HP gains on the ralliart

how much hp do you think ill gain..(whp) with the rpm exhaust, cold air, and downpipe?

maybe 10 at the wheels if you're lucky

how much hp do you think ill gain..(whp) with the rpm exhaust, cold air, and downpipe?

Down pipe in the Ralliart?

Or do you mean header? Unless you've install a turbo on your Ralliart.

I think getting +10 whp is very doable. Just don't go too big on your intake plumbing. And stick with 100% stainless exhuasts or you'd be replacing it every 2-3 years.

I'm still N/A..road race motorsports says it's a downpipe:
ROAD/RACE Race Series Downpipe

This downpipe is the single best bolt on for your Mivec engine. Fits both 5 speed and automatic transmissions. It's 2 into 1 design is a direct bolt on and serves as downpipe and cat eliminator in one. It is ceramic coated to minimize heat and corrosion and uses stainless steel flex section. 2.25 inch diameter is tuned for balanced torque and top end horspower. Expect 10 h.p. from this downpipe alone. May cause "CEL." Regardless this is a must for N/A guys.

I am getting everything from road race motorsports. I have the exhaust already, I am ordering the downpipe and cold air next week

you should get about 15hp gain atleast from all three items together