how much horsepower???
 

i will soon be adding a modifiyed pacesetter headder from rabid chimp, a magniflow high flow catalitic converter, upgrading the exhaust tubing from 2' to 2.5",and adding a mangaflow straight through twin tip muffler, to my 1985 supra, how much horsepower do you think i will gain, the only thing ive done to my car so far is put a cold air intake on it.

you should be looking at maybe 8-12 whp if you have a good 5mge to start with. did it run good b 4 you did the intake ( by the way its just a short ram intake). if you havent done a tune up like plugs, wires, dis. ect then your not going to help it as much. those mods work good together. good luck with the car.