scottydouk

iTrader: (3)

as title really, a friend is fitting a hks fcd and not too sure which setting to set to. wanting to run 1.2bar.
cheers

dan83590

12 if memory serves me correct..

scottydouk

iTrader: (3)

and whats difference does it make to which setting to use?

dan83590

It just raises or lowers the fuel cut point. set it to 12. Mine was at 1.3 bar at one stage (with supporting mods) with no fuel cut when set at 12.

scottydouk

iTrader: (3)

thought so even if on 12 he still get boost cut just below 1.2bar. is this because the map sensor cant handle it? car is 1995 impreza turbo

joz8968

iTrader: (13)

Yes, I'm certain that's what's happening. The v.1/2 MY93-96 OEM MAP sensor is rated at 2.2bar absolute, so it will tell the ECU to cut boost at 1.2bar relative boost pressure. Your mate needs to fit the v.3/4 MY97/98 2.4bar rated one (boost cuts at 1.4bar).

DCR59

But swapping the map sensor is not a straight swap. The car must be remapped if swapping to the later sensor, as it gets a different voltage signal.

scottydouk

iTrader: (3)

cheers people!

joz8968

iTrader: (13)

Yeah sorry, forgot to add that VERY important bit of info