what about a turbo diesel car? like a bmw 320d, after decat, if i remove all the muffelrs and mid box will the power be better ?
To explain, cutting off your exhaust at the headers won’t really make your car faster, Honda drivers and high schoolers take note
NA cars do need some of it. Back pressure gives some torque to these engines, while reducing top HP a bit. If it’s a turbo, then throw it all out. Bigger and ‘straighter’ pipes give the most effect to those. Turbo creates backpressure. Pipe diameter is subject to diminishing returns. We stopped at 3 inches for our project.
For carbureted cars it does matter, otherwise the cylinder will not fill with air.
Depends on the application. Your average 4pot NA needs some. Just take a look at the MCM Exhaust Myth Busted video for reference. Pink was stock, blue was a straight pipe with a potato in the exhaust
is there a site or program to work out the correct system for my car?
O
No. You do need some things that result in you running with some backpressure though, like pulse tuning and high enough velocity to scavenge with.
Comments
Do I?
Only if I need a back massage
what about a turbo diesel car? like a bmw 320d, after decat, if i remove all the muffelrs and mid box will the power be better ?
To explain, cutting off your exhaust at the headers won’t really make your car faster, Honda drivers and high schoolers take note
NA cars do need some of it. Back pressure gives some torque to these engines, while reducing top HP a bit.
If it’s a turbo, then throw it all out. Bigger and ‘straighter’ pipes give the most effect to those. Turbo creates backpressure. Pipe diameter is subject to diminishing returns. We stopped at 3 inches for our project.
For carbureted cars it does matter, otherwise the cylinder will not fill with air.
Depends on the application. Your average 4pot NA needs some. Just take a look at the MCM Exhaust Myth Busted video for reference. Pink was stock, blue was a straight pipe with a potato in the exhaust
is there a site or program to work out the correct system for my car?
O
No.
You do need some things that result in you running with some backpressure though, like pulse tuning and high enough velocity to scavenge with.