anthonym Posted August 8, 2009 Share Posted August 8, 2009 I am just searching to see if I can i.d. my ecu without walking to the car (15 minutes or so) and I see there is much about remapping. I use my 2000 R500 road only (ok, aside from the 'ring last week) and cannot help but be curious what are the benefits? and do I want them? Anthony Link to comment Share on other sites More sharing options...
Andy Whittle Posted August 8, 2009 Share Posted August 8, 2009 Mapping optimises the power output of the engine by adjusting the fueling and ignition timing at various "load points" and RPMs. Basically it means you don't use too much (rich) or too little (lean) fuel to achieve maximum power and/or torque. If you run lean you will get "pinking" under load which can destroy your piston lands or melt holes in your pistons at high revs. If you are running VERY rich you can get bore wash where all the lubrication gets removed from the rings, also you emissions will be very poor. Both of these can reduce the power output of your car. Turbo cars are often set up to be rich at high rpm because the excess fuel is used to "cool" the cylinders keeping the exhaust gases lower and thus helping to produce more power without damaging the engine. If you change something major on your engine like new throttle bodies, new design exhaust primaries, fuel pressure regulator, injectors or high power fuel pump you can get you ECU re-mapped to take advantage of the new performance parts. I am Leg End... Link to comment Share on other sites More sharing options...
Johnty Lyons Posted August 8, 2009 Share Posted August 8, 2009 If you change something major on your engine like new throttle bodies, new design exhaust primaries, fuel pressure regulator, injectors or high power fuel pump you can get you ECU re-mapped to take advantage of the new performance parts. Ah BUT only if it's a programmable ECU not a MEMS jj MTM , N.I. L7C AR 🙆🏻 Membership No.3927. 240BHP 1900cc K Series 40th Anniversary Link to comment Share on other sites More sharing options...
anthonym Posted August 8, 2009 Author Share Posted August 8, 2009 I'll bite: what's a MEMS? Link to comment Share on other sites More sharing options...
anthonym Posted August 8, 2009 Author Share Posted August 8, 2009 ah, an ECU type. Link to comment Share on other sites More sharing options...
Johnty Lyons Posted August 9, 2009 Share Posted August 9, 2009 Sorry Anthony wasn't trying to be clever The MEMS is the std ECU that Rover supplied Caterham for most of the K derived engines. jj MTM , N.I. L7C AR 🙆🏻 Membership No.3927. 240BHP 1900cc K Series 40th Anniversary Link to comment Share on other sites More sharing options...
anthonym Posted August 9, 2009 Author Share Posted August 9, 2009 no I realise that, I was just a bit out of my depth. I should be used to it by now :-) Anthony Link to comment Share on other sites More sharing options...
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