The Honda MAP sensor vs the Nissan MAF has nothing to do with how the
ignition works. This is the difference with how the cars ECU's measure the
amount of air the engines take in. The reason why Nissans don't work with
FPR's is that the MAF system can sense the increse of air flow throguh the
motor that mods give and the ECU can compensate for the additonal airflow.
The Honda MAP cannot do this well so additional mods need additional fuel
pressure to richen the mixture.
Nissan ecu's handle mods better. This has nothing to do with the ignition
system.
A curious thing that I have noticed in testing is that Nology wires don't
seem to work well on turbocharged or MSD equipped cars. I am not sure why.
They seemed to make a very slight difference in bottom end power with an
otherwise stock ignition.
Mike
>Honda's ignition is different than ours along with the way it reads the
>air.
>Remember, the fuel pressure riser works very well in Hondas because of the
>Speed density reading of air as opposed to the nissan MAF readings.
>Nissans
>really don't gain much at all with FPR's. They gained like 2 HP or
>something, not much, but the Honda's seem to gain very well with these
>things. Its just what works well. I think Nissan had to come up with high
>output ignitions because of emissions. Even with smaller cams and better
>combustion chambers, it still needed a strong igition.
> What I can tell you is that the MSD did nothing for Emisions,
>neither
>did the Nology hotwires and profire coil with power core amplifier. I
>tested
>the readings (help of uncle not being charged). I burned with OEm ignition
>and magnecores with NGK's a reading of 130ppm HC. The rest of the
>ignitions tested exactly the same, so at idle and at 3500 rpm test, they
>read
>virtually the same. I think the Nology burned 1 ppm better at the 3500
>test.
>
> Chris 92 classic
>
>
>
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