I think I'm going to get an Allen supercharger, 6 psi kit for cheap and it's new. What would my HP numbers look like with the mods listed below? Thanks in advance.
BBK long tube headers
BBK hi flow h-pipe
Steeda catback
Nice kit....you'll like it. Good looking, well engineered, nice fit and finish, simple (yet involved) install, great power and stone reliable. Regardless of a lot of the negative press you’ve heard about "heat" production when it comes to Eaton Superchargers, they run just fine when kept within their efficiency range and you'll be hard pressed to find another blower that’s will match it’s bang for the buck performance and durability. Not to mention I can’t think of any company being more pleasant to deal. Scott and Leslie are great to deal with and will bend over backwards to make sure your needs are met…..which is certainly more than I can say for some of the other well known companies that manufacture their own Positive Displacement blower kits.
If your goals are to build a fast and reliable positive displacement blown street car, within plenty of bottom end torque and horsepower in the 300-400rwhp range, the AED is a great candidate and at this level will run head to head (and in some cases even a little better) with any of the similar displacement twin screws on the market. If moving beyond 400rwhp later on down the road is what you’ve got in mind, then this is where the M90S used in the Allen Kit has pretty much outlived it’s usefulness and you may want to consider looking into a kit that utilizes a screw compressors like a one of the Saleen, Kenne Bell or even Allens own Race Kit.