08-16-2010, 05:25 PM #1
Removing secondry muffler??? 2003 GTX SC
New to the thread and the site, think its great, not much modding info here in Ireland.
I've tried searching the forum but only getting lot of kaw stufff.
Can I remove the secondry muffler, and pipe the first to the existing exhaust?? Is it worth doing for performance, if it will make it sound bit better would also be a plus for me, ears haven't started acting up yet!!!
Also what exactly does the resonators do?? suppress the sound?? can i remove the first one on the port side of the ski, any point?
Many thanks in advance and go Jerry on site, its the biz and pissed I never found it before...
Sorry if this has been answered in previous thread, did look.
Go raibh mile maith agat.
Ken O'Connell - Limerick - Ireland
08-16-2010, 05:55 PM #2
Welcome to the forum.
On your year and model of ski, the second waterbox is the resonator. It is plastic on newer models. Its purpose is for sound suppression. Yes you can eliminate it, but it will not change performance. You do not want to eliminate the watetbox connected to the j pipe.
08-16-2010, 06:09 PM #3
As far as I can see, there's a muffler which the manifold goes into, the outlet of this then goes onto a Y peice which goes onto the LH resonator and then the black flexible pipe to the secondry muffler on the starboard side. This muffler then goes to the exhaust out and a smaller RH Resonator.
Can I elimate the secondry muffler altogether?? What exactly is the J pipe u mention??
Thanks for the help, appreciated.
08-16-2010, 06:25 PM #4
SeaDoo did over kill big time on that model. I use to have one. The j pipe is between exhaust manifold and waterbox. You can eliminate everything after that first waterbox.
Obviously you have to be plumbed from waterbox to exit on Hull.
08-16-2010, 06:26 PM #5
Where the main water box exits with Y, cap off the one that goes to LH resonator.
Eliminate the remaining resonator and plumb to exit in hull.
Here are a few old pics, this was plumbed for thru hull tip but can be plumbed for stock exit very easy.
08-16-2010, 09:40 PM #6
i have the 03 with the funky exhaust.
get a shorty waterbox and a thru hull fitting.
eliminate all the extra crap, and plumb the box right out the back thru the transom, makes the ski tons easier to work on, like the supercharger, and the bilge alot easier to access/clean.
sounds awesome too!!!
if you dont want to spend the money on all teh fancy exhaust parts. at least pull out both resonators, the black (extra) waterbox, and plumb the main waterbox to exit thru the existing thru hull(in the pump cavity)
you could also get your waterbox cut and welded to make your own shorty waterbox, and have it exit out the back or anywhere you want.
its been discussed on thsi board alot, basically any waterbox you can cut and weld will be good enough.
08-17-2010, 01:45 PM #7
Hey guys... thanks for the info and help.
Will take out the resonators and get rid of the secondry muffler, will see how it is like that and then cut the water box, should be able do that and get it welded, can do be stainless but not done any aluminium so will get one the lads to....
Hopin to order a stage 1 kit and external cooling( kinda need to cause the internal is leaking out the ride plate).... will keep ya posted and again thanks for the help....No one to talk to this side of the water ....
Later - Ken
08-17-2010, 09:46 PM #8
you can make your own stage 1 kit pretty easily, keep reading on this site for a week or two its all in here.
i got a
2003 GTX SC
aluminum RXT pump with 12/20 SOLAS
2005 SC with Akit wheel, same as greenwheel. upgraded washers/bearings
greenhulk waterbox w/ rear thru hull
160* tstat mod
4" air intake w spectre filter
2* pump wedge
rideplate holes filled
i'm getting 7450-7500 rpm and 65 mph average
not worth spending too much on the GTX SC as it will never keep up with a stock 215 or 255 ski, unless you spend way too much money alot cheaper to just upgrade the ski...
08-18-2010, 05:39 PM #9
thanks for the info.... will prob work away wit the 185 for the mo.... have a paint job so will tip away with it for a bit...
Once have some good speed and reliable i'll be happy out.....
Will keep ya posted.
Of to the pub
08-19-2010, 12:21 AM #10
- Join Date
- May 2007
- Auckland, New Zealand, New Zealand
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