My Old System was Coupler-X Pipe-Cut Outs-Real Dual Flowmaster Super 40's.
New System is Couplers-Cut Outs-X Pipe-Real Dual Flowmaster Super 44's.
This, the old system, added about 19 RWHP.
The New System has added 2 to 3 MPG Open Cut-Outs, compared to Closed Cut-Outs.
Takes about a Grand to do the whole system.
Pictures:
