Hello,

Maybe someone has MAF charts to compare LNA 1620 AA (x306 xjr automatic) vs LHE 1620 AA (x303 3,2ltr automatic) vs LNC 1620 AA (x306 xjr manual)?

 

I saw a factory chart but it does not specify which AJ16 engine

Saved it to an old broke computer

At the proper idle speed they should all read 1.2 volts DC on the connector middle wire

As an engineering rule of thumb for every liter of displacement at 700 PRM it should draw 1.0 grams per second as a parameter ID with a ELM - 327 device

This would only prove it is alive

There is a software error in some of the devices where you have to multiply the MAF value by 10 or 100 , Chinese copycats from the original Canadian company patent

At wide open thottle you should see 175 g / sec on the 4.0 and 225 g / sec for a factory supercharger setup

The voltage value would be approaching 5

There us a TSB to not race the engine stationary like a driveway , may have to do with transmission / torque converter cooling

 

Chart I have managed to find is attached. But as You say. It does not mention, which model exactly it is. Some say that it's of XJR.

 

The chapter that it is mentioned in is the supercharger as a clue only but you can compare to the 175 / 225

 

According to the table at 4,7V it provides 284g/s :/

 

The chart was probably supplied from Lucus with the high and low values not the subject engine's idle and max RPMs

It may not account for supercharger gas compression

The electronic governor engine ECU RPM is higher then the transmission ECU shift point of sport mode 5000 and more like 5850

 

That flow rate vs voltage is the XJR's MAF. I'd be curious to know what NA chart looks like too.