HIlborn Mech. fuel injection on a street strip car??

[dieselgeek]

We tried the Dial-A-Jet on a car at bonneville and it was a horible experiment. The problem is, the "jet" isn't necessarily right at all RPMs or loads. Do you need to be "dialing" all the damn time to keep a decent mixture.

[ecorl]

Yep, been there...done that with my prostreet, blown injected v6, on race gas. I used a small electric pump t'eed into the injector lines to prime it for starting. just hit the button a few seconds and it worked fine. problem with a dial a jet is that you really cant run it inside the cock-pit because you would be running fuel lines inside. I also used a surge tank with a holley blue electric pump keeping it full from the fuel cell in the rear. Yes, part throttle performance stunk, and I was constantly adjusting the BV, butterfly's, and pills. You gotta run them rich because there is no accelerator pump. On a quick tip-in, there is a temporary lean. It would be more forgiving on alcohol. You can make it work with some trial and error but be prepared for constant tweaking, stumbles, pops, and throwing wrenches. I finally wised up and converted to EFI. I put the electronic injectors where the mechanicals were and used megasquirt to tune. I miss the simplicity of MFI. If you are going to drag race and you are concerned with idle and WOT, then MFI isn't that bad.