X pipe H pipe or side by side

Oldmanmopar said
H pipe is more power and less money then a X pipe. below is a dyno sheet from someone that doesn't sell X pipes. Those who have them will never admit they waisted their money.

Think of it this way Have two hoppers hook up to an X. Flush them both at the same time and the **** will slam into each other.

Most will tell you the pulsation from side to side helps flow. Old school mopar firing order is 1, / 8,4, / 3, / 6,/ 5,7, / 2 this is the pulse not so effective is it.

H-PIPE all the way for old school mopar V-8's.

Where is the dyno sheet with a quality header and correctly sized exhaust and correctly chosen cam?

I can look at those two dyno pulls and tell you for a FACT there is less than .005 in the time slips between the two systems.

I'd bet you what you want if I spec'd the cam and exhaust, the H and X pipe would show SIGNIFICANT losses. They always do when things are correct.

Unless you are running a restrictor plate engine at 8000 RPM. Or you can flat foot it around Daytona or Talladega.