[quote] Benw94 wrote:"alloy tube, jb weld and jubilee clamps"
i love it. nothing better when someone makes something from nothing, and on top of that have it work and all.
however you got that ecu to behave while you basically cut off the injection...fair play to you, no lights on the dash either?
Well listen, it's pretty far along, and it will work because the concept is dirt simple.
My original plan was to use one tiny carb per channel.
But the velocity through it is so much faster than its designed for, the fuel has problems keeping up.
I was keen to try the lawnmower carb because a YouTuber put one on his old 302 Maverick with surprising success.
But in my case I have the throttle body, so the tiny carb throttle is just left wide open all the time.
I did drive it 20 miles like that, turning the injectors on below 1100 rpm.
Dazq told me this was possible, a few weeks ago, and indeed it was!
(When I use the Speediuno I plan on doing the same thing to the spark plugs, and applying the Speeduino's timing signal.)
Toward the end of the 20 miles the injector fuel pump fuse blew, and I don't know why.
Haven't touched the car for 5 days, as I had to work my regular job.
But then I realized this needle valve is the way to go.
Unlike an injector it will wet every inch of air.
Unlike a lawnmower carb, it will meter properly through the power range.
Keep in mind I've built only 1 of the 4 channels
but it should still supply highway power, and provide a lot of testing.
My first school was Aircraft Powerplants, then I had a job rebuilding VW bug and bus engines in the late 70's.
Then I joined the Navy and got sent to electronics school. (Old School electronics! 1982!)
I've had a few other simple inventions, that gave me the balls to try this.
But quite honestly, I don't see any way it will not work.
I had no engine light until it ran rough when the injector fuel pump stopped.
I also have a 2-4 psi pump for the lawnmower carb, and somehow it went dead too at the end of the 20 mile journey.
Really weird, but no big deal. I was using the radio dashboard power wire on the low psi pump, but I just received some fuse taps to give its own wire.
The injection pump is more of a mystery.
I put a switch in it's stock wires. Other things run off its fuse too.
But I will replace the fuse and also give it its own fuse (tap).
This is why I started with just one of the four channels; I knew there would be modifications and ideas from trying it.
The needle valve run by the Speediuno will be fantastic.
Now I will also be able to change the timing, which is inevitable. Vapor runs with more advance because it burns a bit slower.
Thanks for the intrest and enthusiasm Ben. We could really make some great things here, I think.
does very hot/cold weather affect perfomance of the system?
There will probably be add ons to cope with hot and cold weather.
Vapor lock may occur if the fuel lines are not insulated in hot weather.
In damp weather, icing may occur if the baffle channels get too cold. Encapsulating them with hot coolant may be necessary. They get super cold when the car is running.
Also a squirter at the mouth of the manifold may be necessary for starting in cold weather.
I'm not really sure though, because there is a lot of velocity where the normal fuel enters, so...that's a question mark.
I'm really honored to be in the company of you guys.
The Speediuno is fantastic and I want to learn so much about it.
Of course, making one for your own use will not likely violate a patent use law, so have fun with yours for now! 
seems like you paid attention in school 
- By purplelightning