25-09-2012, 08:08 PM
(25-09-2012, 06:56 PM)Ed Doe Wrote:(25-09-2012, 05:30 PM)Niall Wrote:(25-09-2012, 05:27 PM)ginge191 Wrote: Anyone?
Well you can either do it the bodge way which i think is put the current map pre charge.
the second way is to get a 3bar map and put it post charge and have it mapped in properly but that obviously needs aftermarket management. But then again if your turboing, youd be stupid not to go aftermarket management
just thinking through this logically, surely you can't bodge the map sensor in pre turbo like you can with the supercharger conversions due to the difference on how they supply the air to the engine. Ie if you map it To provide fuel as if you were flooring it from 1000rpm to 7000rpm in gear, the fuelling curve would be completely different to if you clutch kicked it at 1000rpm. You'd then run lean cause the map sensor isnt measuring what air is actually making it onto the cylinders...
Nah, it's purely down to the fact it's not consistent with engine RPMs - the ECU needs to know when the airflow rate into the engine increases (i.e. turbo spins up...) so it can adjust the IQ and timing.
Not only that, you shouldn't put a turbo between the throttle plate, you'll wreck the thrust bearing.
Think about how the ECU is knowing the quantity of air going into the engine - the IAW 1AP doesn't understand boost without significant modification, it's only the SC setups that can do the pikey map before the charger, between the throttle plate...
