Borla Unequal Length Header Review and DIY

[s2d4]

Originally Posted by akahenry

Just out of curiosity, is it recommended to install a brand new header (UEL in this case) along with an overpipe at the same time? If not, would it be fine to simply install an aftermarket catless header while keeping the stock overpipe? I know for a fact an aftermarket overpipe isn't going to give any significant or noticeable horse power improvement over the stock overpipe, but is it worth it to upgrade to an aftermarket overpipe (performance wise)? Is it worth it to spend a couple hundred bucks on an overpipe for slightly better flow- is my real question. (I feel like this second question is redundant and voids my aforementioned question lol) Comments, suggestions, and opinions are greatly appreciated!

Are you going with E85 or FI later?

[akahenry]

Originally Posted by s2d4

Are you going with E85 or FI later?

I'm just going to stay N/A and play with E85 once I receive my OFT later on in the Fall. For me, I just want to have that deep boxer rumble, while not having an outrageously loud exhaust set up (my cat back as of right now, is quite loud with everything else being stock in the exhaust department). I know that by replacing the overpipe will give me slightly better flow (probably not even butt noticeable), my worry is whether it'll add too much noise and perhaps "drone" to my future exhaust set up: UEL Headers, stock overpipe, stock front pipe, unresonated cat back.

[s2d4]

Originally Posted by akahenry

I'm just going to stay N/A and play with E85 once I receive my OFT later on in the Fall. For me, I just want to have that deep boxer rumble, while not having an outrageously loud exhaust set up (my cat back as of right now, is quite loud with everything else being stock in the exhaust department). I know that by replacing the overpipe will give me slightly better flow (probably not even butt noticeable), my worry is whether it'll add too much noise and perhaps "drone" to my future exhaust set up: UEL Headers, stock overpipe, stock front pipe, unresonated cat back.

Chuck the stock cbe back on, problem solved.

[Fizz]

I'll attempt this installation myself when the header arrives. What size is the sensor socket?

Also, does anyone use gasket sealant/maker together with oem gaskets? Or is it not necessary if using brand new oem gaskets? I've got a tube of hi-temp ultra copper gasket sealant and wanted to know if I could coat the gaskets with these?

[Cop]

Originally Posted by Fizz

I'll attempt this installation myself when the header arrives. What size is the sensor socket?

Also, does anyone use gasket sealant/maker together with oem gaskets? Or is it not necessary if using brand new oem gaskets? I've got a tube of hi-temp ultra copper gasket sealant and wanted to know if I could coat the gaskets with these?

The o2 sensor is a 7/8th. I used this socket in my install:

http://www.harborfreight.com/3-8-eig...nch-97177.html

[Fizz]

One more question.....is the OEM manifold-to-engine flange bolt an M8 or M10?

[deletedbilly]

thank you for an amazing write up. lots of details and most definitely written by a true tuner and builder. if you happen to have a 2015 model lying around and would like to do another write up for our exhaust and diffuser, let me know - would love to work something out with your club email me at billyb@borla.com thanks guys!!!

[Mchilese]

Originally Posted by F1point4

Finally. Thank you all for being patient


20130323-BorlaUELHeaderDIY-001 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-002 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-003 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-004 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-005 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-006 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-007 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-008 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-009 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-010 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-011 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-012 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-013 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-014 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-015 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-016 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-017 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-018 by VictorN07, on Flickr


I goofed and forgot the supplied 2 black bolts and nuts. Instead I used some grade 5 nuts and bolts supplied by Phastek. Thanks Chris@Phastek!

20130323-BorlaUELHeaderDIY-019 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-020 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-021 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-022 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-023 by VictorN07, on Flickr


20130323-BorlaUELHeaderDIY-024 by VictorN07, on Flickr

Thanks for putting this up. I got a JDL header, and man, this write up just made it smooth sailing. Many, many thanks!

Sent from my Moto G (4) using Tapatalk

[jkamelo]

Is the header-to-overpipe gasket the same as the front pipe-to-catback gasket? Should I replace the front pipe-to-catback gasket at the same time?