Hi.

I used my Hong Nor 2047 (2-chamber) pipe for the break-in and some normal practise. I thought that pipe worked great on the engine... Until I tried my Novarossi 9901 pipe! GOD DAMN, that pipe put some power in the engine!!!! Much more power, more than a minute longer runtime on a tank of fuel, and even easier to adjust!!! I had to LEAN the HSN 1/3 of a turn to get her run just clean on the straight. I didn't want to compare this engine with my Novarossi plus engines... But they are damn close...!!!!!

This engine is compareble with much expenciver engines with just a little shorter runtime - just choise the right pipe . I run O'Donnell 77T plug, 20% nitro, stock shim an a NOSRAM (long and ]-shaped) header. Next year I'll try the Novarossi 41021 header (shorter header and )-shaped).

Honestly, thats a REALLY great engine!!!!


Anyone wants to try a new engine???? Buy a HPI!!!