I have heard both yes and no on going WITH exhaust and cold air intake. What is your opinion or experience with running both? I am considering MBRP for exhaust and K&N for the intake.
You already have a Cold Air Intake, and a 200% air filter.
Your current Factory exhaust manifolds are scavenging for best power in mid-RPM band.
You can change to low-RPM band manifolds for better acceleration from standing start, but do lose the mid-band power
Thats the way scavenging exhaust systems work, you have 3 choices
Low, mid and high RPMs bands, you get one
Scavenging exhaust manifolds cause a lower pressure at the exhaust valves at a specific RPM, this is done by using the Velocity of the exhaust coming out of each cylinder in a smaller pipe and dumping it into a larger pipe size.
The calculations for this are numerous, lol, but suffice it to say they are accurate and specific to each engine model.
Ford has been using scavenging exhaust manifolds since the 1960's on some engines, its FREE POWER, since the late 1970's pretty much every engine from any car maker uses scavenging exhausts.