Went back to the OS1040 pipe, engine performing well. Not as fast on the backstraight as the Red Dots and Nova's but makes up for it on the slower infield sections. Have ordered the newer OS1050 pipe, hope to get it this week.
Had increased the Nitro from 20% to 25% but at the end of the heat engine was idling very high unlike when I was using 20%. Any ideas, maybe it was too lean and got too hot?