who said that i knwo the difference i was asking about which the dyno sheet was measured in not what it was.

 

"For every 100HP, you can expect ~1 sec. reduction in you quarter mile time. So if you get 80HP to the wheels, you'll drop ~0.8 sec. Of course, if you drive like a retard, you'll won't gain this. AWD cars are always slower due to driveline loss as stated above. Forget about quarter mile times, take it to an autocross event and measure performance that way."

This is way no off, not sure where you came up with it. Ecus upgrades alone drop 1/4 times by 1sec to 1.5sec. (i.e. 50hp gain.)

 

The idfference in quarter mile time v horsepower will vary, not the least because it is dependent on what you start with.

Adding 50Hp to a 500 HP car is only a 10% increase in HP, and isn't going to affect your time much. Adding 50Hp to a 50 HP car will shave minutes off your time

 

can u upgrade the boostof the pes s/c? How easy or hard is it? Could i do it right befor ei'm gonna race then change it back for the evryday stuff?

 

i doubt u can do that