28-05-2012, 04:16 PM
Yes you can do it yourself, but not everyone knows how to map it - the UK hasn't got the biggest market for Megasquirt unlike the US in all honesty...
People (read: tuners) slag off Megasquirt because in fairness, it does have relatively crappy injector control - you have to reduce the fuel pressure SO much to get the injection length fine enough for the ECU to control, the fuel vapour condensates, drips and therefore runs like a sack of shit, it's simply not fast enough or advanced enough to control 800cc injectors at idle on a 1.6 litre engine lol... Hence they lump all over the place, stall etc - that's just a characteristic of big injectors and big valve overlaps on an ECU that simply isn't fast enough to control it correctly.
A lot of places will tell you to get Emerald, MoTeC, Omex, DTA or similar, they have much superior injector control, IAC control etc...
I like Megasquirt a lot, but unless you're prepared to find somewhere with a dyno, do a MASSIVE amount of research and do it yourself, you're often better off using a system that people know about - Dave Walker is one of the UKs best people for mapping and he owns/runs Emerald - Caterham even uses Emerald from the factory, it's THAT good...
People (read: tuners) slag off Megasquirt because in fairness, it does have relatively crappy injector control - you have to reduce the fuel pressure SO much to get the injection length fine enough for the ECU to control, the fuel vapour condensates, drips and therefore runs like a sack of shit, it's simply not fast enough or advanced enough to control 800cc injectors at idle on a 1.6 litre engine lol... Hence they lump all over the place, stall etc - that's just a characteristic of big injectors and big valve overlaps on an ECU that simply isn't fast enough to control it correctly.
A lot of places will tell you to get Emerald, MoTeC, Omex, DTA or similar, they have much superior injector control, IAC control etc...
I like Megasquirt a lot, but unless you're prepared to find somewhere with a dyno, do a MASSIVE amount of research and do it yourself, you're often better off using a system that people know about - Dave Walker is one of the UKs best people for mapping and he owns/runs Emerald - Caterham even uses Emerald from the factory, it's THAT good...
