|
The
Nissan EXA is completely responsive to exhaust modifications.
It should absolutely be your first performance modification.
From the contributions of club members and help from other
clubs, i've come up with what I'd say is the ideal system
based on a CA18DE motor.
It
starts with a 4-1 header system (Hurricane company in Australia
can sell you this), through to a high quality flexi-joint,
through to a low-restriction sports catalytic convertor,
through to 2 1/4" piping until you reach your muffler.
Here you have a choice, and this I would say yields the
greatest results in power (yep even greater than extractors
I'd say, but can't have one without the other in my opinion).
My choice was originally a 2 1/2" super flow muffler
from Walker. In short this was an absolute piece of junk.
It restricted so much of my power under 3000rpm it wasn't
funny!
So
what's the best muffler? I'd say without a doubt that the
Japanese tuning shops have the best exhausts full-stop.
You cannot go wrong with a HKS, Apexi, or Trust system.
They test their mufflers on a variety of cars and even go
as far as providing a recommendation of piping width for
their systems.
A
member from the club sourced me an Apexi N1 (NA 2 1/4"
version) muffler. Immediately the car sounded better, and
power went up considerably across the rev-range, especially
in the much needed bottom-end. The difference to me was
likened to running the car with air-con on high, and without
it on. Full day-night effect throughly great results and
probably the best money spent on the EXA so far.
|