OK so i got my flexpipe changed my Jimmy a few weeks ago and we had a little disagreement and misunderstanding so it made me believe that my flexpipe was not properly installed so he told me to come back... its making a weird noise and my friend who has a shop said it sounds like the flexpipe or a exhaust leak but today when i went to put it into 1ST gear i didnt fully throw it into gear and it made the noise lowder than when im driving and sounded like a wheel spinning and then slowing down as the revvs died down , that could just be the grinding of the gears but it sounded almost identical to the sound im experiencing when im driving as it only makes the sound when i am driving and at higher rpms, never when i just revv. so im wondering, could this be the tranny? flywheel? it couldnt be my clutch because i had an Exedy Clutch put in last November and my gears are still smooth and clean... im so ****ing confused and dont want to point fingers or assume its the flywheel too soon, anyone experience this or possibly know what could be my 3's issue?