I need some insight from you folks with practical experience. My objective is to maximize efficiency and performance up to 4000 rpm; seat-of-pants feel is about as important as actual performance.
My current exhaust is a single 1.75” pipe off the stock manifold. After about 2-3 feet it steps up to 2” all the way to the stock-style muffler at the rear of the car.
I have been considering a few things:
1. Just step the first bit up to 2” to match the rest
2. Step the whole system up to 2.25”—manifold outlet is only 2” so would have to step up just after the flange
3. Split the manifold old-school style, either 4/2 or 2/2/2 and probably join the pipes into a single outlet after several feet or possibly leave separate (very curious as to what 2/2/2 would sound like out of 3 exits!!)
Which of these possibilities would work best for my objective? I’m not interested in Cliffords headers, which are the only header option I’m aware of for a car application.
My current exhaust is a single 1.75” pipe off the stock manifold. After about 2-3 feet it steps up to 2” all the way to the stock-style muffler at the rear of the car.
I have been considering a few things:
1. Just step the first bit up to 2” to match the rest
2. Step the whole system up to 2.25”—manifold outlet is only 2” so would have to step up just after the flange
3. Split the manifold old-school style, either 4/2 or 2/2/2 and probably join the pipes into a single outlet after several feet or possibly leave separate (very curious as to what 2/2/2 would sound like out of 3 exits!!)
Which of these possibilities would work best for my objective? I’m not interested in Cliffords headers, which are the only header option I’m aware of for a car application.