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Thought I would let the thread run for a bit before answering all the concerns etc, you are all correct in saying the main issue with this engine is the heat the little turbo produces nwhen you ring its neck so to speak. This is whay in the past there have been many who have tried doing the upgraded hybrid and many have failed to seperate themselves from the std turbo boys.
At Dreamscience we only sign something off when it is safe, reliable, very well tested and proven to do what it says on the tin. What we have done is taken the std turbo and changed the compressor side of the turbo making it larger, effectively making it a K06 instead of a K04, we have also taken a very rough / cast turbo manifold and polished and poerted all 5 chambers as well as the inlet on the compressor section and outlet, the specification is
K04/06 hybrid turbo
35Lb/min Billet compressor wheel with extended tip technology
CNC re-profiled compressor cover
Ported compressor cover inlet
AET bespoke motorsport 6 pad thrust bearing assembly
Total seal turbine piston ring seal for low back pressure exhaust systems
Modified Seal plate to match hi-flow compressor wheel
Cut back turbine exducer blades for better flow @ high RPM ranges
Forge T2 actuator with blue spring
Forge recirc valve with yellow spring
Ported inlet manifold matched to manifold gasket
Enlarged and ported wastegate
Core assembly VSR balanced to motorsport specifications
Fully blue printed to motorsport specs
To compensate for the temperature produced whan making the 350Bhp, we have upgraded the oil cooler system, at minimum should use the RS MK2 cooler but we are about to introduce a bigger air to oil radiator cooler system. The Turbo X map has no massive boost spikes and runs a close flat torque curve and holds 21psi above 3500 rpm, below 3500 rpm the boost is a solid 16psi from 2000 rpm to 3250 rpm so the drive train is protected and the engine is not stressed. The map itself with the bigger RS 440cc multi hole injectors runs at 11.5 to 1 afr which is pretty rich for these engines and helps to add to the cooling.
The RS MK2 turbo would actually not be as good on the ST225 and could potentially prove to be less effective, we did go up against the Mountune MP350 RS MK2 and beat it to 100 mph and also a 385Bhp RS MK2 and the same result, we also recently ran an 11.6 to 100 mph and have done a few track days and had no issues at all. The RS turbo on its own would set you back the same as this entire kit with oil cooler, turbo, injectors etc and then unless you find someone who is prepared to try and calibrate it over a few months to run like a factory set up you will probably have a bit of a pig and boost spikes etc. We made this kit as an easy bolt on alternative for those who want alot more power that is proven and tested against cars of much higher power levels. With this stage 4 kit you can drive on the road every day and it will feel civilised and sensible until you hit above 3500rpm then it is an absolute animal and will match almost anything from 3500rpm in 3rd onwards. Crazy Funny
Like others have suggested just sit back and read tyhe reviews and see what all the customers we have lined up think and go from there. Thumbsup
All the best
@DS
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