Supersprint X-pipe installed

**xopher** · 09-01-2008

Following other members' advice, I installed a Supersprint X-pipe recently. While I was at it, I also had the shop replace the secondary cats with straight pipes. Based on other's descriptions, I believe removing the secondary cats made a bigger difference in the overall sound level than the X-pipe. This is much louder than stock. Maybe too loud. If I'm gentle with the throttle, it's not much louder. It's definitely deeper and more authoritative sounding though. At higher revs at WOT, it makes a lot of noise. I can hear the echoes off anything nearby.

I'm not sure about difference in power. It feels more lively and the ESP seems to come on more often. But maybe it's the sound difference I'm responding to. I also lost 9.5 lbs overall as well.

I only had my cell phone for pictures with me. Sorry for the poor quality photo.

**alroumi** · 09-02-2008

Congratulations on the new modifications, your going to love it more in winter when the car takes a while to warm up and it sounds like an F430 on start up but with a deeper and muscular tone.

mr.flyer · 09-04-2008

are the supersprints the best aftermarket X-pipes or are there any other good options? what is available? appreciate the help guys

**alroumi** · 09-04-2008

Quote:

Originally Posted by mr.flyer

are the supersprints the best aftermarket X-pipes or are there any other good options? what is available? appreciate the help guys

I cannot vouch on the rest but I am more than happy with mine, the quality is top notch as like other things that come from Italy its guaranteed to be the best fit and finish.

**Nevada Joe** · 09-04-2008

Quote:

Originally Posted by mr.flyer

are the supersprints the best aftermarket X-pipes or are there any other good options? what is available? appreciate the help guys

There is a magnaflow x-pipe. http://www.slkworld.com/performance-...installed.html

I picked one up but have not installed it. It was $80. I think Eisenmann makes one, but it is $480. This one is probably the best.

**xopher** · 09-10-2008

I paid $580 for my Supersprint. The material quality is very good, equivalent to the stock exhaust. The Supersprint is made of 304 stainless steel. The fit is very good, but you must cut the stock exhaust at one end. It's not work for an ameteur. I went through 3 Saws-All blades making the cuts. A professional welder finished the job.

cyberdrakon · 09-10-2008

Quote:

Originally Posted by alroumi

I cannot vouch on the rest but I am more than happy with mine, the quality is top notch as like other things that come from Italy its guaranteed to be the best fit and finish.

Uh...Italy is known for luxury goods, but not known for the 'best fit and finish'. Anyone in wholesale, manufacturing, or distribution could tell you that. Many of their massed produced goods can barely match the quality that comes out of China these days.

No doubt supersprint can come up with good products for their price, but Italy as a whole doesn't have that reputation.

**Nevada Joe** · 09-10-2008

Xopher

How is the sound with the removal of the secondary cats? A little louder / a lot louder?

J

**Cruzer 8** · 09-11-2008

Thanks Guys I just learned something I didn't know that the SLK55 had 2 sets of CATS --- my SL has only the one set mounted right after the exhaust manifold --- will you have any problem with passing smog inspections with them gone?

**alroumi** · 09-11-2008

Quote:

Originally Posted by Cruzer 8

Thanks Guys I just learned something I didn't know that the SLK55 had 2 sets of CATS --- my SL has only the one set mounted right after the exhaust manifold --- will you have any problem with passing smog inspections with them gone?

You can get a nice muffler from one of the tuners which could come with sport catalytics, so there for you wont have an smog emission problems.

**xopher** · 09-12-2008

Removal of the secondary cats made it much louder. You have to be gentle with the throttle when you don't want to make much noise. You (and your passenger) can really tell when you make minute throttle adjustments, even at low revs. But it's most noticeable above about 4k rpm. (Is that where the shorter intake runners kick in?) It gets people's attention. Everyone on the golf course I drove by the other day stopped and watched as I went by wide open. And it makes much more burbling noises when letting off the throttle. A little at low rpm and quite a bit at high rpms. I'm glad I removed them.
This sound assessment is with the top down. With the top up, it only seems to be a deeper tone at low revs but still appreciably louder at high revs.

09-02-2008	#2 (permalink)
alroumi Moderator Join Date: Jun 2006 Location: Kuwait City, Kuwait Vehicle: 2006 Kleemann Designo Mocha Black SLK55 AMG Other Toys: 2007 Ebony Jaguar XKR Coupe' and 06 Black Cayenne S Posts: 6,271 Country: Thanks: 288 Thanked 231 Times in 145 Posts	Congratulations on the new modifications, your going to love it more in winter when the car takes a while to warm up and it sounds like an F430 on start up but with a deeper and muscular tone. __________________ 06 Kleemann Designo Mocha Black SLK55 AMG 06 Porsche Cayenne S 07 Jaguar XKR Coupe' I use the Torque and keep the HP for my Steak Sauce!

09-11-2008	#9 (permalink)
Cruzer 8 Elite SLK World Member Join Date: Jan 2007 Location: Peoria, AZ Vehicle: 07 SL 550 Mars Red Posts: 572 Country: Thanks: 31 Thanked 57 Times in 27 Posts	Thanks Guys I just learned something I didn't know that the SLK55 had 2 sets of CATS --- my SL has only the one set mounted right after the exhaust manifold --- will you have any problem with passing smog inspections with them gone? __________________ GENE ---- See My Pic's To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. *To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.* SL 550 Mars Red

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09-04-2008	#3 (permalink)
mr.flyer SLK World Member Join Date: Aug 2008 Location: Kuwait Vehicle: E55 - 99' Other Toys: S65 - 05' Posts: 26 Country: Thanks: 1 Thanked 1 Time in 1 Post	are the supersprints the best aftermarket X-pipes or are there any other good options? what is available? appreciate the help guys

09-10-2008	#6 (permalink)
xopher SLK World Member Join Date: Dec 2007 Location: Whidbey Island, WA Vehicle: '06 SLK 55 with 030 package Posts: 10 Country: Thanks: 4 Thanked 3 Times in 2 Posts	I paid $580 for my Supersprint. The material quality is very good, equivalent to the stock exhaust. The Supersprint is made of 304 stainless steel. The fit is very good, but you must cut the stock exhaust at one end. It's not work for an ameteur. I went through 3 Saws-All blades making the cuts. A professional welder finished the job.

09-10-2008	#8 (permalink)
Nevada Joe Cr. G. H. Join Date: Jul 2008 Vehicle: '08 SLK 55 AMG Other Toys: '06 Solstice (autox) F150 4x4 (for the winters), '85 VW GTI (the rally car) Posts: 109 Country: Thanks: 27 Thanked 20 Times in 12 Posts	Xopher How is the sound with the removal of the secondary cats? A little louder / a lot louder? J

09-12-2008	#11 (permalink)
xopher SLK World Member Join Date: Dec 2007 Location: Whidbey Island, WA Vehicle: '06 SLK 55 with 030 package Posts: 10 Country: Thanks: 4 Thanked 3 Times in 2 Posts	Removal of the secondary cats made it much louder. You have to be gentle with the throttle when you don't want to make much noise. You (and your passenger) can really tell when you make minute throttle adjustments, even at low revs. But it's most noticeable above about 4k rpm. (Is that where the shorter intake runners kick in?) It gets people's attention. Everyone on the golf course I drove by the other day stopped and watched as I went by wide open. And it makes much more burbling noises when letting off the throttle. A little at low rpm and quite a bit at high rpms. I'm glad I removed them. This sound assessment is with the top down. With the top up, it only seems to be a deeper tone at low revs but still appreciably louder at high revs.

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