How Much More Power Will A 3-Inch Exhaust Give Compared To 2.5-Inch?
We all know a wider, less restrictive exhaust should give more power, but how much difference does the jump from 2.5 to three inches give? The Engine Masters guys from Motor Trend performed some tests to find out
Growing up on a diet of World Rally Championship highlights and lengthy Gran Turismo 2 sessions, a life in cars was as good as inevitable for Matt.
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Lets be fair, we’d be happy with 600hp…
Watched this last night. Love the stuff over at motor trend (mainly Roadkill, Hot Rod Garage and Engine Masters) and it was interesting to see that the differences your talking are only a few %…..
Euro people be like a carb , what is that?
Nice and very informative video! Do you guys think this makes a difference on a 200BHP 2litre 4 cilinder N/A engine? It will obviously will be less of a difference or would it be no difference at all when you’re under a certain amount of horsepower?
Interesting for V8, but we can’t use this test to say that on any engine there are on earth, the 2.5 will be worst than the 3. Back pressure is really important, for some engines it provides more power at low-mid rpm than 3” exhausts. The 3” will always perform better at high rpm, it’s a fact, but depending on the way you use your car the 2.5 will be better. For me, i stayed in 2.5 to have quick boost, because i usually use my car on tiny curvy road and gravel/dirty ways. 3” would be very bad in my case.
I want that on my Honda😎
Also remember, this a 600 hp motor, not a 4 cyl making 200. 3 inch might not always be the better option.
Yeah, cuz we skipped from steam engines and went straigth to electronic fuel injection, bypassing carburators… :-|
you need to mach the exhaust to your engine,a massive 3 inch exhaust won’t do anything ona 1.1L 4 cylinder Peugeot like mine, however i think it wouldn’t be as bad on my 3.0L V6 Ford Capri
That laugh when he walks away after making car sounds in the muffler