imo the Protec hits harder bottom to mid, the Riva not so much, but pulled harder mid-top. It was suggested for me to run a 13/17 concord and dry out the pipe more to help the bottom end, but ended up selling the ski before trying either...
My old sn ski, Robert owns it now…
Stock 701 61x w/lightened flywheel
stock milled head @ 170ish psi
stock carb w/Riva F/A
9/15 hooker
Red Riva pipe
85.4mm nozzle
Tyler’s and Jona’s old sn ski, Devin owns it now…
Stock 701 61x with lightened flywheel
Blowsion head w/165 psi
9/15 hooker
New 44 black jack with blowsion flame arrestor
carbon tech reeds
blowsion girdled head with 37 cc domes
lightweight couplers
Protec pipe
x metal waterbox
jss coils with msd plug wires
flow control valve