Dude... the entire rail should always be filled... i mean there isnt air in there or open space.. It wouldnt be "under pressure" if there was open space for it to slosh around and the car would never run right.. Personally I can be almost POSITIVE that its because your buddies ITR was bogging down while trying to push the engine "against itself" during a slide. Fuel pressure does not become a problem with side loads unless the load is great enough and the fuel level low enough that nothing actually goes into the pump. But the only time ive EVER heard of this happening, is cars on slicks, going onto a circle track for the first time, without proper fuel tank modification, and under 2 gallons in the tank.

Seriously guys, where do you come up with this stuff sometimes. I mean sliding gives far less lateral G than the same car giving itself the best rate of turn it can provide at say 50mph. So who would buy an ITR if the engine shut off when it was providing .82 lateral G on a skidpad.. I mean the car would be complete junk if that happened.

I'm sorry, i'll stop ranting, but just use your heads sometimes guys.

</rant post that comes from answering tech calls at 9AM then seeing this>