[svt cobra 01]

just put ford raceing shorty headers on my 2001 cobra,now the car wont trun past 5200 rpm and then feels like i hit the rev limter,or the car feels like it bogs out.before the car would turn 6800 no problem.the car has been tuned with a programmer,cold air intake,and x pipe.the shorty headers dont look as big as the stock ones i took off.any ideas thanks

[redrocket93]

any pics sounds like not letting out enough exhaust