I purchased a 2007 Ford F-150 and love it. The next day I noticed what seemed to be a miss while pulling a trailer. I spoke with the owner, Ashgar who... said he would fix it. That same day he had the spark plugs replaced and egr valve cleaned on my 5.4 V8. He stood behind his vehicle and fixed what was wrong. He even bought me pizza while I waited! Highly recommended. Thanks.