QUESTION: I have yet to find a definitive answer to this... I am buying a used RV6 catted downpipe, without the hardware. Do I have to order the particular RV6 hardware from their site (12-15 Civic SI Bellmouth Downpipe Hardware Kit), or can I buy new OEM gaskets? I've heard that the OEM...

Hey Everyone, I will soon have available all of the items mentioned in the title of the post: Progress Adjustable Sway Bar, Hondata Flashpro w/ Bluetooth, RV6 Catted Downpipe, PRL RBC Adapter Kit and a Skunk2 Cold Air Intake. The parts are coming off of a car that has 43,000 miles on it...

Hey there you guys I have a 2012 Si Coupe and the guy before me had put on a 3” PLM catless downpipe and a Full Race cat back also a 3”. The downpipe now has a mean crack in it, is throwing a lean fuel mixture/O2 Sensor cel, and needs to be replaced. I’ve been dealing with the smell (amplified...

Anyone selling a full race catless downpipe for civic si? I been waiting on this backorder and its been two months its getting ridiculous. Im still open headers and i cant wait any longer.

As my name explains, I am new at this. I have a couple of months with a 2012 si sedan and looking to make it sound better and get some more performance out of it as well. I wasn’t sure where to begin though... should I get a downpipe first? Or the exhaust first? Should I get them at the same...

Hi guys! First post here I recently bought a plm catless dp without any gaskets or other parts. The seller told me I just need to order a 3 inch gasket. Is there anything else I need for the install? Such as bolts, washers, nuts etc OR can I just reuse the stock ones. And what are the...

I'm in the Minneapolis region, but willing to pay shipping. Open to other downpipes as well, but would prefer the RV6 catted one. EDIT: Found one on local craigslist of all places...

So I’ve seen there is the tuning section but I haven’t seen an answer for this question I have, assuming because this is really basic and I just don’t know it. So I have a Invidia N1 cat back + CAI. after I get my coils, I want to get a downpipe to get louder, backfire as well as a little more...

Working on getting a custom exhaust rolling for my 2015 Honda Civic coupe r18. I like the borla spitfire exhaust. I'm getting that and a Megan racing down pipe probably, don't know much about resonators.. k don't want droning to occur, looking for a nice deep tone. Any recommendations?

Hi everybody! History: I have an AEM CAI and the person before me deleted the secondary cat and welded (very poorly) a 3" home-made exhaust to it. I tuned with Steve at E-Tunez with my FlashPro and was very satisfied with the result. I recently ordered and installed my Fullrace Catless...

So this is a sad boi post at sad boi hours.... About two Hours ago my Hasport 70 a Rear motor mount (RMM) cracked. Not only that, I think that due to the cracking of the RMM my Axle popped out the tranny and my RV6 down-pipe bolts became undone along with my belt breaking..... Now the car is...

Eh! Anyone here buy/install a downpipe on their 9th gen si? If so what brand and type (Catted or Catless) did you get and do you know if you will pass emissions? Also if you have the RV6, how did you obtain it? Did you order it through the RV6 U.S. site, or is their Canadian retailer that I...

From forum suggestion, I installed my downpipe with a 70a Rear motor mount & 70a upper torque mount and it still cracked. i was on my usual route to work when all of a sudden the car came obnoxiously loud , and I immediately assumed it was the downpipe , I parked and checked and sure enough it was.

Hey everyone, I recently bought a used Buddy Club downpipe. Upon installation, I saw the flange for the downpipe simply does not line up with the OEM Catback. When two bolt holes are aligned, the other doesn't. Has anyone else had this problem? Anyone have suggestions? I have gotten it to work...

I'm planning on throwinng a CT Supercharger in my '14 SI Sedan. I'm hoping to find a downpipe with the cat to make things a little easier come E-Test time. Anybody know of any High Flow Down Pipes with a cat? Would be a great help. Thanks.

I am about to install an aftermarket downpipe and noticed the top o2 sensor has a shroud around it which makes using a thin walled o2 socket necessary. Is there a certain one you used that worked for this application? Thank you

Hey guys, Im new here. I have been perusing many different threads on this forum for a good while now. Lots of great information. I am starting to gather parts for a supercharger setup and will be using the Kraftwerks kit that is available for my 2012 Si. I have an Injen axleback exhaust and...