Originally Posted by
ozziii
I have the old GX5 as well, although its one of the Godzilla modified engines from Mark at NAA, great engine, lots of power, easy to keep tuned & I would get pretty close to 10 min on a tank, probably more.
Im running the 2072 pipe as well, 25% NEO+ fuel & the O.S P4 plugs, seems to be a great combo but I wouldn't mind trying the new GO pipe, I want slightly less bottom end power & slightly more mid to top.
The new GO 2103 seems to have more mid / top performance than the 2072 from what we have seen here so far.
So, 2072 in truggy and 2103 in buggy would perhaps be a good guideline.
The Werks 2058 is also a brilliant pipe. We have run this on a couple of GO motors including the .25 6 Port, and it's a sweet match up. Slightly smoother (but still very strong) bottom end, with enhanced mid range power and definitely more top end. Improved economy on the .25 as well. More expensive than the GO pipes, but very nice.