MSD 4350 launch control.

[v-twin2busa]

Getting ready to install the msd 4350 .The bike will see alot of street riding so I plan on wiring it operate off a 12 volt positive signal rather than using the clutch to active it. My question is can I use a toggle switch or do I need to use a momentary switch? Thanks in advance for the info .

 

[Professor]

Use the clutch switch to activated it, but add a toggle switch to disable it when not drag racing.

I ran one both street and strip without the toggle switch. I didn't see a need to rev it that high with the clutch pulled in on the street anyhow, so it was never a problem.

 

[v-twin2busa]

Thank you thats a good idea I think I will go that route .

 

[Ludicrous Speed]

So, is this two step a plug and play, or are you splicing wires and using scotchlocks?

Looking to put a two step on my Gen1 track bike in the future, and want the simplest way....

 

[v-twin2busa]

MSD 4350 Launch Master 2 Step fits-Yamaha Kawasaki Hayabusa R1 R6 ZX14R Is very much a plug and play. As you can see here the over all wiring is pretty basic http://www.msdignition.com/instructions/Products/4350.pdf

 

[Ludicrous Speed]

DOH......

I looked at that earlier..... I did not realize that it came with a harness that plugged into the coils........ All the pictures just show that MSD box, and nothing else!

 

[Professor]

It is about as plug and play as you can get. It is not technically a two-step however. You still are using a factory limiter for the high speed. It only provides the low speed side of what a traditional two-step box provides.

If you are really interested in one, let me know. I've got the one I had on my bike. Complete with instructions, box, harness etc. I can hook you up!

 

[lankeeyankee]

Is it switching between cylinders such as 1-4 and then 2-3 or just uses the same cylinders?

 

[Professor]

I'm not really sure what method they are using.

 

[lankeeyankee]

I've seen guys at the track using a single step rev limiter and setting it low to use it as a 2 step.
The engine would load up on fuel if they 2 stepped to long and mess up the launch.. those would just kill the same 2cyl which will head squish with raw fuel.