If you've already ruled out coil, plug and injector by cross swapping then the next step is to check signals to those components with a oscilloscope and compression test/leakdown test. If you have an 04 and up V8 it could be valvetronic related as well... if all else fails pay for professional diagnosis.

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"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