Decatted my stock frontpipe - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Contender · 12-23-2019, 11:23 PM

I am running a muffler delete as well no raspy sound just deeper exhaust tone. Plus it just seems to run smoother maybe a placebo effect but, either way it has got to be a more free flowing exhaust.

86MLR · 12-24-2019, 01:10 AM

Quote:

Originally Posted by Contender

I am running a muffler delete as well no raspy sound just deeper exhaust tone. Plus it just seems to run smoother maybe a placebo effect but, either way it has got to be a more free flowing exhaust.

I made around 200hp with a full decat on the OEM exhaust.

If your staying NA the cats are the only real restriction.

86MLR · 12-24-2019, 01:59 AM

Quote:

Originally Posted by Contender

I am running a muffler delete as well no raspy sound just deeper exhaust tone. Plus it just seems to run smoother maybe a placebo effect but, either way it has got to be a more free flowing exhaust.

I made around 200hp with a full decat on the OEM exhaust.

If your staying NA the cats are the only real restriction.

humfrz · 12-24-2019, 02:20 AM

We heard you the first time -

humfrz

Grady · 12-24-2019, 07:52 AM

You know old people, you start hearing the same story over and over, only the fish gets bigger and bigger. Next time he post it it will be 250hp.

Breadman · 12-24-2019, 08:48 AM

Quote:

Originally Posted by Grady

You know old people, you start hearing the same story over and over, only the fish gets bigger and bigger. Next time he post it it will be 250hp.

i think it was a joke because the car is 200hp stock

JD001 · 12-24-2019, 09:24 AM

Quote:

Originally Posted by humfrz

We heard you the first time -

humfrz

Decatted pipe makes some noise you know.. so possible hearing DAMAGE! Did you GET THAT!!

toast · 12-24-2019, 10:22 AM

Quote:

Originally Posted by Breadman

i think it was a joke because the car is 200hp stock

You are quoting manufacturer crankshaft numbers and he is talking about dyno measurement at the wheels. Not a joke.

Contender · 12-24-2019, 10:22 AM

Lol..that's funny but yes I do plan on getting out the header cat soon and getting a tune. Funny I thought the muffler delete would have been annoying at cold start it is but after that I don't think so. I have had people complementing me on how good the car sounds. I has some drone but took care of that with some insulated air duct wrap in the trunk and under the rear seat area. Worked out good and the wife was happy with the cabin drone reduction.

StraightOuttaCanadaEh · 12-24-2019, 10:28 AM

How does one decat something? Is this something a mechanic can do or do I have to go to a dedicated exhaust shop?

Grady · 12-24-2019, 11:04 AM

Quote:

Originally Posted by Contender

Lol..that's funny but yes I do plan on getting out the header cat soon and getting a tune. Funny I thought the muffler delete would have been annoying at cold start it is but after that I don't think so. I have had people complementing me on how good the car sounds. I has some drone but took care of that with some insulated air duct wrap in the trunk and under the rear seat area. Worked out good and the wife was happy with the cabin drone reduction.

The cats muffle the sound a lot. Cats and no muffler sounds good, no cats and muffler sounds good. No cats and no mufflers will piss of the Neibor hood.

RToyo86 · 12-24-2019, 11:08 AM

Quote:

Originally Posted by StraightOuttaCanadaEh

How does one decat something? Is this something a mechanic can do or do I have to go to a dedicated exhaust shop?

A chisel/long pointy thing and a hammer.
Smashy smashy and voila, decatted pipe/header.

Stomachbuzz · 12-24-2019, 11:29 AM

Quote:

Originally Posted by RToyo86

A chisel/long pointy thing and a hammer.
Smashy smashy and voila, decatted pipe/header.

you mean just stabbing out the honeycomb structure from the inside?

I thought you would have had to cut the cat off and then weld on new pipe in its place

DarkPira7e · 12-24-2019, 12:07 PM

Quote:

Originally Posted by Stomachbuzz

you mean just stabbing out the honeycomb structure from the inside?

I thought you would have had to cut the cat off and then weld on new pipe in its place

That's the way for someone who wants to spend on material and have it done right. Screwdriver, hammer, and a mask is basically free!
Also, if your local laws enforce emissions and visually check for the cat, you'll pass

12-23-2019, 11:23 PM	#1
Contender Senior Member Join Date: Nov 2018 Drives: 2017 Toyota 86 Location: Washougal Posts: 130 Thanks: 6 Thanked 51 Times in 29 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Decatted my stock frontpipe I am running a muffler delete as well no raspy sound just deeper exhaust tone. Plus it just seems to run smoother maybe a placebo effect but, either way it has got to be a more free flowing exhaust.

12-24-2019, 10:28 AM	#10
StraightOuttaCanadaEh Wes Join Date: Feb 2017 Drives: Artisan Spirits '17 86 Location: Toronto Posts: 2,794 Thanks: 1,165 Thanked 1,674 Times in 994 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	How does one decat something? Is this something a mechanic can do or do I have to go to a dedicated exhaust shop? __________________ Instagram: @gt86ws

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12-24-2019, 02:20 AM	#4
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 29,868 Thanks: 28,790 Thanked 31,816 Times in 16,425 Posts Mentioned: 708 Post(s) Tagged: 2 Thread(s)	We heard you the first time - humfrz

12-24-2019, 10:22 AM	#9
Contender Senior Member Join Date: Nov 2018 Drives: 2017 Toyota 86 Location: Washougal Posts: 130 Thanks: 6 Thanked 51 Times in 29 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Lol..that's funny but yes I do plan on getting out the header cat soon and getting a tune. Funny I thought the muffler delete would have been annoying at cold start it is but after that I don't think so. I have had people complementing me on how good the car sounds. I has some drone but took care of that with some insulated air duct wrap in the trunk and under the rear seat area. Worked out good and the wife was happy with the cabin drone reduction.

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