Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - Anyone running 3" exhaust & catless header?

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- - Anyone running 3" exhaust & catless header? (https://www.ft86club.com/forums/showthread.php?t=42685)

I'll be running the JDL UEL catless header with a full 3" Nameless Headerback (Downpipe, Midpipe, Axleback) fairly soon. I'll post it up when its on and tuned.

Quote:

Originally Posted by CAMBAM_6 (Post 1098906)

well sir 1.) show me proof and 2.) why arent all the top companies making there exhaust systems that wide then if its supposedly better???

1. I have a 1.8 liter making more power with a 3 inch. I've seen several smaller high compression engine make more power with a 3 inch. This engine makes more power with a 3 inch. 2. Cost and loud.

Quote:

Originally Posted by wrxgoose (Post 1098971)

I have a 3" header back exhaust and catless UEL header. I seemed to have more power than others were making (after tune) with the 2.5.

and that's exactly the setup I had, OP, that with an Injen intake, was making 200whp NA.

Awesome! Still running the set up? What kind of sound levels are you getting? Any vids?

Quote:

Originally Posted by FR-S Matt (Post 1099088)

I'll be running the JDL UEL catless header with a full 3" Nameless Headerback (Downpipe, Midpipe, Axleback) fairly soon. I'll post it up when its on and tuned.

Definitely let us know what you think after everythings on!

Quote:

Originally Posted by TouchMyHonda (Post 1099133)

1. I have a 1.8 liter making more power with a 3 inch. I've seen several smaller high compression engine make more power with a 3 inch. This engine makes more power with a 3 inch. 2. Cost and loud.

So how loud are we talking? Although it is a race car, I still drive it on the street. Also, some venues have a strict 94dB limit.

Quote:

Originally Posted by RiskyTrousers (Post 1099536)

Awesome! Still running the set up? What kind of sound levels are you getting? Any vids?.

my build thread has some vids, and you should be able to hear. yes, still have that set up, minus the intake because it won't fit with the SC.

3 inch is too big for na and u would not make more power from it ur 4 cyl wont make enough to fill the 2.5 exhaust let alone 3 perrin problly made that exhaust for guys who are going forced induction or have it already most supercharged car that are v6 don't even have that big of exhaust my c32 amg that I owned previous had 2.5 inch and that was v6 3.2L supercharged

Go 3"

Our motors are factory 12:5:1 compression. With this compression, it will yield more power. Another plus about it is, when and if you go FI you dont have to pay to redo your exhaust.