WHAT WE NEED is:
two cars same year and same mods excepet
one with JCW and one with MTH ECU.
then dyno the cars then will knew whats up!

from all the DYNO days that i have been too,
i have had the chance to see cars dynoed with the full JCW kit and the
HP. has not been that great.@ 169 to 175 max HP on the DYNO.
but if you have your owen basic mods ( intake , exhaust, pully) and JCW ECU i have seen much better numbers @ 176 to 180 max sofar.

but all the cars have not been simaler in mods or years.

do not for get a stock S is @ 139 to 141 HP on the dyno.
Thanks to every one.

 

No, what you need is a stock MCS on the dyno and then the SAME MCS with the upgrades and the tuner files.

There are too many variables that can cause different results with a dyno on two seperate cars.

FYI, you don't do a tuner file for HP, you do it to adjust the computer to what the car has in it. Hardware gets you HP, tuner lets to take full advantage of it.