Newbie Exhaust Question, Please Help

[2fst4you]

I have a bone stock 85 SVO and my question is i would like to get a lil bit more power out of her without changing major parts. Im thinking of just doing an K&N Air Filter and an exhaust system and maybe a tune if needed. Will the complete 3' single turbo back kit or the 3' kit with duel 2.5' kit make me lose any horsepower or torque because i don't other components to get full benefit from that kind of exhaust kit. Will i gain HP through the RPM range or just up top? How much HP gain estimated? Thanks!

[Stinger]

You'll gain at all points in the rpm range. The filter will be worth about 13hp, the exhaust will be worth around 40hp. I'd suggest a manual boost controller as well. We sell all three items.