Posted: 30 Jan 2008 14:48
Fabian , Thanks! Yes right now I am studying G.M. C3 , Ford EEC, Chrysler OBDII MPI. This gives me the necessary knowledge about the varous sensors and actuator voltages at various ranges, idle to WOT. Then the Closed loop inputs which are based totally on the wide band oxy sensor voltage inputs after various conditions have been met in open loop. Open Loop is the bases of the sensor inputs in order to maintain drivability during warm up, when those conditions are met the PCU goes into closed loop unless it's a Ford product. Then the ford uses both,(their version of A.I.), in reality it a trouble prone system. I think I am going to get the MS-II next month and start amassing my sensors peicemeal,(probably off of E-bay), some times they can be bought very inexpensive on there. BTW, Fabian do you know what the Baud rate of the MS-II is? The other injection companies want an outrageous amount of money. I heard the edelbrock,(Webber Maranelli?) is having some tuning problems, yeah the fuel maps can give you a fit, and the WB02,(during closed loop of course), is a godsend! Thanks for any input Fabian, I need all the advice I can get right now. Dave Hughes is starting to act "weird" with my order....(I think he wants to suck me in to getting a complete engine built from him, all I wanted was the block and stroker kit)!fbernard wrote:airfuelEddie wrote:forced induction
Funny, but that always seems to be THE reason why people will make the switch to an EFI system....
Even if there are many more people now who have megasquirted their Mopar, it's still pretty rare, so you'll have to get real familiar with the system. You need to know the theory of engine operation (closed loop vs open loop). And it probably still takes a long time to get the injection maps right for all situations.
A WBO2 is mandatory, and I'd guess an exhaust pyrometer would help a great deal also.
The user interface and tuning software has really matured though.
And the price is much better than any other aftermarket (BigStuff 3, Accel DFI, there's also Aeromotive but I've heard so many horror stories about their service).