[Gmecm] Understanding injection system acronyms

[davesnothereman at netscape.net]

-----Original Message-----
From: William Lucke <william.lucke at highspeedlink.net>
To: gmecm at diy-efi.org
Sent: Sat, 13 May 2006 19:32:38 -0400
Subject: Re: [Gmecm] Understanding injection system acronyms


  In extreme racing engines, particularly dragsters, it is possible to 
run both PFI and TBI at the same time... PFI supplies fuel at idle and 
low throttle and when the PFI injectors get maxed out, the larger TBI 
injectors start spraying. This allows the latent heat of vaporization 
of the fuel to cool the intake charge and supplants the need for 
intercooling in alcohol fueled forced induction cars.

It's not just extreme racing engines.  The ricer crowd will add 
injectors pre TB when adding a turbocharger to a N. A. engine.  New 
cars, old tricks.

Zaphod

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