just bought a rica 304 of john850t5r, ( many thanks nice deal ), all fitted and seems to drive nice.
how do your rica'd 850s deliver the power ?
mine seems slower in 1st and 2nd than when i had my mbc fitted but cleaner, quicker and without boost cut in the higher gears.
i think i have a small air leak as its holding around 14psi and the needle fluctuates as the power is brought in.
does the ecu need time to settle in ? and could the fact ive got bp 97ron super unleaded left in the tank cause problems ?
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