My exhaust set up. - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

eachey51 · 10-15-2014, 02:01 PM

I need a cat and no cel to pass inspection so im going with a catted uel header from ft86speedfactory. Then i can put on a cat delete front pipe and overpipe! Out back i am going with the invidia n1. I hope its loud! The car is not my daily so i want it loud. Any suggested changes tho regarding my header or cat back?

gramicci101 · 10-15-2014, 02:13 PM

What's your location? If you're in the US and you have a visual inspection as well, it's illegal to remove OEM cats at all. If it's just a tailpipe sniff test, a single cat can pass that. If it's an OBD2 test, a tune will pass that by disabling that CEL.

If you don't want to get a tune, get a catted header. FT-86SF, P&L, and JDL all make them. You'll be losing out on available power without a tune though. Personally, I would do an uncatted header and a high flow cat in the front pipe, then flash a stage 2 tune. An uncatted header with the Invidia N1 will be loud.

phrosty · 10-15-2014, 02:55 PM

Quote:

Originally Posted by gramicci101

If it's an OBD2 test, a tune will pass that by disabling that CEL.

It's my understanding that emissions testing looks at OBD2 readiness checks, not CELs, and a tune can not defeat this.

eachey51 · 10-15-2014, 02:56 PM

Yea im from PA so i have a visual test as well as i plug in test. I was told that a single cat on my car should be passed. A tune is a must to get good NA power so i will do that in the near future. So a catless header and a high flow catted front pipe is my best bet?

2superblus · 10-15-2014, 02:59 PM

Quote:

Originally Posted by phrosty

It's my understanding that emissions testing looks at OBD2 readiness checks, not CELs, and a tune can not defeat this.

With a Tune you can turn off specific Cel codes forever.

eachey51 · 10-15-2014, 02:59 PM

Wait, phrosty your telling me i should run a catted header?

eachey51 · 10-15-2014, 02:59 PM

Quote:

Originally Posted by 2superblus

With a Tune you can turn off specific Cel codes forever.

That good news

eachey51 · 10-15-2014, 03:11 PM

Also, what header has the most boxerish uel sound? If that makes any sense. Lol

cdrazic93 · 10-15-2014, 03:34 PM

Quote:

Originally Posted by eachey51

Also, what header has the most boxerish uel sound? If that makes any sense. Lol

Its all the same

phrosty · 10-15-2014, 06:16 PM

Quote:

Originally Posted by 2superblus

With a Tune you can turn off specific Cel codes forever.

My point is that CEL code and readiness test are two separate things. You can turn off a CEL, you can't turn off readiness tests. OBD2 emissions testing checks readiness, not just CEL. A tune will not help you pass emissions.

STV3 · 10-15-2014, 06:21 PM

Quote:

Originally Posted by eachey51

Also, what header has the most boxerish uel sound? If that makes any sense. Lol

I believe the Borla header has one of the more aggressive rumble sounds to it. The FT86Speedfactory catted UEL header (which I have) actually has a nice boxer rumble down low in the RPMs and smooths out at higher RPMS and has a more EL header sound to it.

eachey51 · 10-15-2014, 07:55 PM

Does anyone have experience with the cel fix with the borla uel header ?

B-R-Z · 10-15-2014, 08:07 PM

There's no fix for a specific header. If you have a catless header, or even remove the cat from your stock header, a tune can disable the code (P0420).

I have a catless Tsudo UEL header and I had the CEL from it. I flashed a OFT tune and no more CEL.

@phrosty I don't think a tune does anything to affect OBD2 readiness, it just disables whichever codes you tell it to.

eachey51 · 10-15-2014, 09:12 PM

More of a "fix". Its not guaranteed to work but its worth a try i think. I was hoping someone else would have some experience with it. Then i should pass inspection with just a high flow catted front pipe

10-15-2014, 02:01 PM	#1
eachey51 Member Join Date: Oct 2014 Drives: Posts: 11 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	My exhaust set up. I need a cat and no cel to pass inspection so im going with a catted uel header from ft86speedfactory. Then i can put on a cat delete front pipe and overpipe! Out back i am going with the invidia n1. I hope its loud! The car is not my daily so i want it loud. Any suggested changes tho regarding my header or cat back?

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10-15-2014, 02:13 PM	#2
gramicci101 Off Topic Join Date: Feb 2014 Drives: 2014 Subaru BRZ Limited Location: Vegas, baby! Posts: 4,610 Thanks: 2,369 Thanked 4,243 Times in 2,170 Posts Mentioned: 43 Post(s) Tagged: 3 Thread(s)	What's your location? If you're in the US and you have a visual inspection as well, it's illegal to remove OEM cats at all. If it's just a tailpipe sniff test, a single cat can pass that. If it's an OBD2 test, a tune will pass that by disabling that CEL. If you don't want to get a tune, get a catted header. FT-86SF, P&L, and JDL all make them. You'll be losing out on available power without a tune though. Personally, I would do an uncatted header and a high flow cat in the front pipe, then flash a stage 2 tune. An uncatted header with the Invidia N1 will be loud.

10-15-2014, 02:56 PM	#4
eachey51 Member Join Date: Oct 2014 Drives: Posts: 11 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yea im from PA so i have a visual test as well as i plug in test. I was told that a single cat on my car should be passed. A tune is a must to get good NA power so i will do that in the near future. So a catless header and a high flow catted front pipe is my best bet?

10-15-2014, 02:59 PM	#6
eachey51 Member Join Date: Oct 2014 Drives: Posts: 11 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Wait, phrosty your telling me i should run a catted header?

10-15-2014, 03:11 PM	#8
eachey51 Member Join Date: Oct 2014 Drives: Posts: 11 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Also, what header has the most boxerish uel sound? If that makes any sense. Lol

10-15-2014, 07:55 PM	#12
eachey51 Member Join Date: Oct 2014 Drives: Posts: 11 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Does anyone have experience with the cel fix with the borla uel header ?

10-15-2014, 09:12 PM	#14
eachey51 Member Join Date: Oct 2014 Drives: Posts: 11 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	More of a "fix". Its not guaranteed to work but its worth a try i think. I was hoping someone else would have some experience with it. Then i should pass inspection with just a high flow catted front pipe

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