Front pipe installed = WTF - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Tansey86 · 09-22-2013, 09:28 AM

Bacardi and coke. Do it. Do it.

Grip Ronin · 09-22-2013, 10:31 AM

i did a front pipe a while ago, didn't feel any difference.

stugray · 09-22-2013, 11:06 AM

I would assume that swapping from the catted stock front pipe to a non-cat front pipe means that you would fail future emissions tests?

Or is the engine clean enough that you would still pass?

brichard0625 · 09-22-2013, 11:24 AM

im running stock exhaust with just front pipe(no cat) and theres def a difference. there is a little rasp and i passed emissions on my car without the cat. I believe this car has two cats and if you delete one theres no issues. the cat in the header i believe will cause issues because thats where the two o2 sensors are at.

Fizz · 09-22-2013, 11:33 AM

For those of you running cat-less front pipes, are u getting much exhaust smell?

brichard0625 · 09-22-2013, 11:38 AM

Quote:

Originally Posted by Fizz

For those of you running cat-less front pipes, are u getting much exhaust smell?

im getting a little i wont lie..but only when im really revving on the engine...on a normal drive i smell nothing

Circuit Motorsports · 09-22-2013, 11:48 AM

Quote:

Originally Posted by solidONE

I just installed a front pipe on my FR-S earlier and came back from a drive. All I can say is, if you don't already have one, do it.

The amount of partial throttle power and response I gained was ridiculous. I had installed a aFe R5 filter previously and my butt dyno was like "meh I think I got a bit more power..." After the front pipe it was like "dayum!" It was that noticeable, the increase in power and response. I'm quite positive if I granny/feather the throttle for MPG, I'd get quite a bit more over the factory front pipe.

Only mods I have that would affect the engine output is the aFe r5 drop in, and the up pipe. This leads me to believe that the stock fuel map is ridiculous rich for these 2 mods to make this much of a difference.

You are correct, the stock fuel mapping is rich -- quite rich for an N/A car. I'm sure you are feeling the difference -- that is a big restriction you removed from the exhaust, increasing flow.

Add a header and tune and you will have no more torque dip at all, and very nice power and torque gains across the board.

-- Bob

wparsons · 09-22-2013, 04:26 PM

Quote:

Originally Posted by ZionsWrath

What do you think of sound on the following (in terms of quietness/loudness):

AVO turbo header, 2.5" overpipe, front pipe, midpipe, and stock muffler?

If I don't go innovate this is my plan for exhaust setup.

I'm looking for OEM sound level or less with the best performance gains.

A turbo will greatly quiet down any exhaust, as well as kill a bunch of rasp so you'll probably be EXTREMELY quiet with the stock muffler and a turbo.

solidONE · 09-22-2013, 07:54 PM

Typically when you open up the exhaust on a otherwise stock car you'd expect the to gain in the top end and maybe even lose some at the low end and with partial throttle. The willingness of the car to pull forward with only slight throttle after installing the front pipe really caught me by surprise. I'm sure when you go WOT the difference may or may not be as noticeable, but the difference when just putting around is really that big IMO.

solidONE · 09-22-2013, 07:59 PM

Quote:

Originally Posted by whitefrs

just got my j2 front pipe.... will be installing today

Let us know your impressions after the install. I'm sure you will be pleasantly surprised as I was.

solidONE · 09-22-2013, 08:01 PM

Quote:

Originally Posted by Grip Ronin

i did a front pipe a while ago, didn't feel any difference.

Did you have the header in before you did the front pipe?

pmccut · 09-22-2013, 08:05 PM

Quote:

Originally Posted by whitefrs

just got my j2 front pipe.... will be installing today

Is your car working yet??

whitefrs · 09-22-2013, 08:13 PM

Quote:

Originally Posted by pmccut

Is your car working yet??

Car is running perfect on e85

Sent from my iPhone using Tapatalk - now Free

Fizz · 09-22-2013, 08:48 PM

Quote:

Originally Posted by solidONE

Typically when you open up the exhaust on a otherwise stock car you'd expect the to gain in the top end and maybe even lose some at the low end and with partial throttle. The willingness of the car to pull forward with only slight throttle after installing the front pipe really caught me by surprise. I'm sure when you go WOT the difference may or may not be as noticeable, but the difference when just putting around is really that big IMO.

So which front pipe did u get btw? Catted or catless?

09-22-2013, 09:28 AM	#15
Tansey86 Senior Member Join Date: Sep 2012 Drives: 2003 Subaru Outback Location: Long Island, NY Posts: 1,318 Thanks: 154 Thanked 529 Times in 300 Posts Mentioned: 3 Post(s)	Bacardi and coke. Do it. Do it. __________________ " I know a lot about cars, man. I can look at any car's headlights and tell you exactly which way it's coming. "

09-22-2013, 10:31 AM	#16
Grip Ronin The Mechanic Join Date: Mar 2012 Drives: Civic Turbo,FR-S Location: NJ Posts: 928 Thanks: 130 Thanked 171 Times in 119 Posts Mentioned: 2 Post(s)	i did a front pipe a while ago, didn't feel any difference. __________________ IG-Joey_Soul Progress Thread Ported billet 20G

09-22-2013, 11:24 AM	#18
brichard0625 Senior Member Join Date: Jun 2012 Drives: 2013 Scion Frs(Scarlet) Location: Bronx, NY Posts: 907 Thanks: 172 Thanked 386 Times in 177 Posts Mentioned: 4 Post(s)	im running stock exhaust with just front pipe(no cat) and theres def a difference. there is a little rasp and i passed emissions on my car without the cat. I believe this car has two cats and if you delete one theres no issues. the cat in the header i believe will cause issues because thats where the two o2 sensors are at. __________________

09-22-2013, 07:54 PM	#23
solidONE Senior Member Join Date: Dec 2012 Drives: FR-S Whiteout Location: California Posts: 2,863 Thanks: 1,808 Thanked 791 Times in 611 Posts Mentioned: 42 Post(s)	Typically when you open up the exhaust on a otherwise stock car you'd expect the to gain in the top end and maybe even lose some at the low end and with partial throttle. The willingness of the car to pull forward with only slight throttle after installing the front pipe really caught me by surprise. I'm sure when you go WOT the difference may or may not be as noticeable, but the difference when just putting around is really that big IMO. __________________ Intent > Content cowardice is the mother of cruelty.

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09-22-2013, 11:06 AM	#17
stugray Banned Join Date: Sep 2013 Drives: 2013 GBS BRZ Limited Location: Colorado Posts: 1,925 Thanks: 627 Thanked 1,445 Times in 711 Posts Mentioned: 41 Post(s)	I would assume that swapping from the catted stock front pipe to a non-cat front pipe means that you would fail future emissions tests? Or is the engine clean enough that you would still pass?

09-22-2013, 11:33 AM	#19
Fizz Senior Addict Join Date: Jan 2013 Drives: 86 GT Location: Perth, Australia Posts: 1,217 Thanks: 249 Thanked 336 Times in 215 Posts Mentioned: 12 Post(s)	For those of you running cat-less front pipes, are u getting much exhaust smell?

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