

BTW, the exhaust noise is much more pleasant to my ear than the former single-mass flywheel rattle. Also more pleasant than Civics with fart cans.

With regard to making your own X-pipe, this obviously can be done. I work part-time in a race shop these days, and know what the charge rate is. The SuperSprint part is sufficiently inexpensive and well made that I think you will end up paying about the same for a custom made duplicate. The attachment to the cats is particularly well designed, the tubing is flattened where it needs to be, has the factory hanger tabs, is constructed of 304 SS, and fits perfectly. In addition, 2.5 inch 304 tube material is not cheap. You could use carbon steel, but everything else in the exhaust system is SS. I always elect to buy the part if it is well made, and the purchase price is near what would be required to make it myself.

Regards, Dick Roberts

MAH · 8th October 2004, 17:11

Get the x-pipe. It is easy to reverse if you do not like it or you want to upgrade to a Tubi exhaust which is whjat I did. I had the x-pipe for almost two years with the OEM exhaust. The resonators alone weight about thirty pounds so there is some weight savings and you will notice a difference in the way the car accelerates.

It will increase the the exhaust note and make it deeper. You will notice it, but just barely. You do pick up a great burble on deacceleration. Over time, at least a year, it will grow deeper and louder, but the sound is very nice and it never intrudes into the cabin.

This is one of the best and least expensive mods for the M5 and it is completely reversable.

Mark

foxyboym5 · 8th October 2004, 19:07

Quote:

Originally Posted by BostonRocket

If it's going to be paired with the stock exhaust cans, you wont' see much sound change. Don't worry.

BTW, even with a full exhaust system on the M5, it is NEVER intrusive at all, especially on the highway. The car is very well insulated. The note of the aftermarket exhausts tend to get raspier.

'Rocket

agree with rocket too..highway cruising at 70mph in 6th, can almost hear nothing from the exhaust, and thats with my Eisenmann race, which along with the kelleners is one of the loudest available for the beast (Rocket's vid clips helped convince me!!)

FAST 5 · 8th October 2004, 19:55

Okay Boys.......
See my new thread, titled "TAKING "THE DEEEEP PLUNGE"
You'll find it interesting and I'd like your opinions please.

Carrera2RS · 8th October 2004, 22:11

I agree with all that's been said. Regaring fir, the clearances are very marginal so I would steer clear of a one off fab, more trouble than it's worth. The Supersprint is beautifully made !