What's wrong with my car !!!! (Help)

Hey guys i have a weird problem with my car and i can't figure it out what's wrong with it need you'r help
ok first thing in the morning when i start the car has idle surge but it goes away.When the car get's to normal opetation temp it runs fine
but the problems start's here when i shut it off and let the car sitt for like 20 to 30 minutes and i start the car again it runs like it has 4 cilinders the whole car shakes when i give it a little gas the car seems like it want's to die and sometimes it does When i start to drive it the car has no power and seem's like it's not fireing on all 8 cyl after like 5 min of driving it's coming buck to normal and the problem goes away
what the hell is wrong with it i have new plugs wires and a year old MSD coil
did the coil go bad and there is not enough Volts in it or what?
or any other thing can make the car run like that
Any Ideas????????????????????

Thanks
Derek.N

ok thanks i will try to get a used coil from my local shop to see if that's the problem cuz i junk my when i got MSD
i would say the same it's loopey and the whole engine shakes like crazy it seems that is not running all 8 cyl
ok thatnks again

Derek.N

heeh i found the problem when i went for a oil change today its nothing like coil or tfi it's my damn fuel pump I had the BBK 190 Fuel pump put in on my car during the summer and since that time i put like 6000 miles on the car
and when i tryed to use tweecer and do the slopes for the injectors car ran like crap Sure it will when the fuel pressure is only 20 PSI
we Tryed to play with the fuel pressure and nothing still only 20 Psi so i called up summit and it's coverd under the waranty for 1 year so i have a new fuel pump on the way and i hope all my idle problems will be solved

Thanks again
Derek.N