12-08-2008, 09:23 AM #1
- Join Date
- Jun 2008
SEA-DOO GTX Limited Supercharged (2004) - how to get more power?
Hi, folks! Does anyone know, how to get more power from
SEA-DOO GTX 4-TEC Limited Supercharged (2004)? What upgrades should I install and how many hp will I have then?
12-08-2008, 09:29 AM #2
Hey Elvis1956, welcome to the site! One thing you need to decide is how fast you want to go or how much money you want to spend. Either way, one will affect the other.
You might first try this link on the Sea Doo FAQ forum:
There is plenty of information to digest and lots of very knowledgeable people around to help.
12-08-2008, 09:30 AM #3
Oh, and I should have asked if you have replaced the ceramic washers in the supercharger. If you haven't, your engine is running on borrowed time and that should be the first mod that you do... Ron
12-08-2008, 10:15 AM #4
- Join Date
- Jul 2006
More Booooooooooooooooost........ The more boost you make the more fun you'll have..
12-08-2008, 01:02 PM #5
- Join Date
- Sep 2006
- winchester va
u can turn it into a 215 motor if u want thats wat i did, u need to be carefull how much boost u add 2 the 04 gtx because of the cast pistions i added the 215 fordge pistions, if u want a lot of gain then sell the 04 and buy a rxt its cheeper and the resail will b better but if ur looking just 4 a little u can start with a green wheel 4 the s/c get a after market i/c a lot of people are useing the xs i/c a few people have made up kits u can buy at a fair price riva stage 1 repitch the prop check and c if ur 04 has the metal pump the latter ones had them if not i would get a used 1 and put in
12-09-2008, 05:39 AM #6
i have an rxp ecu, knock harness an fuel pressure regulator off an rxp 275.00 shipped in the us 48
change your sc washers if they are stock- they break & cause major engine damage
-get an air intake- riva 3in- I might know of a used one forsale
-bend you stock prop or get a solas after market prop
- pump wedge is a must
- fill your ride plate holes
my gtx is going 67mph
let me know if you want the ecu- it will change your power curve, higher rpms- Yellow jacket is right. you cant do much more since the pistons are cast
12-09-2008, 05:40 AM #7
also intaKE GRATE OR OPAS CLIPS WILL HELP
12-09-2008, 07:32 AM #8
12-09-2008, 08:34 AM #9
12-09-2008, 02:32 PM #10
The 04 185 motor will cost you to keep going faster.... if you plan on 70+ then id say sell the 04 and get an RXT instead, RXP if you mainly ride it yourself...... Getting the boat to move fast will continue to deplete your bank account, trust me, been there...
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