you have to deal with return lines, or else all of the race fuel will be dumped into the street gas tank, plus you have no way of knowing when the engine is running on 100% race fuel and not a race fuel street fuel mix...

 

OK, so I thought about it.

Staged injection, so it comes on with VTEC, would work perfectly. So would a Moates 2Timer, have the switch also control which fuel pump and which bank of injectors gets powered.

/thread

 

thats exactly what i was thinking, the only way to do this reliably to guarantee that your getting race fuel instantly