need help with tuning my box

[babsuhl81 10+ year member]

how long of a 4" port?

 

[nvturbo 10+ year member]

This should help you out. You can get some "PRECISION PORT TUBES" from Parts Express.com. That's where I bought mine from.

** PORT CALCULATOR link **

 

[babsuhl81 10+ year member]

Thanks a lot. That helps a ton

 

[babsuhl81 10+ year member]

I think I'm gonna try a square port. A friend has a 15 inch mofo with square port and it sounds pretty good. I wanna do something different than round or slot

 

[nvturbo 10+ year member]

Flared tube port = no port noise

but it's up to you.