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Hi there . I am new to this forum but i am reading the post " Embrace The Ew! " for quite some time. I actually have 206 GTi with still stock EW10J4 . For it i have already prepared : 2.2 (EW12J4) Inlet (here in Bulgaria it's difficult to find RC ), bigger 63 mm TB . I am thinking to polish e it inside this sunday What do you think about that ? New engine management ( Megasquirt 2 Last hardware version Upgraded with military grade elements from me and one friend), bigger 440cc injectors , Garrett T2860 . I have also upgraded the gearbox rear tampon and braket At the moment ( Hope to start in about a week stil waiting some bits to come ) i'll be installing the inlet, new 250cc injectors ,TB , Engine management ,Wideband controller gauge ( innovate ) , Oil pressue gauge , still waiting for boost meter to arrive . Wideband will be connected to management so i can have active AFR control. I want to ask if someone knows the size of the burning chamber? So far i know if i am right that head holds 40cc i don't know if pistons come flat with the block or they have some offset. I want to calculate the exact thickness of the head gasket according to the boost pressure i am going to apply (About 0.5-0.6) . As for now i'll be running stock internals and in that line of thoughts they should hold 250 HP am i right ? I'll set my boost control so that i get boost later so i keep the rods safe . Next i'm planing on Wiseco pistons and rods and replacing the differential or reinforcing it with ARP bolts. After that the plan is to get more boost P.S. Car has suspension and brake modes already now is only time for POWER I'll be very happy for your help After all i want to create a little guide for the people in Bulgaria . In Bulgaria we have only one tuned 206 GTi an it is used for Rallying only ( pulls 460 HP with fuel additives, it's driven at 350. There is a 4x4 project starting now )