Originally Posted by LSVTIEG

Oh & your tune sounds a little off. Like you are running lean. I always start with the lsn once its up to temp & do a pinch test for a base setting. When you pinch the fuel line(close to the carb) it should stay running for 3-4 seconds before dieing. Any sooner & its too lean,any later & its rich. once you have a base setting on the lsn move on to the hsn. start with a stock setting of the colar even with the line & start leaning it out with small turns, about 1/12 at at a time until you don't see any more performance gains. Always make sure that you have smoke coming out the pipe.& try not to let temps get over 250- 260. If you don't have a temp gun, get one. Everyone has their own way of tuning, this is just how I do mine. Once you have the hsn set you can go back to the lsn if you want. when your lsn is set after a wot run bring it back & check it with the temp gun. Your temp should drop a degree every few seconds. Hope this helps if you don't already know how to tune.