I'm going to be buying and installing an oil catch can on my R56. I've narrowed it down to BSH vs. M7. Which one do you recommend and why?

I have a stock intake and I'm not any kind of mechanical genious, so cutting hoses and the warning that it's designed for people who have an aftermarket intake on the M7 is a little daunting. On the other hand, the BSH instructions were one very short page with horrible photos and no captions or explanations, so being a relative noob wrencher, I'm a little intimidated there too. I've heard good things about the BSH, though. Just need some input to nudge me one way or the other.

 

We have really liked the BSH catch can, the baffle in the can makes the can collect oil much better, and fitting for the hoses are top notch. I keep them in stock cause we use them on customer cars all the time.

 

I'd go with BSH. The m7 one isn't baffled on the inside, and the connections aren't as good. The BSH has really nice connections that pretty much look stock and the m7 uses some ugly spring clamp things. Although the BSH can doesn't look as good I think it's a way better product for only a little more money.

 

Here is a real good thread here discussing the BSH catch can.

https://www.northamericanmotoring.co...t-install.html

They say that if you add the BSH dual boost port and use the supplied plug, it will force all the oil vapors through the catch can and negate the need for two catch cans.

Dave

 

+1 on the BSH and dual boost tap. The BSH catch cans also now come with a dipstick. Very good quality. Honestly not that hard to install, I didn't get any instructions with mine, but managed to install it by looking at some of the threads in this forum. Good luck.

 

I saw that one, and you're right, it is a very informative thread. Unfortunately I can't use the direct dual boost tap as it alters the PCV system. I autocross and the class I'm in doesn't allow alteration of the PCV.

 

After seeing these responses and talking to a few people myself, it seems like the unanimous decision is the BSH. And ironically enough, using the M7 instructions, I think I can figure out how to do teh BSH install.

 

Funny, I was on your site today looking for a lug-bolt-to-lug-nut conversion and I saw you sell the BSH. I think I'm sold.

 

If you have any install questions or run into any problems let us know .

 

Much appreciated!

 

for the ppl with a DOS intake, where did you guys get the extra hose to fit the BSH can?

 

I have probably emptied about 20+ ounces of JUNK from my BSH can since installing. I cannot recommend a catch can enough. It blows my mind to see the stuff that this thing catch that typically gets circulated into the intake side of the motor (and we all know the problem direct inject poses with this). Order a BSH one asap....they are great.

 

During the cold months check it more often. I get about .25 cup of nasty stuff out of mine every 5-7 days. I would put the dual boost tap on and when you run Autox take it off as it takes 2-3 minutes to remove and install. For the peace of mind, it is well worth it!

 

Has anyone installed a catch can on a 2011 MCS?

 

You can get extra hose from your local auto parts store. (I've even seen it at Lowes and Home Depot sometimes too). They sell it by the foot. I'd measure the inner diameter and bring a sample of the hose with you. You're just looking for fiber reinforced and oil resistant hose for fuel line or coolant applications.

If you'd rather go the mail order route, you can find the hose at McMaster-Carr, Summit Racing, or from Vibrant (I think that Vibrant is up in Canada, actually).

Hope this helps.

-Clint

 

noob question: does installing a catch can void the warranty?

 

I just had warranty work done and they did not say a thing about the OCC or the Dual boost tap installed so I would venture to say no.

 

A catch can will not void your warranty, but warranty service may be denied if they can trace the cause back to the catch can.

This may be a good read.

 

thanks Clint!

 

Damn fine print!

 

I went with BSH for baffling & the dipstick option.

That said, they don't really want to sell the dipstick option because it's a custom build. My order took 4 weeks to ship & the owner said they weren't going to sell R53 cans soon because nobody's buying them.

The stainless steel bracket for the R53 & install picture on their website must be for an early model R53 because it wouldn't work on my 2006 car.

I drilled 2 holes opposite the coolant resevoir in the plastic wall that isolates the ABS system. I then used the 2 provided allen bolts & washers to mount the catch can inside the ABS cavity. It's easy to remove for cleaning & it looks OEM.

 

The R53 isn't direct-injection, though, is it?
If not, it's not subject to the intake valve carbon buildup issues that so many are buying these cans to mitigate.

 

I realize this is an R56 thread & R53's don't have the same direct injection problems but the OCC still keeps blow-by from coating our intercoolers.

I just gave my $.02 because I didn't find out about the dip stick problem 'till after 4 weeks of calling every other day asking what happened to my order.

 

Right, right… I was just saying that the market for catch cans seems to primarily be people worried about valve buildup. Intercooler sludge, while still a concern, doesn't seem to be the primary focus of people looking for cans.

 

Just to add a question, does anybody know how the Alta OCC stacks up?