I have hit 145 on my speedo too But I know that the Speedometer isn't as accurate a reading though. I did 140+ on the speedo twice actually. Same highway But the 2nd time was a top speed challenge with my Friends old z32 na before he bought the TT. He prolly blew a few Seals tho because he said it seemed like fuel cut suddenly kicked in haha. but It was still pulling and I felt pretty comfortable because the car didn't have any pull off to the sides either. And that was with Little/No Mods aside from High maintenance and seal, clutch, filter replacements. i don't think its possible for it to actually hit those numbers But I was feaking out seeing my Needle almost all the way near 140. :biglaugh: