Hi all,

I have a historic Formula First single seater that is currently powered by a dry sumped 1.6 cvh putting out 113hp (dyno'd)

Anyhoo, i am upgrading to rs turbo power but my knowledge of tuning is in other marques and tbh, i am a bit lost with what to do to get the most reliable power from the RST engine. so hopefully you will be able to point me in the right direction.

The engine block i am going with is a fully built forged jobby with a nice cam/verniers CNC'd head etc so that is up to the job. it comes with an efi intake, and that is it.

What turbo should i go for? - i am assuming the best power/psi is from a modern GT series ball bearing turbo like a GT25 hung off a tubular manifold, what are the flow characteristics of the engine like, will a bigger turbo just take forever to boost.

Most importantly, what are my options with regard to engine management, as mentioned earlier, i will have the efi intake manifold, what is the usual route to tuning these engines and most importantly, what is reliable, i just want to fit and forget (within reason) does the standard ecu have the 'definition' and fine control necessary to run the engine safely, or should i go aftermarket (and if so, what) i would like a safe 220-250hp, i will be fitting my existing dry sump oil system to the car, does the rst have greater oil needs than the n/a engine or are they identical?

Any links/info you could give me would be greatly appreciated, if you are interested, below are a couple of pics of the car, if there is anything specific you would like me to snap, feel free to ask

Greg