i think if you have done little to no mods on your car it would be a wast of money and time,plus you engine response will be down , if you running say 400 + hp then give it a go with a 90mm q45
a mate went hear and got it done for $100
http://www.racetech.com.au/main.htm
even hurricane exhaust does it too again a mate took his 33 there for the exhaust manifold done.
it was a good day 414hp out of my donkey so i was happy to see that on a different dyno.
a few friendly people so it was good to see.
good job sarkis.
by the way did i win the intercooler .
lol
what i have noticed from the change engine is quieter ,oil temp down, oil presser down ,and after a dyno day today castrol made 304kw & R/P 309kw so i don't think that's to bad but i will try a 15/50 next.
my engine has done 15k on 10/60 so ill give it a go the engine sounds quieter now with 10/40.. i change oil every 4k so ill see .
thanks for the input guys nice to see friendlier comments this time .