I have tried a jp-1 pipe and a 053 with a short header and a long header and a sportworks ht pipe. I reset the needles again and at 5 turns out on the LSN and 3.5 on the HSN it allmost wont move . Thats after leaning the hsn down about two and a half turns so does clear out after a bout 30' to 40' and the temp was at 200 to 215. I then tried to lean the LSN, If i was at 2.5 or 2.25 out it would clear pretty good as long as i didnt not make high speed pass down the strait ( 50' to 60' ). The hotter the engine gets the worse the bottom end gets till will not even idle now.