not a big fan of hauling ass on public roads but hell ive done it plenty....130ish on the test drive when i bought the mach1, been about 130-135mph in all my civics..fastest i have ever been was in berta's turbo gsr...tached out in 5th gear maybe 150ish??? we did that in a 45mph speed zone it was rad. back in 04 or so i was following the same turbo gsr from silver dollar raceway and he raced an 03 cobra and a fox body...i was doing 120-130 in a 88 mazda 323 gt (turbo car) somehow i got infront of the fox but the 03 was too much for me and berta was steadily pulling on all of us...good times!