efini y-pipe better?
11-19-02, 09:32 PM
#1
No Cup Holder Racing
Thread Starter
Join Date: Apr 2002
Location: Bay Area
Posts: 1,446
Likes: 0
Received 0 Likes
on
0 Posts
efini y-pipe better?
i'll admit it, too lazy to do search...curious if the efini y-pipe does anything in terms of better performance, air flow, etc. i know it's more reliable in that it won't crack but besides that is it better than the regular one?
11-19-02, 10:08 PM
#4
Full Member
Join Date: Oct 2002
Location: Asheville, NC
Posts: 100
Likes: 0
Received 0 Likes
on
0 Posts
The Efini Y-pipe replaces these two pipes with high quality aluminum pieces. The black plastic crossover tube has a tendency to crack on both ends and the rubber connector between the Y-pipe and crossover tube has a tendency to split. These cracks can be the source of hard-to-solve boost problems. The cracks can't be seen unless you remove the tube and pry it open, and yet under boost pressure the cracks open up and vent your boost (which is sometimes accompanied by a loud whooshing sound from under the hood). The Efini pipe also moves the air-bypass valve connection out of the air flow so it should breath a little better than the stock pipe. that help some? if not, ohwell.
Brandon
Brandon
not going to intall it for a while though.
11-20-02, 12:15 AM
#6
NorCal 7's Co-founder
Is the Efini Y pipe still usable if you go non sequintial with twins?? I'm planning on getting the BNR stage 2 upgrade but would like to get the Efini Y pipe as well just so long as I can use it if I decide to go non seq. All help would be appreciated.
Zach
Zach
Trending Topics
11-20-02, 06:53 AM
#10
Lives on the Forum
Mazdaspeed Motorsports Development claims 10 hp improvement when using the Efini Y-Pipe...
http://www.mazdamotorsports.com/weba...0001&langId=-1
http://www.mazdamotorsports.com/weba...0001&langId=-1
11-20-02, 10:47 AM
#11
I installed one a couple of weeks ago. I thought it was an easy install, and I'm no expert mechanic. Of course I compare everything to my downpipe install which was a "welded stuck bitch"!!
The y-pipe increased my boost. I had to do the home depot boost controller. I suggest doing the boost controller at the same time as the y-pipe so you don't have to remove all of the same stuff again.
I also have my stock air box mod.
Adam
The y-pipe increased my boost. I had to do the home depot boost controller. I suggest doing the boost controller at the same time as the y-pipe so you don't have to remove all of the same stuff again.
I also have my stock air box mod.
Adam
11-20-02, 01:05 PM
#14
It's just a straight bolt in. You get the y-pipe and a new aluminum tube that goes across the top to the existing flex tube. The rubber coupler is eliminated. It matches nicely with the intake manifold.
The 10 hp supposedly comes from better flow, and less expansion of the line duing boost. It no longer flexes upward during boost.
Adam
The 10 hp supposedly comes from better flow, and less expansion of the line duing boost. It no longer flexes upward during boost.
Adam
11-20-02, 01:20 PM
#16
All out Track Freak!
iTrader: (263)
Join Date: Jul 2001
Location: Charlottesville VA 22901
Posts: 10,672
Received 412 Likes
on
250 Posts
just look at your stock pipe then the efini pipe. The efini pipe has less bend and smoother lines on the inside which means better flow. Just like the exhaust and ports any thing relating to flow will create more power in relation to how heavily your car is modified for air fuel combustion.
11-20-02, 01:28 PM
#17
Lives on the Forum
Join Date: Dec 2001
Location: San Lorenzo, California
Posts: 14,716
Likes: 0
Received 8 Likes
on
8 Posts
Originally posted by RX7SpiritR
Do you have to do any fabrications when you install this on an american FD? Or is it a direct bolt on? Just wondering.
Do you have to do any fabrications when you install this on an american FD? Or is it a direct bolt on? Just wondering.
Thread
Thread Starter
Forum
Replies
Last Post