New true dual setup

[mtuggle86]

A few weeks ago I found out my exhaust had a piece of the stock I-pipe which is 2.75 inchs. I was wondering is this was a major restriction on my car? It was before my the cut-out in my exhaust.

According to some things Ive read If my engine is around 440bhp Ill need around 968cfm of exhaust flow. 440X2.2CFM=968CFM
Also according to what Ive read a 2.75 inch pipe has 5.937sq Inchs of area. For every Sq inch a pipe will flow 115cfm so at that rate my exhaust can only flow 5.937x115=682CFM

So if that if its right my exhaust seems very restrictive. What kind of loses has this been giving me? I just ordered a TSP True dual exhaust kit with moroso spiral flow mufflers I wondering what I should Pickup by switching?

[nascarnate326]

IDK about all that math, but I would guess you would pick up 5 hp. It will sound like 20 hp more though.

[mtuggle86]

IDK about all that math, but I would guess you would pick up 5 hp. It will sound like 20 hp more though.

Well I got the math info for the math on one of the ls1tech exhuast stickies. So as long as its right im hoping to get some healthy gains from the true duals.