Mooting an idea.. what do we need to do to make our ole' GS a Fuel Injected Bike

[TheGoodGuy]

Be it mechanical fuel injection like the ole delorean car or a electronic fuel injection.

We could do Throttle Body FI .. use one injector and a timing controlled by the stator's pulse signal or something.

Any thoughts??

[lewismug]

I have kind of thrown that idea around in my head a little as well.  How are the newer bikes set up?  Electronic?

[TheGoodGuy]

As far as I know the newer bikes have a TPS module but that shouldnt affect things. The way I see it, one could just replace the carb with a injector mixture module with the lift gate to control throttle.

[quiktaco]

Ok, it's really easy actually.  First, get your hands on a fuel injected bike.  Second, replace all those logos with GS logos, and presto, you're done!

If you were to actually do this, it would have to be electronic/computer controlled.  A mechanical controlled would give you more problems than it would be worth.  You'd need injectors, vacuum lines, oxygen sensors, a place to fit all this stuff on the bike.  As well as yanking the carbs in place of throttle bodies.  I'd probably upgrade electrical, cause you'd want to be able to keep that battery charged.

Don't know what else, this is just off the top of my head.  Personally it's more trouble than it's worth, and it's not going to net that much hp/torque.  The engine is still just a 500cc, and even with a controlled spray, gas mileage and power can't increase all that much.

What is it that you're looking to gain from doing this?

[TheGoodGuy]

What is it that you're looking to gain from doing this?

Not having to deal with carbs!

[lewismug]

I think it would be a headache to get everything set up correctly at first, but maybe it would alleviate a lot of problems that come with carbs.  It's much easier to pull an injector and clean it than to disassemble the carbs for a cleaning I think....but then again, I HATE messing with carbs.

[scottpA_GS]

Its been done on a GS500

Ice77 did it... w/ a turbo to boot 

http://gstwins.com/gsboard/index.php?topic=34218.msg457937#msg457937

What he used:

two Kawasaki GPZ 750 throttle bodies, custom spacing and throttle linkage, one off fuel rail. Fuelmiser FPE-240 electric fuel pump, Ryco Z200 efi fuel filter, adjustable rising rate fuel pressure regulator, Haltech F9 ECU.

[quiktaco]

Carbs are easy!  Take them off once and replace the float bowl bolts with allen heads, then you can do everything while on the bike from then on.  lift the tank to get to the needles and unscrew the allens to remove the bowl, float, jets, etc.  Get them clean when you take them off the first time, then run seafoam in the gas every once in a while to keep them clean.

If it's tuning the carbs that's the problem, then you've got to realize that a lot of it is trial and error.  You can get close by guessing, but to get spot on, it all depends on the individual bike.  With the allen heads in the bowls though, changing jets is about a ten minute ordeal.  Very simple.

[quiktaco]

I could see going FI if you're going to go turbo, cause it needs a lot more fuel and at different RPM's and different throttle positions.  A carb would suck to have to tune to the irregularities of a turbo.  However, if you're putting the money into a turbo and FI, then why not get a better bike.  Something that's made for that much power.  Also, even a turbo'd 500cc is still just a 500cc.  It may make somewhere around 70-80 hp, compared to the 40+ on a stocker, but it's still significantly less than other bikes stock.

And could you imagine if that turbo kicked in while in a curve.  Break the rear wheel free and send you to the ground.  I think Turbos on bikes would be best for the drag strip, but maybe not.

[scottpA_GS]

The 2 that have done turbo GS's here did it just to do it  Im sure they knew it would have been easier and cheaper to buy another bike. They did it for fun because they wanted to 

[quiktaco]

Yeah, that's the other reason.  Kinda like going Ethanol.  Doesn't seem to give too much gain of anything, but converting the bike to run on it is kinda cool.

[ohgood]

i've found a few 600cc snow mobile throttle bodies, megasquirt (1st gen) kit, and some odd junk at junkyards.

you could put the entire kit together for around $400 shipped. the thing is, finding a decent supplier that doesn't think his parts are OMG AWESOME BUY MINE NOW NOW NOW FOR $$$$$$$$$$ !

even a 10 year old snow mobile TB seems to carry some kind of stupid premium, like they were only made for special people, and buying one means you disgrace their private club or something.

sure, if you get lucky and can buy a batch of megasquirts and TB's, you 1/2 there. some of  the snowmobile TB's even have the same spacing as the gs's intake pipes.

[tussey]

I was thinking about to doing this for my Mechanical Engineering senior design project.

[fodder650]

Other things you gain from it. Well it wouldnt be as cold blooded as the carb models. Plus if its doing a better job of getting the fuel needed. It should improve mileage and even out the power delivery.  At least in theory

[mach1]

Dont forget to mention changing the intake and exhaust would be alot easier, elavation would not be a factor as far as mixture goes. If it was me and I wasnt having to budget for my new baby I would do after the r6 tail was done just for shits and giggles.

[ben2go]

I plan to use the new Micro Squirt with the end throttle bodies off of a GSXR1000.Everything else will be standard GM sensors.Fuel pump will be external mount 99GSXR600.Google micro squirt.There was a couple guys on the forums doing gs400/450 and a couple 500Es.They were located in Europe.

[The Buddha]

For knowledge reasons this may be worthwhile, but as a practical everyday thing, it will be 100 times the nightmare the carbs are. FI aint nothing but carbs with a bunch of wires wrapped around it everywhere.
Cool.
Buddha.

[mach1]

so Buddha are you nominating yourself to make a GSFI kit?