In 1996 Sea-Doo brought out the industry's true performance first three-seater, the GTX. It was powered by the now incredibly proven 787 series Rotax 110 HP power-plant. To keep it's place as a leader in the rapidly growing 3-seater market the GTX in 1998 the GTX was upgraded to the new 947 series engine that produced 130+HP. Granted it had a few teething pains, yet was still the machine that the masses wanted of this by-now largest share of the New Personal Water Craft sold. The Three-Up craze was just getting started.

With the EPA's mandates to meet much stricter emission requirements for all internal combustion engines on our waters, many thought the 2-stroke to be doomed.

With much foresight the Sea-Doo engineers and higher-ups had the vision to beat everyone to the punch by introducing the cleanest running 2-Stroke ever produced and used in a watercraft application. The 2000 GTX and RX.

The High-Tech Engineering of this system has already shown its long-term efforts in the advanced field of making things less polluting and more fuel efficient. And very powerful while at it.

Something we older "Tuners" thought we'd never see.

More HP, extremely high fuel efficiency, and the cleanliness of a lot of the modern 4-strokes! Still a little hard to believe, but it is reality and it's now 4 year-old technology.

Perry Performance Group is happy to be able to feed the True Power seekers' needs with our Level One DI Performance Kits.This is one of the best parts, it still keep runs squeaky clean and fuel consumption friendly.

The True Level One Kits do require 91-93 Octane Fuel.

Remapping of the MPEM or "ECU" (engine control unit) of the high-tech DI technology simply requires your MPEM and DESS Tether to be sent to us for this mod to be done. We will also need the Cylinder Head for the boost in compression ratio.

We have been doing DI modifications for a long time now, and they have proven to be as bullet-proof as a stock machine.We are very proud of this as it was years in the making.

It took a long time to top the development work of the OEM machine within such stringent parameters.

The dyno says a nearly 14-18 HP gain, depending on year model. You'll believe every bit of the claim and charts, especially after riding one.

As the photo's show, you simply disconnect the negative battery cable, then the positive, and remove battery if necessary. Then remove the MPEM by simply unplugging it gently yet firmly by pulling the big connectors while pinching the retaining clips for their rubber ribbed seals to let loose. If you are salt water rider, heavily inspect this area for any damaged or corroded pins and connection quality at ALL locations. A bright light is a good idea. You simply unbolt the MPEM after it is unplugged and set it aside.

Next you'll want to remove the fuel-rail hold-down hardware.

Unplug the wires and the fuel rail simply lifts up WITHOUT disconnecting the fuel lines, so beware of this, it isn't necessary at all. Remove the air and fuel injectors before shipping to us unless inspection is wanted or needed. This modification, like all mods, should only be done on a good condition, properly running unit. Remapping will not fix a faulty MPEM.

After removing the head bolts lift the cylinder head off and using a good soft cloth, wipe the bores of your cylinder.This also makes a good time to clean your RAVE valves.

Cover the open cylinder-block with a clean cloth. Removal of the stock restrictive flame arrestor is next, very easy to do but be observant of the small hoses that are also connected to the plastic monster! The small filter is for the DI compressor.

The hose is a direct fit for the filter. The open flame-arrestors easily clamp on the dual throttle bodies. The small DI filter has a mounting tab and we suggest mounting it up high and under the engine bays' opening rib via zip-tye. Many options just keep it high and shielded. The photos show most of the steps and we recommend that ONLY a mechanically inclined person work on their own machine from a safety stand-point and a quality of workmanship stand-point as well. We want your machine to be fast and safe. Carefully pack and ship us the head and MPEM with the DESS Lanyard.

Within a week we'll be done with your components and ready to ship back to you. The Fun-Factor in your GTX DI or any other Sea-Doo DI powered machine is brought-to-life by our High Performance Kit. Expect 3-5 MPH speed increases, depending on Year/Model/Set-Up of the machine, and do expect BIG acceleration gains making the GTX DI possibly the best long range Sea-Doo made. Several Impeller options are available and we help you select the one that best fits your needs. The prop comes with the kit and it will be needed with the added power. Let us take you there.

Glen Perry/Perry Performance Group