The NA debate is over. bigger exhaust = more power
#32
12-09-2010, 11:08 AM
OK, now I'm confused by your argument. You're saying you have a 3" dual system, right? You do realize that SGM's system is a 3.5" single, right? The area of that exhaust is 9.6". The area of a dual 2.5" exhaust is 9.9". That means SGM saw better numbers with a smaller exhaust than what most people run (ie aftermarket dual 2.5" systems). So that would mean your dual 3" system is probably making less power than the typical dual 2.5" system. Bigger isn't better.
I've said this for years, many of the best NA exhaust systems use a slightly stepped design in that the exhaust is slightly larger upstream and gets fractionally smaller towards the exit. This keeps the exhaust hot and the velocity high. SGM obviously saw benefit to what I'm saying.
I've said this for years, many of the best NA exhaust systems use a slightly stepped design in that the exhaust is slightly larger upstream and gets fractionally smaller towards the exit. This keeps the exhaust hot and the velocity high. SGM obviously saw benefit to what I'm saying.
#33
12-09-2010, 04:32 PM
Did they actually test the backpressure or are you just assuming this because the 2.5" dual system made less power. Just because less power was made with the 2.5" system, doesn't mean backpressure was the culprit. Exhaust velocity is key and there are so elements that go into that, backpressure being just one of them.
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