i think i had either 12.9, or 12.3 on a 13x4 not W
however, right now i'm getting nowt lol

Alan told me no West should be on a throttle pipe, all Wests are on Mini pipes, and if you ask for a pipe make sure you say its a West if thats gonna be it's home, or you'll get a throttle pipe by accident. -2K was what he told me if you put it on a throttle. So my Capiche pipe is a mini pipe, not a throttle pipe... i guess...

my West 36 is currently on a Leo muffler and WONT! run on a 11x4 master, although weirdly a APC 10x4 and MAster 11x4 give the same RPM, 13.6k. it needs the pipe for the extra power. then it'll turn a APC 11x4! right now the 11x4 master makes it cut when going from half, to full throttle, lack of fuel pressure. so for now a APC 10x4 is living there


so Malc... is the extra cost, and extra cost per gallon for that extra 15%, worth a tiny 900rpm?