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Firstly, why the ECU?
I assume that is to get round the 112mph limit. UK cars have a slightly altered ECU mapped for 155mph and lower octane fuel.
Why change the pullies and add a boost controller. It seems standard practice to upgrade them when changing the cams, but replacing them for no reason seems unnecessary expense. If the turbo's are running at the accepted limit of 1 bar (or is it .9 bar), why would I wish control the boost.
Lastly, I havent seen much mention adding of electric fans. Surely if cooling is on the list an HKS intercooler is a very cheap way around this problem (about 850gbp). I am informed that it is not unreasonable to expect about 25bhp increase because of the great inefficiencies of the standard unit. The drop in charge temperature also allows the boost to be increased by a tiny amount. Does heat affect your performance noteably in your warmish climate?
Staying within the tolerance of the components, what you have suggested should give about 360-380bhp. It is that last 20-40bhp that I am after to get it upto 400ish (But i dont want to go down the route of steel turbos)
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