How much more of a performance gain do u get with a Pro-M MAF 80mm than over just putting a panel K&N filter in the stock air box???

 

that was the 1st thing i did pro-m 80 and i had a autologic chip prgrammed on the dyno then went out to the street and adjusted shift firmness i had 359 h.p. at the wheels after chip[ and pro-m i sell you the chip and pro-m for $250 the chip is a autologic and sal at psp can update it or reprogram it if the need ever arises let me know email in sig