[boom]

BIMMERPOST / Classifieds

Asking Price:

None

Item Interest

All,
I am getting out of my car and will be parting it out. The first to go is my beautiful fully custom 3" stainless steel exhaust made by Benchmade Proper. www.benchmadeproper.com I bought this from another member and now it's time to pass it on. It's truly one of a kind. I had side branch resonators added by BMP to eliminate the drone that is common for aftermarket exhausts. This is one of the deepest sounding exhausts that I've ever heard and there is very minimal drone. I never got around to doing downpipes but am positive that this would have been the best setup for catless downpipes and minimal cabin noise - especially for automatics. The system has two vibrant cylindrical resonators, two vibrant oval resonators, and two capped vibrant resonator for the side branches. It is absolutely the finest quality. The welding is pure artistry.

The exhaust was built for Jeramie's 335xi coupe and fits mine perfectly. It will work without modification for any e92 335i. Making it work for an e90 would not be that difficult as there is room to shorten the exhaust after the rear resonators.

The exhaust is quad tip and was designed for the Mtech bumper with quad diffuser. I just had my stock bumper cut by Benchmade. They did an incredible job and I never had any regrets about cutting my stock bumper. When my stock bumper goes back on, it will have quad tips welded up. You'll need to have a bumper than can accommodate this setup or be willing to modify your existing bumper.

I'm having the exhaust removed next Saturday at Benchmade so they can fab the tips on my stocker. It will be available after that. You might even be able to schedule installation with them after my job is done.

The asking price for the exhaust is $1200. This is half of the original cost. It's pricey but it's perfect and will be THE BEST setup for minimizing drone with downpipes. Shipping this bad boy will not be cheap. I can pack it efficiently but it's big and heavy. I'll ship it anywhere at buyer's expense. I'd speculate it would be more than $100 depending on the location.














These are the side branch resonators. There are lots of names for this technology but essentially it works by destructive interference of the resonant sound wavelength by adding 1/4 of that wavelength. The sound waves go in, bounce back off of the closed end and cancel out the sound at the joint. The results are phenomenal.








Bumper work.



These are movies with sound demonstrating the exhaust.





This is before and after virtual dyno of the exhaust. It was done on the exact same stretch of road and temps were comparable. The top end improvement was definitely noticeable even on stage 1 Cobb. Higher boost levels would make higher gains because of the flow improvement.

[werke-t]

daaaang... thats pretty crazy exhaust you have there! nice welds....

GLWS

[EDM92]

That's a sick exhaust! I doubt you got a 35 hp and 35 tq increase from it though. With down pipes, MAYBE, but you stated you don't have down pipes.

[boom]

Originally Posted by BMWorNOTHING

That's a sick exhaust! I doubt you got a 35 hp and 35 tq increase from it though. With down pipes, MAYBE, but you stated you don't have down pipes.

I'd agree that 35 is high but it was noticeably faster. I'm just posting data from the virtual dyno. At 3" all the way back, this has to be one of the best exhausts for eliminating flow restriction. The car went 12.59 @110 with fmic, mr5 intake, and this exhaust on Cobb stg 1.

[triggz]

what is that they used to put around the exhaust outlets on the bumper? it looks like a rubber insert?

[boom]

Originally Posted by triggz

what is that they used to put around the exhaust outlets on the bumper? it looks like a rubber insert?

It's some sort of trim material with adhesive in the channel. Hasn't moved since install.

[Yodaime]

This exhaust is gangstah! I have a buddy with the same setup but dual single tips. BUMP! GLWS!

[ttbmer]

Care to share a bit more abt bumper work. It looks good, a pm would be great. I want quats but I have OEM bumper

[boom]

Originally Posted by ttbmer

Care to share a bit more abt bumper work. It looks good, a pm would be great. I want quats but I have OEM bumper

You Have a pm.

[boom]

Ttt

[JDLM]

mother of god

[nitehawk]

Beautiful Reason for sale?

[boom]

I'm parting out prior to sale. Need something with more doors and better mileage.

Buy this. You will not regret.

[boom]

Ttt

[RupertPupkin]

That is some seriously good craftsmanship! Great looking exhaust!

[boom]

Exhaust is off the car and waiting to go to its next home. Make an offer.

This is the only full 3" exhaust for a 335 that I've ever seen and with its design, there is barely any drone. Couple it with downpipes and you're sure to have the best flowing turbo back system available.

[boom]

ttt

[cssnms]

Awesome piece of artwork there, to bad you have to sell. This exhaust is nothing short of fantastic and truely a one-of-a-kind custom system. I can speak to the quality of this exhaust and workmanship since I have a Benchmade exhaust on my car, thanks in large part to Boom's review. The pictures don't do this system justice.

[boom]

Ttt

[boom]

Ttt

[Tuner1984]

Bump for a great seller. Hate to see you sell your car!! Somebody buy this amazing car!

[boom]

C'mon guys. Make me an offer on this incredible exhaust.