Thread: Sequential EFI

Originally Posted by Waxenwane

Thanks Luke, The vague idea at the moment is run the Gems hardware ie plenum, rail, manifold and injectors and as you with the wolf or megasqirt.

I think you'll find they are pretty much the same as any other EFI LR V8 (other than than the Thor engine).

Have a look at The Megaquirt site for discussion about sequential vs batch.
In their opinion AFAIR the auto makers only fit sequential for emissions compliance at low revs.
The valves open and close so quickly over say 1500RPM that the injector fires against a closed valve for a lot of the time anyway, as an injector takes a finite time to open and close.( The new piezo and/or direct injectors may be different, but we are not talking that here).
So their conclusion was that there is little or no perfrormance or economy benefit for the home tuner in fitting sequential to an aftermarket ECU. The benefits are mainly in emissions etc.
Seeing it is very likely that you will not have thousands of hours dyno time available anyway, my conclusion is to go the simple way with batch . It is very unlikely that you will be within 10-20% of the optimum settings anyway, unless you have access to lots of dyno time.( eg timing and load swings at every load point and revs)
Regards Philip A