re - mapping engine for fuel economy
Discussion
I have a friend currently competing in the D1 drift series (you may not have heard of it!) and after seeing a few events I'm very interested in getting in to it. I would probably purchase a car imported from Japan with all the modifications needed already done.
Some have fancy ECU's that allow alterations via a laptop. My question is, would it be possible to have an ECU setting for maximum fuel consumption when travelling along motorways at 70mph to events? How much more econmical could this be than the standard mapping? Would it be possible to cut the engine to 3,2 cylinders? would this damage the engine in anyway? Thanks for any help in advance.
Some have fancy ECU's that allow alterations via a laptop. My question is, would it be possible to have an ECU setting for maximum fuel consumption when travelling along motorways at 70mph to events? How much more econmical could this be than the standard mapping? Would it be possible to cut the engine to 3,2 cylinders? would this damage the engine in anyway? Thanks for any help in advance.
As a Software Engineer it has never ceased to confuse me as to why modern after-market ECUs aren't offered with the ability to store several maps and switch between them. It's only data after all and storage is cheap these days.
I'd love to have different maps for economy, highest performance (95RON unleaded), highest performance (98/99/Optimax Super-unleaded), etc.
I'd love to have different maps for economy, highest performance (95RON unleaded), highest performance (98/99/Optimax Super-unleaded), etc.
JonRB said:
As a Software Engineer it has never ceased to confuse me as to why modern after-market ECUs aren't offered with the ability to store several maps and switch between them. It's only data after all and storage is cheap these days.
I'd love to have different maps for economy, highest performance (95RON unleaded), highest performance (98/99/Optimax Super-unleaded), etc.
Take a look at megasquirt then. It has switchable tables. I have a little switch that flips my ignition maps for std petrol and optimax (essentially just retards [under boost] the ignition less on optimax) it can swap the fuel table at the same time but there's no need to swap fuel maps just because its running optimax.
For economy I dont need a different fuel map, I just need to keep it off-boost and light load/throttle. Its tuned for 14.7 closed loop in that area anywhay, I could go leaner but would rather stay safe.
Most modern facotry ecu's have a lot more map information within them, than any aftermarket ecu will ever have, to cover for so many conditions the car may meet, and must run perfectly at all times.
A well mapped aftermarket ecu is very good, and does everything an enthusiast wants, but generally speaking, cannot meet the requirements production cars need to meet, year in, year out, as far as emissions testing goes.
A well mapped aftermarket ecu is very good, and does everything an enthusiast wants, but generally speaking, cannot meet the requirements production cars need to meet, year in, year out, as far as emissions testing goes.
stevieturbo said:
Most modern facotry ecu's have a lot more map information within them, than any aftermarket ecu will ever have, to cover for so many conditions the car may meet, and must run perfectly at all times.
A well mapped aftermarket ecu is very good, and does everything an enthusiast wants, but generally speaking, cannot meet the requirements production cars need to meet, year in, year out, as far as emissions testing goes.
I agree.
I think the answer to the original question is to simply keep of the power. Any modern car will sip petrol at 70mph - if its drinking it, there's a fundamental problem that needs sorting.
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