vinny mate you where sort of right mate
are we ready
X25XE:short stroke block revs faster (slightly)
better valves in cylinder head breathes better
omega's and vectra's some calibra's
but the calibras used older C25xe heads so what gains where made from the faster revving block where lost
and because vauxhall decided to be more stringent with tolerances engines power output on x25xe were more in line with official vx figures
C25XE long stroke engine so its a little lazy
cylinder heads and breathing ar restricted, so they said
and officiall power out puts are all over the joint from engine to engine
but never lower so as vinny said 170bhp to 190bhp on a standard engine,
no one can answer why this is but it is a well reported fact that the older engines output can vary
with msd saying that they never played with the ecu is just a big lie, as Vauxhall commisioned msd to build a race series using the vectra, this included reprogramming ecu's all the information from MSD's test mule where given back to vauxhall and vauxhall changed the codes before shipping the batch of road going vectras out to msd.
vauxhall also done this for the police vectras so all the police forces say that theyre cars were standard ecu settings, yes the police didnt change them but it was done before delivery from the factory, but the general public couldnt go and buy a vectra with the same fuelling maps as the police ones
