more fuel pressure

[tom cloud]

>Dave Zug wrote:
>> 
>> I was given a tip on my car's website, that if i "crush" the pneumatic
>> pressure regulator on my 3.1L PFI-T pont. engine, i'll get more fuel for
>> a given vacuum. this is because you'd be loading the spring inside the
>> regulator.  I absolutely am NOT going to do this, but does anyone have
>> another way to affect that regulator without buying boosters etc? its
>> ONE thing that my ECM CANT alter, that i'd like to. is it
>> disassemblable?
>> 
>> ps I have only 40 psi at idle and 60 psi at WOT.
>> 
>> later~
>> dave   @:-)-[--<
>
>I don't know if its disassemblable, but if you run a higher pressure 
>across the operating range, the adaptive learn will simply correct for 
>the overfueling.  The only way around it is to disconnect the O2 sensor 
>and raise the pressure, in which case you get a Check Engine Light, not 
>to mention that its illegal and it will damage your catalyst.
>
>Best Regards,
>Mazda

Mazda,

While I understand about the 'adaptive learning', don't most engines,
at WOT, go to a speed density type mode which utilizes pre-set parameters
while ignoring the EGO?  If so, wouldn't the net effect be stock
performance during normal operation (except idle, where there might be
more petrol than the system can adapt for), and improved performance
at WOT?


Tom Cloud <cloud at peaches.ph.utexas.edu>