Saxperience - Citroen Saxo Forum - View Single Post - The Saxo and 106 turbo / superchargered conversion guide

blackie_2k5 · 5th November 2009, 20:32

the fifth injector works alongside you standard ecu and injectors, your standard's set as is, unturboed supplies fuel/air mixture in all rev ranges as is needed to run your car, this is what the ecu is programmed to do, when running a boosted set up your ecu will still supply the same as before as this is all it knows how to, you fit and mf2 and fifth injecotr unit to supply the extra fuel needed in all the rev ranges particularly the when the boost kicks in as your stock ecu does'nt understand it needs to as it cant read boost, so the mf2 is a seperate unit that controls the fifth or sixth injectors only, it hard wires into you engine loom and you map it by screwing/unscrewing the potentiometers.. each screw accounts for a rev range.... eg the first screw is 0-1000rpm 2nd screw is 1000-2000 rpm, so you adjust it to supply the extra fuel needed in each rev range for when say the boost kicks in and without it the car would under fuel, bit of a shit explanation but im v. tired and trying to explain how it works lol, mf2 as a manufacturer claims the mf2 and fifth/sixth injector can add enough fuel for up to an extra 200bhp... so its quite benficial but not even in the same league as say stand alone or even a piggy back ecu like a dastek, as these are all one sytem that uses just the four (or however many injectors your engine has) injectors your engine has to fuel your set up... with the added advantage that it understands boost and can account for changes etc the mf2 cant

5th November 2009, 20:32	#13
blackie_2k5 Saxperience Hardcore! Join Date: Oct 2008 Location: Birtley Posts: 22,253 Car(s): VTR Turbo, 106 xsi track slag, Transit recovery, B iTrader Score: 25 (100%)	the fifth injector works alongside you standard ecu and injectors, your standard's set as is, unturboed supplies fuel/air mixture in all rev ranges as is needed to run your car, this is what the ecu is programmed to do, when running a boosted set up your ecu will still supply the same as before as this is all it knows how to, you fit and mf2 and fifth injecotr unit to supply the extra fuel needed in all the rev ranges particularly the when the boost kicks in as your stock ecu does'nt understand it needs to as it cant read boost, so the mf2 is a seperate unit that controls the fifth or sixth injectors only, it hard wires into you engine loom and you map it by screwing/unscrewing the potentiometers.. each screw accounts for a rev range.... eg the first screw is 0-1000rpm 2nd screw is 1000-2000 rpm, so you adjust it to supply the extra fuel needed in each rev range for when say the boost kicks in and without it the car would under fuel, bit of a shit explanation but im v. tired and trying to explain how it works lol, mf2 as a manufacturer claims the mf2 and fifth/sixth injector can add enough fuel for up to an extra 200bhp... so its quite benficial but not even in the same league as say stand alone or even a piggy back ecu like a dastek, as these are all one sytem that uses just the four (or however many injectors your engine has) injectors your engine has to fuel your set up... with the added advantage that it understands boost and can account for changes etc the mf2 cant Last edited by blackie_2k5; 5th November 2009 at 20:35.