H - PiPe BLUES

[howude]

hello all have a question ?

i was running oem H pipe 6 cats single chamber flowmasters ran great sounded great.
i changed the H pipe to non catted kept the rest the same now sounds good at idle sounds horable raspy on take off very loud and loss of power .

i live in cali so was am trying to save my cats for 2 years till i need smog
how can i get my power back ,and what mufflers should i change to ? im guess i loss back pressure i already have 4.10 gears t-body upper plem ,trans is done but mostly i want my sound back and the crackle raspy to go away
can anyone help ? ohh and they are Mac h pips

 

[JT_66Notch+91GT]

Question

What year Mustang is this???

 

[howude]

99 mustang

 

[StangSims39]

you can always go with high flow cats, they will get rid of the rasp and give a nice deeper tone, check it out i have stock manifolds, welded in pypes high flow cats, stock H and original 40 flows, even though Cali requires the stock cats on to pass, but if you run these and replace it with stock for inspection you should be good.
YouTube - New Exhaust 04' Mustang GT