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Fuel Injection Conversion

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I don't see any issues on a normal healthy charging system for the fuel injection. This project has certainly whetted my appetite for something on my 1100. I watch with keen interest.
 
i think my fuel pump is under 2 amps.

my next project is going to be a digital gauge to show all my sensor readings and I think I'll put an amp-meter on it.
 
Wow, under 2 amps sounds very low, very nice. Does the pump have integrated returnless pressure regulator?
 
its the intank pump out of a 2005 GSXR. I mounted it in a small auxiliary tank with hose barb fittings to connect the tank to the fuel rail and gas tank.

I have the return from the rail going to the auxiliary tank right now but I think the gas is getting way too much heat soak like that so I'm gonna have to figure out how to send the return to the main gas tank instead.
 
Hey Jaysihn, I was wondering, are you still a student at Purdue? It's nice to see an ME doing real world stuff. Are you doing FSAE too? I went to UIUC, I considered Purdue but UIUC made a better offer.
 
nope I graduated in Dec. 2006.

I didn't do any of formula or mini baja stuff. I was really excited about it freshman year but never actually got into it. I joined the Purdue Offroad Club when it was still pretty young and got involved in that where we actually worked on our own offroad vehicles and in my opinion did a lot more interesting stuff.
 
Good to hear it. I actually got to do the Formula team for my senior project. I worked on the engine team and I learned a ton of stuff. Namely that I didn't have anyinterest in working in the automotive field. I got to collaborate closely with an engineer at Ford when I was doing the CFD work on the intake. All in all, it was the best thing I ever did at that school. Keep doing good things. Keep us updated. I have a megasquirt in my toolbox that I can't figure out which bike I want to put it on. If I ever get my GS going, Maybe I'll use it on that one. GO ILLINI!!!
 
Are you doing FSAE too?
Click to expand...

GO HUSKIES! :P

I did Formula FSAE three years at NIU - not just for my senior design. I miss that stuff, but everything I learned about fuel injection and engine management I learned there. Always thought about putting fuel injection on an older bike...but I'm keeping it for something newer.

Good luck with your project!

~Adam
 
Add EFI usually doesn't add horsepower. If it's jetted lean on the carbs, fine-tuning the fuel map may slightly improve horsepower...but you're not going to see significant changes.

Just throwing it out there...
 
it should probably make a little more because of the added resolution I'll have in tuning. I am able to tune pretty much any spot in the rpm vs. manifold vacuum graph to have its optimum amount of fuel.

but i agree the improvement probably wont be much.
 
I agree, EFI shouldn't add much power by it self. But when you replace stock CV carbs with larger throttle bodies it may gain some. And with EFI large throttle bodies doesn't hurt low end like with large carbs.

I got 14 hp more and loads of low to mid range torque to my stock GS1100. And I'm using just 34mm throttle bodies. But I guess that big part of this improvement came with new exhaust which I made at the same time.
 
What size turbo are you using on the GS1100? Comp and turbine wheel.

I'm in the turbocharging industry...so I'm curious. :)

~Adam
 
Yes, the turbo is Garret GT1749V. Compressor side is 49/35 mm A/R 0.46, turbine is 43/36 mm A/R 0.61. Works pretty fine, starts to boost even below 3000 rpm and doesn't choke badly at top end. But I would recommend something slightly bigger, even for mild street setup. And I'm not absolutely sure if the VNT mechanism is worth of all extra complexity (external wastegate and vane control).

Actually I didn't select this turbo for the project. I just got it for very cheap, estimated that it should work and decided to start an experiment. Bad way to start a turbo project, by the way :) If you do it in proper way it will be damn expensive anyway. So it's better to select as suitable turbo as possible, it won't affect much to total cost.
 
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