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Mark does the mapping . On his dyno and then on the road for a tweak. done several of my cars up to 575 bhp and also the crossroads time attack car . he also does all the rebuilds himself . TOP bloke .
he has done all the engine work on my current sti and my previous subarus, not come across a more helpful chap in all my days and what he doesn't know isn't worth knowing. just to add my two penneth.
As stated above Mark does all the mapping and engine building, He has mapped all my cars with great results and never missed a beat. He also built my current 2.35 motor.
Hes a very honest and genuine guy and thats becoming rare in this industry
Drop him a quick call Dave and let him know what you want doing, they are very competitively priced. Do you have the relevant dongle to access your ecu ?