If the missfires are random, I wouldn't suspect coils... but it may be a fuel pressure issue... have you read the running pressures? (at idle and under load) The fuel rail has a tire valve sized valve to hook to, the same size as old fords, so the cheap fuel pressure testers from the parts stored will work.

__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama)

You make something idiotproof, they'll make a better idiot

You think professional is expensive, just wait until you pay for amateur.

Never let your sense of morals prevent you from doing what is right.

Examine what is said, not who speaks.

X5 pics

RIP 4.6is.....

2003 4.6is