hey guys im hew to this fuel injection thing i jsut got this 700 and i want a pipe for it.....
i was lookin at a FMF slip on do i need to buy a computer programmer and will the computer set its own air fuel mixture??? any help will be appreciated

 

Yes you will. There is a lot of misinformation floating around out there but the fact is that you DO need a controller. There are many different types available...it is what you want to spend for one. By the way congrats on your purchase[img]i/expressions/face-icon-small-smile.gif[/img]

 

Congrats on an awesome quad.

Any mods you do: intake, exhaust, ect, will require an aftermarket programmer to adjust the fuel. The factory computer will NOT adjust for mods.

Each programmer on the market has their own procedure. You need to get familiar with each one and decide what works best for you.

I have the Dynojet. It does NOT set itself. They have about 43 pre made maps for the most popular intake and exhaust combonations. Im using one of their maps and it works well for me. I sent the map to the programmer via a USB cable between it and my lap top. The maps are free to download off Dynojets website. You have the ability to fine tune the fuel richer or leaner at various RPM increments as you see fit.

Good luck.

 

OK i raced a LTR-450 that was piped, jetted, had an aftermarket injection system, and one tooth smaller sprocket in the front. He only beat me by about 3 legnths at the top on a stock 700. Thats besides the point though. He said he had a 700 and to really wake them up all you had to do was add a slip-on pipe, take the sprocket tooth down one in the front, and get an after market fuel managment system. He said the one from HMF was really effective. This can all be done for about $500 and you will have a totally different bike.

 

The Dynojet Power Commander may be the best after market fuel control available today, but even it does not allow full control over the fueling of the Raptor. It allows you to add some fuel or add more fuel, but it does not allow you to subtract fuel at any point in the Raptor's fuel map. All of the current after market fuel controls "piggyback" on the manufacturer's ECU and accompanying base fuel map. They simply intercept the injector pulse and lengthen the pulse width to tell the injectors to stay open longer and squirt more gas. None of the currently available fuel controls can actually reduce the amount of fuel from that provided the stock ECU. Currently available fuel controls will improve performance but none optimize performance across the entire spectrum of engine operation.

If you're going to make modifications. You're going to need some kind of fuel control for sure.

 

The only way for an engine to automatically correct its fuel map is to provide for a closed loop system that tracks targeted air to fuel ratios versus air to fuel ratios actually achieved while riding. The feedback needed to correct a fuel map comes from a closed loop system with a wide band oxygen sensor and/or exhaust gas temperature sensor. These sensors indicate the efficiency of combustion and provide guidance for adjusting the base fuel map. While the feedback information may be stored in an on-board data logger, it is likely the actual adjustments to the base fuel map will need to be made on an external computer. Just my guess.

 

I cant wait to get mine... It will probably be in August. Good luck with the new ride.

 

i got a raptor 700

i have a monster from monster quads and a k&n filter and trinty stage IV controler and i was raceing the other day and wheelied fourth gear so i think what i have set up on mine is awsome