So... will people who get rid of their LTX...

[shownomercy]

Nah, you took it out of context. Yeah, the front end stuff at the rail is new and fancy, but the rest of the fuel system from behind the rail/HP pump back to the tank is normal stuff. BUT......let me throw this out there since the DI performance market is yet young.........would new injectors be absolutely necessary? Obviously, they're variable rate injectors based off of fuel pressure. The direct injection fuel systems don't operate off of a given set PSI like normal wet manifold systems do. They vary with engine load/speed. That said, it could be an easy way to more fuel to drop a higher ratio high pressure pump into the mix, and FAR cheaper than new injectors. Just food for thought.......we're still very early in the DI performance world.

Well, I am assuming GM will learn from what they have gotten from the Dmax program and apply it to the DI stuff, as its very similar. Not sure how the gas high pressure pump will be working but stock diesel just has a draw straw in tank, nothing else. So the high pressure side is all there really is. Would be incredibly funny if they managed to rework a CP3 pump in to it for high pressure.

Again, based off diesel world, you can crank your rail pressure and rate, but you will out grow injectors, hence the 30%, 40% etc over sticks, and they ain't cheap. Microfinished tips and made to cycle at crazy pressures won't be cheap.

Not to be a downer, just hoping that GM did their homework on this one, or else their gonna be paying catch up soon.