askernie

I have a 1990 Mustang Gt Convertible...I took my friends advise and installed Mac 1 5/8 unequal length headers, underdrive pulleys, BBK X-Pipe with NO CATS, smog pump was taken off. In fender free flow air filter, Hot coil, aftermarket cap and rotor, and aftermarket cables. It still has the stock mufflers.

After installing all of this..the car has lost most of its low end torque. To back it out of the garage I have to accelerate it so it will pick up speed. If I downshift into 2nd..it gets really slow...On the highway...ITS GREAT...but this low end torque deal sucks...

I have been told everything, Install a 3:55 or 3:73 rear end to compensate...Take off the Mac 1 5/8" headers and go with 1 1/2" instead since it is a convertible and is heavier...some say...I should have never gone with the 2 1/2" X-pipe....

I DONT KNOW WHAT TO BELIEVE!!!!!!

HELP!!!

ASKERNIE
Ernie Fuentes

fordguy17

different gears should definetley help... maybe a tune up?

89LXcoupe

But that's no fun if he has to get lower gears just to make it as fast as it used to be..........

Maybe you should get the full 2.5" exhaust with after-market mufflers.

It may be getting a little choked up in the smaller exhaust and stock mufflers.

slo93aod

i always ran stock headers with stock heads. I followed the advice of a friend that tested everything he did at the track. His car went 13.20s with stock heads intake and cam...

Quik

you will lose some bottom end but it still should move with no problem. those 1 5/8 are good for that car. sound like something is wrong for it to be teh way you say it is