So i've decided to go catless with my downpipe. I currently have the stock DP and a Magnaflow catback exhaust (that sounds fantastic) on my r55 2011 Clubman.

I love the sound of my magnaflow exhaust, I just want it to be louder.

Will brand of catless downpipe matter if I want to maintain the same sound note, but increase loudness? Any advice will greatly be appreciated!

 

When I put my downpipe on, it got louder but my pop-and-burble became more of a whipcrack. I very much enjoyed that while I waited for the rest of my exhaust to ship. Combined with the rest of the exhaust, I don't think the brand is going to make much difference. There's probably some difference, but I doubt it's noticeable.

 

What did y'all do to avoid the CEL? Just a tune?

Thanks,

Sean

 

i have a Milltek catless DP and evolve-R tune to avoid the CEL

 

Just following up here. I bought the CNT catless downpipe on a cyber monday sale for $150 new. The install took about 4.5 hours with me and my buddy (longer than expected). Those heat shields are a nightmare to get off and you need extenders for your ratchets to get to many of the bolts. The clamp that holds the exhaust and downpipe together also was very difficult to get off and on.

All that said... It sounds amazing and I DEFINITELY feel a HP increase through the mids and highs! Next step is to ditch the JB+ and get a real tune.

Smokey -- I put an o2 spacer on and haven't seen a CEL yet.

 

yeah those heat shields are a pain. If you're tempted to leave any of them off, don't. I did and the stupid thing rattles now. It's going back on when I get my latest ECS order.
For the exhaust clamp, I used a pair of punches matching the diameter of the fastener and kind of pried it open. Doesn't help with that little gasket in there, not sure how to keep that from shifting out of place. Maybe a small piece of tape?

So, glad you like the sound. I know I miss it! any more exhaust mods planned? downpipe-back maybe?

 

No more exhaust mods planned for now. Next step is a custom tune! Here's a before and after video of the downpipe swap. Let me know what you think.

 

Which spacer did you use?

 

This spacer comes with 2 parts. I just used the straight one. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

 

Thanks!

 

Are you still running the JB+ with the O2 spacer? How is your CEL situation? Still off?