Valve springs + K20 intake manifold

[aaronng]

The Icebox has improved the mid end and even the top end a bit with minimal increase in noise.Cost me approx.$260 shipped,good value.I'm still running the stock top piece of the intake with a K&N filter(thanks euroo3act).Not sure what difference in power the top piece will make when i install it. Id be interested to compare another 06-07 manual with mine,as Aaron said mine seems to go hard for a basically stock engine.

I changed my engine oil after we last met up and it was a big improvement. The oil I had in the engine had seen a track day. When I drained it out, it was black and a little gunky. Even with the improvement, my car still doesn't have that mid-range lump of torque that your car does.

[tony1234]

I changed my engine oil after we last met up and it was a big improvement. The oil I had in the engine had seen a track day. When I drained it out, it was black and a little gunky. Even with the improvement, my car still doesn't have that mid-range lump of torque that your car does.

Good to hear.Is there anyone here that can confirm if there was any change to ECU mapping or whatever between an 04-05 to 06-07?from what i know there was no changes(apart from strengthened rods and crank)to the engine from 06 onwards.