4AGE engine tuning discussion

[NoHachi]

[Putting on Mux flamesuit..just answering his question buddy :-)]

You are absolutely right Morten..about the boost vs vacuum part. So you could add one tenth of a bar to the calculation.. The loss of 15% can usually be attributed due to the greater resistance of the turbo decreasing VE, higher head and inlet tract temperatures and general poor tuning seen in ghetto setups.
On a setup with a nice equal length tubular header and matching full open exhaust, decently sized intercooler, efficient BB turbo and effective motor management that loss might drop to 0%. But such a setup will cost you 2000E minimum (given new bought parts, off course you can haggle and shop for bargains).
So that would make my most positive estimate for a 4AGE at 0.5bar boost around 180hp. Lets wait and see what numbers Jamie comes up with at the dyno.

On topic: Robo: don't forget about machining costs for performing an overbore and hone..(unless you have someone who can do that for free, in which case you are to contact me immediately ;-) )