look my car is idling at 1000 rpm and lowers to 800rpm and then its shaking and also when you drive it it dont want to run the only way it runs is if you step on the gas and the boost licks in and still the boost dont hit right either its backfiring alot now and just to remind you this is a new engine whats going on please need help

 

i put it in timing and my coils are good they have spark i was thinking its have problems with the compresstion please i need help someone tell me what i have to check or what i have to do

 

Vacuum leak?

I'm guessing here because I could only understand about 50% of what you wrote. Sentences are a good thing.

If you think it's compression, do a poor man's compression test:
http://www.aaroncake.net/rx-7/blown.htm

 

If it is your engine going bad... (I dont know that) would you consider sellig it? Would pay TOP dollar for a good body :-)
573 979 3111 my cell call 24/7

Hope it is nothing big.

 

too rich !

 

1- Idle is normal
2- If you have oem motor mounts they are prbly broke
3- Your afm could be stuck, or broke

 

yea well i got a compresstion check is gone bro no good i am getting a new engine in 2 weeks i got warrenty by the dealer so when i install it i might sell it