onefastbird95
06-19-2007, 08:33 PM
I have a 95 Formula that I just installed a vortech s-trim supercharger on. Its going to make around 6-7 psi the pulley that is on it now. The only thing I have done to my exhause is a Borla Cat back. I am wondering if headers and Y pipe will bennefit me much with the supercharger or not? If so shoudl I be looking at long tubes, mids, delete the cats all together? I live in Ohio and they have emissions testing but I was told that it was going to be banned next year. Any help advice would be great! thanks -Matt
95 badbird
06-19-2007, 08:55 PM
Long tubes with the matching y-pipe will definitely give you better gains than the OEM crap. Deleting the cats is up to you. You will see a few HP gain in doing so. But if you have emissions testing then staying with cats may be your best bet.
onefastbird95
06-19-2007, 09:02 PM
I heard they sell high flow cats... will those still pass the emissions and will they work on long tube headers or would I have to go with different headers and would it be worth it if I went that route?
2000GTP
06-19-2007, 09:30 PM
I heard they sell high flow cats... will those still pass the emissions and will they work on long tube headers or would I have to go with different headers and would it be worth it if I went that route?
Headers will definitely help with a forced induction motor. You can install high flow cats in the off-road y-pipe, you would probably need a smaller length cat though in order to get it to clear the fuel/brake lines.
onefastbird95
06-19-2007, 09:38 PM
Will the longtubes work with an off road Y plus Hight flow cats? I know they have "mids" but I never understoud the point of getting them over a long tube... also what brand do most people go with on the LT1 and I believe they sell them with or without the hook up... I believe its an egr hook up... hopefully someone chimes in and corrects me.
2000GTP
06-20-2007, 05:02 PM
Will the longtubes work with an off road Y plus Hight flow cats? I know they have "mids" but I never understoud the point of getting them over a long tube... also what brand do most people go with on the LT1 and I believe they sell them with or without the hook up... I believe its an egr hook up... hopefully someone chimes in and corrects me.
Yes, just have a shop custom weld the cats into the y-pipe, that is what I did. Also, there are two types of long tubes, the "race" style and the "emissions" style. The emissions style is the one with the EGR and AIR hookups.
mzgp5x
06-22-2007, 10:00 AM
My 97ss 383 was converted to D1. I had to change all of my exhaust. Still use the slp short manifold with a Random 2 1/2" Y with 2 bullit cats. Flows well. Then, went with a Mufflex 3 1/2 and Spintech. Excessive backpressure due to the muffler not being straight-thru design. Converted the 3 1/2 pipe with a qtp electric dump. Really helped alot.
TheOutlaw 2007
06-22-2007, 01:08 PM
I have a 95 Formula that I just installed a vortech s-trim supercharger on. Its going to make around 6-7 psi the pulley that is on it now. The only thing I have done to my exhause is a Borla Cat back. I am wondering if headers and Y pipe will bennefit me much with the supercharger or not? If so shoudl I be looking at long tubes, mids, delete the cats all together? I live in Ohio and they have emissions testing but I was told that it was going to be banned next year. Any help advice would be great! thanks -Matt
jet hot or kooks Headers, 3in off road pipe and 3inch high-flo cats with test pipes would help. For best results I would think about true duals