Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

84 brat exhaust


  • Please log in to reply
11 replies to this topic

#1 Timber

Timber

    Newbie

  • Members
  • Pip
  • 5 posts
  • Post Falls, ID

Posted 11 September 2013 - 11:05 AM

What is the best straight exhaust to put in my brat? dual 1 1/2" or single 2"? (power and mpg wise)

Edited by Timber, 11 September 2013 - 11:06 AM.


#2 Legacy777

Legacy777

    Moderator

  • Moderator
  • 12,633 posts
  • Houston, Tx

Posted 11 September 2013 - 11:28 AM

Welcome to the USMB.

 

I'm going to move your thread to the Old Gen forum where it will get more attention.



#3 Timber

Timber

    Newbie

  • Members
  • Pip
  • 5 posts
  • Post Falls, ID

Posted 11 September 2013 - 12:59 PM

I thank you I thought I posted it there

#4 skishop69

skishop69

    If it ain't broke, you're not trying.

  • Members
  • 914 posts
  • Puyallup

Posted 11 September 2013 - 09:13 PM

Dual exhaust on a Brat is useless and can actually reduce power and other issues. 2" out is more than sufficient.



#5 Timber

Timber

    Newbie

  • Members
  • Pip
  • 5 posts
  • Post Falls, ID

Posted 12 September 2013 - 02:43 AM

Right on... that's what I went with. Any glass pack lenghts or megaflow suggestions?

#6 jono

jono

    New User

  • Members
  • 567 posts
  • Southern Hemisphere - AUS

Posted 12 September 2013 - 05:37 PM

Only just fitted the Y pipe of an EA82 onto my Brumby EA81. The pipe ID of original is 38mm, the EA82 L Series is 44mm. I now get crisper low end acceleration, improved drivability and still a quiet exhaust as the rar section is all still genuine.

 

The difference is really noticeable with ` 300kg trailer on the back which used to stifle things, now, it is almost as if the trailer is not there ! That much difference to my 30,000km old 40 thou rebore rebuild with 20/60 cam and LPG as the fuel - propane



#7 tullymc

tullymc

    Newbie

  • Members
  • Pip
  • 1 posts
  • Bend, OR

Posted 12 September 2013 - 09:42 PM

I was wondering Jono, how does the Y pipe from an EA82 mate up with the heads on the EA81? I have an EA81 and would love to get more power out of it

#8 Mykeys Toy

Mykeys Toy

    Subaru Master

  • Members
  • 2,044 posts
  • South Prairie, Wa

Posted 12 September 2013 - 11:25 PM

The Y pipes are interchangeable between the two.  Where the real hold up as ar as I can tell anyway is at the rear muffler section after the last exhaust donut the tubing is smaller.  That unless modding the motor is the only part I would mess with an forward from there.  I would love to go 2' as Skishop said just for more muffler options.


Edited by Mykeys Toy, 12 September 2013 - 11:27 PM.


#9 hatchsub

hatchsub

    Currently Subaru-less :(

  • Members
  • 2,620 posts
  • Guilford

Posted 13 September 2013 - 06:06 AM

On my former coupe i had a muffler shop custom fab me a 2" exhaust from the heads all the way to the tail pipe.  I may have gained a few hp in that but i really did it because i was tired of replacing rusted out exhaust every year.  I went with a full Stainless exhaust and didnt look back.  Magnaflow muffler out back too really gave the car a good tone.  Ask Beechbm69 what he thinks of it since its his car now lol.  



#10 BEECHBM69

BEECHBM69

    USMB Regular

  • Members
  • 153 posts
  • Virginia Beach

Posted 13 September 2013 - 06:50 AM

On my former coupe i had a muffler shop custom fab me a 2" exhaust from the heads all the way to the tail pipe.  I may have gained a few hp in that but i really did it because i was tired of replacing rusted out exhaust every year.  I went with a full Stainless exhaust and didnt look back.  Magnaflow muffler out back too really gave the car a good tone.  Ask Beechbm69 what he thinks of it since its his car now lol.  


I liked it so much I did the same thing to my hatch with a similarly pleasant result :-)

Dan

#11 bratman2

bratman2

    Eat, Live, Breath Subaru

  • Members
  • 468 posts
  • Aurora

Posted 13 September 2013 - 07:02 AM

I also have a 2" from the Y pipe back exhaust with a SS Magnaflow muffler. Love it!!



#12 jono

jono

    New User

  • Members
  • 567 posts
  • Southern Hemisphere - AUS

Posted 13 September 2013 - 07:35 AM

Yeah, what I did sort of baffles me as to how it gives what it does. It was a direct bolt up at both ends - flange and heads !

 

Pretty stunning that Fuji did not do something quirky so as not to allow interchangeability. What it did do was push the rear section back a little, stressing th hanger rubbers of the genuine rear section/ I am yet to custom fabricate its hanger bracket from the gearbox to rear of Y pipe - they don't mate up.

 

Feels noticeably more responsive starting with light throttle, also with a 300kg trailer, almost don't feel it is there !

 

Retaining the rear factory section, did not even measure it. Though at low idle revs tail pipe can be heard to sputter, fixed that on another by fitting 2" from back of Y pipe. No money for this unnecessary mod at the moment. I am happy - Feels like I imagine an EJ would feel like :)






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users