Originally Posted by sptrtrucker

I bought this new sirio c7b .21 engine to go in my new buggy and put the turbo head on and I fired it up for the first time last nite and was really hard to get any kind of tune. It's mostly on the low end and the engine came with a extra idle screw am I suppose to change that with the turbo head?that's the plan for tonight. The high needle came 6 turns out and I started it 3 out and then ran up to 190 then started turning out to cool it and didnt bog down till 7 or so out then once it cooled turned in turn or 2 and ran up 200 did this for 2 tanks then nite time and plan on running some fuel though tonight, the problem is with the low end and plan on switching the needle and try that is that it?