The car has everything new and still runs like crap

[Hector Hernandez]

I just did o2 sensor and mass air meter the right way ran perfect for a couple of days insane crazy now back to stuttering when pined wth the car has more than enought to run 10 second pass and was planning to put on 6466 but not even runs right again need some help or just going to take it to some one that can look it over for me I should of stood with the turbo carb mustang I had what Spain this Gn is

 

[Phoneguy]

Do you have logs or Scanmaster numbers to post so someone can help you out??? These cars are a finicky breed but when they run right they are a blast and get serious looks from passers by

Bryan

 

[TLIMITED]

What is it doing and what have you replaced and also what Phoneguy said.

 

[Hector Hernandez]

Ran good for a while then the same crap step on it hesitates then like stutters then takes of I spoke to Eric turbo Tweek the numbers on the scanmaster are good 800 on the 02 and lb 28 the air fuel is 6 at idle and goes up as I floor it fuel pleasure 43 at idle goes up to when step on it oil pleasure is good and water temp 190 cause the big intercoer don't know what's wrong can't figure this car out

 

[psycho6cyl]

What kind of maf? Coil pack and or module been replaced?

 

[Hector Hernandez]

Mas 3.5 ls1 brand new coil no old one

 

[Boostdeznuts]

Bring it by me and we can swap out parts till you get it running good again