Effect of Improved Air-Flow on Speed-Density EFI

[robert dingli]

George McLaughlin III asked,
> 
>  I have been following the thread regarding speed-density EFI systems 
>  for some time now, but still am somewhat perplexed as to why 
>  improvements in air intake would not positively affect engine 
>  performance.  I would assume that greater air flow would lead to 
>  higher MAP values and the ECM would adjust the fuel mixture 
>  accordingly (assuming it does not fall outside of the range of its 
>  tables or the capacity of the fuel injectors).
>  
>  Where am I going wrong in this assumption (and does the fact that 
>  this is a turbocharged engine affect things at all)?

Your assumption is correct providing the efi system has sufficient
reserve to cope with higher MAP values.  Simply derestricting the 
input path should not be a problem.  Adding a turbo to a normally
aspirated speed density system would be a bit much for your average
ayatem to cope with.

regards,
Robert
-- 
    Robert Dingli   r.dingli at ee.mu.oz.au
Power and Control Systems    (+613) 9344 7966
Thermodynamics Research Labs (+613) 9344 7712
     University of Melbourne, AUSTRALIA 
**  he who dies with the most toys, wins  **