Found gauge problem bad ground connection at battery. With only 100,000 miles on the car do you think the tb would really be that dirty? The loss of throttle responce is definitely related to heat but we havnt had weather hottter then 75*. Does heat reduce boost?? Does someone know an article to help me understand what might be going on. I have also relocated the I at to where my intake sucks in air rather then at maf. Would this be incorrect? Having tranny flushed on the 3rd can a transmission cause problems like this with original tran fld?