Beef,
Before you can choose an ecu you need to know the following...
Who is mapping it ?
Who will install it ?
How much can you afford ?
Originally Posted by tabetha
Unless doing zillions of revs sequential ignition is pointless
Why ?
You are missinformed or do not understand the technology !!!
Nearlly 75% of all petrol cars in europe now have sequential COP ignition.
Do manufacturers fit these things for fun or do road cars do high revs ? .. NO !
There are many other advantages for manufacturers such as but not limited too the following ..
Space saving
Cheaper wiring
Reduced power consumption
Reduced plug wear (compared to wasted spark)
Reduced EMF emmisions
Reliable missfire detection (if fitted)
Reduced exhaust emisions
Single coil/plug failure still allows 3 cylinders to run (versus wasted spark would drop to 2)
While it may be slightly expensive to retro fit COP to an existing car that doesnt make it "pointless"
Originally Posted by tabetha
... if mapped correctly closed loop is pointless.
Utter bollox !!!!!
An engine is a constantly changing entity that wears with time.
Closed loop ensures correct operating conditions for light and mid loads where the car spends most of its life thus saving fuel, reducing oil consumption through reduced bore wash and thus extending engine life and saving money at the pump !
Also, changes in air pressure/density/temperature can slighlty affect AFR on speed desity ECU's (non AFM) and closed loop can correct for this.
Mapping serves only to provide a single point in a grid that is mapped where the correlating points are a linear line that isnt always right.
Closed loop also corrects these unmapped inbetween points.
Are you saying all the car manufacturers in the world fit closed loop do it for fun ?
I would like to hear your reasons for such a rediculous statement !!
