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Message: <blockquote data-quote="1JZtezza" data-source="post: 3899240" data-attributes="member: 66560">Lost me here,problem is the ECU or piston?Frankly I dont know much about Weslee racing pistons.Are they 2 ring or 3 ring(piston rings).2 ring ones are the racing pistons.They dont last and there is a lot of oil lost through 'blow-by'.Unless you wanna do rebuild say every 1000km or so.Mahle pistons got good reputation but dunno if you could get them or what the cost.Correct me if I am wrong.BT supposedly 'non interference' engine.But you are using 288 Toda cams with 9.+ mm lift.To be safe you may need slightly thicker head gasket to make sure valves dont kiss piston.get your shimming and cam set with engine out of the car.Then you can handturn the crank to make sure the valves dont kiss.Also test when vvt kicks in ie advance the cam to simulate 35 degree BTDC.This the tricky part:standard cam peak is 120 degree ATDC(inlet).Check your spec sheet for Toda cam where the peak is.Could be between 105degree ATDC to 120 degree ATDC.Let us say its 120 degree ATDC; so below 4400rpm its suppose to open 24degree BTDC which implies when vvt kicks in it becomes advanced another 30degree ie 54 degree BTDC.Personally I have a distrust of adjustable cam pulleys although others have success in them.Prefer the old TRD 16 valve pulleys which means sacrificing the VVT.However the BT head has better flow than the 16valve.Any other sifu with any experience; VVT and high cam???Cheers and good luck.</blockquote>

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