MSefi.com read only forum (Jan.15,2018)

I had the thought on my bike, somewhat in an effort to keep part of the classic feel, to have the manual choke actually open a fast idle valve or crack the throttle a nudge.

Part of what I love about the 35 year old bike is how manual it all is.

And part of what I don't is how manual it all is

A pump that can flow enough for 500hp is going to draw some current reckon. I'd look at something that's designed for small engine electrical systems. On a 94 Arctic Cat EXT 580efi, the in tank pump actually has hose barbs on either end... I don't recall if it has a bypass though that exits through ...

Most people don't continue to use stock narrow band O2s with megasquirt. All the installs I've been involved with had permanently installed Wideband O2s for closed loop EGO correction. But you don't HAVE to use closed loop. Once you're tuned, assuming you're all set up right through and through, ope...

I'm not understanding the point of the electronic throttle? Sounds like you want to use megasquirt like an add-on injector controller, which is possible. You'll just need to add the injector(s), add a coolant and air temp sensor and the tach signal and map hose. That's all you need to do what you ar...

I'm determined to find it. I figured out how to record on my scope. Turns out my laptop is just too chunky which made for frustrating attempts. I loaded up on my desktop and the recording function is really amazing; whole new nerdy world. My wife splits town Friday so I'll haul my desktop into the ...

I'm no expert on 'scopes, I have a Velleman HPS10, which does about a million things I can't begin to understand... If you change your period to a couple seconds or more you should be able to see if there is a miss in the VR... looks like it might have enough resolution for that, mine does if you zo...

It looks like you have a laundry list of things you've tried... Compared to engines I've scoped, your signals look fantastic. I have a hard time believing that's where your problem lies. Do you have both channels scoped during an RPM drop at all? I'd be very curious to see if the VR in/out changes a...

Thats an interesting point that I have never considered...

Also, high amp chargers put out a heck of a lot of voltage when cranked. So that's another consideration.

You might want to consider an EFI snowmobile Throttle body. I've played with them from a 94 Arctic Cat EXT 580. They can be separated and you could use one, or use both of them with a little work to the intake. Built in bosses for injectors is a nice touch. Most automotive throttle bodies are not go...