A car that has 450 - 500 RwHp that traps 121 has to weight about 3400 lbs...... SO unless ur 240 gained about 500 lbs the Hp #'s on ur run are way wrong .....
UR car trapped 121. Plug in the weight of 3400 lbs (Just to prove a point). Then we can say u have 475 HP...U honestly have about 390ish HP. That would make ur Hp calculation correct.
On ur old set up.....587 RWHPIn all REALness we'll say that ur car weighs 2900 lbsSo with that weight and Ur HP of 587 Plug in the Number of 137.5 as ur MPH (Mile Per Hour) ur have a138 mph car....
USE THE LINK TO DO THE MATH...Physics does NOT lie, regardless of other vairables #'s are pretty accurate
I saw the dyno graph on ur turbo the PT...
http://www.3dstreetracing.com/
USE THE >>> (Horsepower From MPH Calculation:)
Do the Math....Plug in the #'s
Current set up
****............FAST as FU*K
In all realness though that car is SICK!!!