how much hp would i gain in a 4.6 V8 from installing the high-flow k&n conical filter?<br> how much hp from a regular, stock fitting k&n filter?<br> finnally, how much hp comes from installing the cone filter with a larger MAF? (80mm, 90mm)

A K&N cone will get you about 6-8 hp, a K&N panel will get you 3-5hp. If you install a maf, you MUST get a chip. The maf is a sensor and you will need a chip that is programmed to understand the information that sensor is sending. Without a chip, a different maf will will make your car run worse, not better. The combination of a maf and chip will get you 5-10 hp, but that isn't an accurate measure of the benefit you get. The chip will advance the timing, change the transmission shift points and lots of other things that don't affect horsepower but do affect performance. You will notice a very substantial difference.<br><br>Kenny