996TT/GT2 mit Motec
Discussion
How come I feel like I am digging a hole by starting this thread off?
I talked with Motec UK today and we have hatched a plan to piggyback the M800 ecu onto a stock 996TT wiring loom & ECU so we can properly map all the turbo variants of the 996 with bigger injectors, more boost, free flow exhaust, bigger turbos, etc. We have a customer lined up for the first one, so all interested parties should watch this space.
Incidentally, I THINK that Gemballa used Motec on their 2002 "tuner grand-prix" car (GTR750?), so it's not going to be a problem proving the performance of the Motec system.
I talked with Motec UK today and we have hatched a plan to piggyback the M800 ecu onto a stock 996TT wiring loom & ECU so we can properly map all the turbo variants of the 996 with bigger injectors, more boost, free flow exhaust, bigger turbos, etc. We have a customer lined up for the first one, so all interested parties should watch this space.
Incidentally, I THINK that Gemballa used Motec on their 2002 "tuner grand-prix" car (GTR750?), so it's not going to be a problem proving the performance of the Motec system.
IMHO the knock control system is not all it's knocked up to be. As I understand it, all the system does is listen to the engine and compares the noise coming from it with the noise of a pre-programmed standard engine, and any excessive frequencies/amplitudes that are heard are deduced as knock and the timing on the offending cylinder is backed off accordingly. The system is theory is great for a road car, but from what I am lead to believe it has limited use at full power/full load due to the racket that comes from the engine in the first place. The knock sensing side of the ecu is actually as complex as the engine management side, so only the most sophisticated ecu's have the capability to run it effectively.
The M800 does not have knock control, but it is, in theory, possible to put in safeguards to eliminate the need for it. We can run with exhaust gas temperature compensation (too high = more fuel & less timing), engine temp comp, air temp comp, etc, and we can also map it on premium unleaded first then use super unleaded as a safeguard. Finally we can also use wide band Lambda control (which the factory ecu does not have)to ensure ideal fuelling at full throttle, but the bottom line is that it is (in theory) better to have knock control but it is (in practice) not all that good.
We do have access to systems that have self learning knock sensing, but would you purchase an ecu at £5,000 then have to pay another £9,500 for the software to program it? No, neither would I, but if you want me to fit one for you and you are willing pay for it I will. Food for thought
The M800 does not have knock control, but it is, in theory, possible to put in safeguards to eliminate the need for it. We can run with exhaust gas temperature compensation (too high = more fuel & less timing), engine temp comp, air temp comp, etc, and we can also map it on premium unleaded first then use super unleaded as a safeguard. Finally we can also use wide band Lambda control (which the factory ecu does not have)to ensure ideal fuelling at full throttle, but the bottom line is that it is (in theory) better to have knock control but it is (in practice) not all that good.
We do have access to systems that have self learning knock sensing, but would you purchase an ecu at £5,000 then have to pay another £9,500 for the software to program it? No, neither would I, but if you want me to fit one for you and you are willing pay for it I will. Food for thought
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