Will this exhaust fit a ti with aS50B30 engine?

[318ti_Portugal]

M roadster supersprint exhaust.
Will this bolt up with the correct trimming of the rear spoiler?








What do you think? Will it fit? Or is it better to use the M3 Version and mod the center exhaust part (cut it to reduce it's lenght, as the ti is shorter tahn the coupe)?

M3 racing supersprint exhaust:







What is your opinion?

Regards!

[J!m]

I'm using a modified M3 exhaust. The last muffler looks like it will work, but the pipes have to be shortened, as you mentioned.

Notice the upper mufflers have only one pipe in? This won't work as the M3s have 'true duals' all the way back, whereas some of the other six cylinder cars have two into one cat, and one pipe out of the cat to the muffler.

No muffler just 'bolts in and fits', although I have heard rumors that the Supersprint E46 330 mufler can be easily modified to fit. I've not seen one myself to confirm this, but an E46 330 mufler from another manufacturer DID NOT fit easily on a swapped ti, which I DID see first hand...

[sprnova]

I have purchased a brand new e46 330 Supersprint exhaust. I researched it and decided it would fit based on the info I got from a guy who has one on his TI. But after getting mine, it does not built exactly like his. Although the markings on his Supersprint indicated it was for a e46 330, it has the following differences:

1. Right side mounting bracket is different and in a different place.
2. Left side mounting bracket is different (but in same place)
3. The pipes exit the main exhaust body differently.

In comparing my SS e46 330 exahust to the pics of a SS Z3 3.0 roadster exhaust (SS Part # 78786) it looks like the unit this guy has on his 330ti is a much more closer match to the SS Z3 3.0 roadster exhaust.

A guy on bimmerforums has a SS e46 330 exhaust for sale that he said he had on his 332ti. He indicates there were no fitment issues: http://forums.bimmerforums.com/forum...ht=supersprint

I attached a pic of the z3 exhaust and my e46 330 exhaust for comparison.

[J!m]

I think one of the employees at BMP in Texas has a swapped ti with the E46 330 exhaust installed. A change in the mounting design is not beyond the realm of possibility.

Do you think the Z3 exhaust has the best chance at this point???

[sprnova]

Jim,

You are correct about BMP having done that. The guy with the 330ti purchased it from the previous owner who I believe still works at BMP. Even though it has the welded on plate that indicates its a e46 330 exhaust, I think it is closer to the current SS Z3 3.0i exhaust (#787806). I know it could not be the current Z3 3.0i exhaust bec. that car did not exist at the time the 330ti was built.

I have been doing some research and here is what I have found out tonight about the Supersprint exhausts:

1. The following cars use the same single pipe cat back Supersprint muffler (part # 786606):

318ti '95-99
Z3 Roadster 2.5i and 2.8i '99-00
Z3 Coupe 2.8i '98-99

My thought is that if the Z3's above use the same muffler as the 318ti (same mounting points and shape) then the dual pipe exhaust version for the Z3 3.0i(part # 787806) should fit just fine. So, I may just need to get rid of my e46 330 exhaust.

[sprnova]

Here are the pics of the exhaust on the 330ti that I am basing some of my conclusions on:

[J!m]

Sounds reasonable. I can see Supersprint (like any other company) trying to make one product cover a wide range of fitments. The adjustable mount on the right side could be replaced with (worst case) a custom bit, but this would be a ton easier than what I went through to get the M3 exhaust to work...

I'm staying tuned to this thread... I may have a new exhaust soon!

[318ti_Portugal]

I also heard the UUC system for the 330ci fits great with the ti. Just minor adjustments needed.

[sprnova]

Couple more pictures. One shows the stock z3 exhaust next to the Supersprint Z3 exhuast. Shows you where the mounting points are and how the pipe exists the exhaust.

Other pic shows the layout of the e46 330 Supersprint exhaust.

These pics give you a good idea of how the e46 330 Supersprint exhaust is constructed in comparison to the Z3 Supersprint (which is the same as the 318ti Supersprint).

So based on all of that, I am going to get the Z3 3.0i and sell my brand spankin' new e46 330 Supersprint.

[sprnova]

I have been speaking with Chris at BMP. Here is his response to my inquiry about using the e46 330 or Z3 3.0i Supersprint exhaust:

"I have heard of both the e46 330 muffler
787406 and the z3 3.0 muffler 787806 being used for this application. I
built that car that Yates was/is driving. I used a 787806 muffler,
excellent fit."


Also, he built the 330ti that I have referenced in this thread. It has the Z3 (787806) on it.

[Chris@Sprsprnt]

Group,

I have been kindly asked to answer a few questions about using Supersprint exhausts of six cylinder conversions. I have built a few conversion cars and the best muffler I have used thus far is the 787806 intended for use on BMW z3 2.5/3.0. This shares the correct hanger placement and tubing size. It looks great aswell, please see attached file for the last 330ti I used this muffler on. If you have any questions please feel free to ask. Chris

[318ti_Portugal]

What modifications are needed to the center section of the Z3 exhaust to fit it to the ti?

[96 3 1 8 ti]

Chris.. sorry to hijack but what wheels are on that 330ti?

[sprnova]

Originally Posted by Chris@Sprsprnt

Group,

I have been kindly asked to answer a few questions about using Supersprint exhausts of six cylinder conversions. I have built a few conversion cars and the best muffler I have used thus far is the 787806 intended for use on BMW z3 2.5/3.0. This shares the correct hanger placement and tubing size. It looks great aswell, please see attached file for the last 330ti I used this muffler on. If you have any questions please feel free to ask. Chris

Thanks for chiming in Chris and taking the time to answer all my questions today.

So guys, if you want to get a Supersprint, the Z3 muffler (787806) is the way to go. It has 80mm dual tips too which are pretty cool.

It turns out that the exhaust on Chris's old car has a stamp on it that says "e46 330" but its not from an e46. The e46 330 exhaust will still fit, it just does not have the mounting brackets in the exact same places.

[sprnova]

Originally Posted by 96 3 1 8 ti

Chris.. sorry to hijack but what wheels are on that 330ti?

AC Schnitzer Type II's. Look like 17".