V8 Exhaust

[Sox]

Originally Posted by GR8WITE

Got no drone out of my 2.5" twin, I put a twin 2.5" on thinking of the future mods I will do so I don't have to replace the exhaust twice because decent twin setups from extractors back cost a lot of $$$$

Your're lucky, many dual 2.5" systems drone to buggery.
Dual 2.25" pipes actually flow over 900cfm.
Considering a 70mm T/B flows approx 700cfm, the dual 2.25 pipes are actually way over the ~75% intake to exhaust ratio required for good performance.

A 5L even revving to 8000rpm only requires 700cfm of intake, and that's based on 100%VE.

In other words, a dual 2.25 system is more than capable of providing a restriction free exhaust for any N/A street car.

The muffler quality is far far more important in an exhaust system.