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Originally Posted by chetanhanda sure .. but can u let us know what are you looking for specifically ?
I mean... principle/effect WRT : ignition timing, fuel,valves,cams, etc ? |
Ok. Here goes. Speed/density metering or mapping is usually dependent on engine speed, air density and MAP.
Alpha-n is the advanced version for mapping which can take in more radical cam profiles because it reads from the engine RPM and throttle body positioning only, bypassing the MAP.
Now, both systems/routings are prone to vacuum errors/stats.
The Escorts had TBIs. How exactly did the alpha-n system "improve" the combustion characterisitics? AFAIK, MPFI's have much more precise fuel metering, correct?
Ok. Now for details. Let's have in detail the effects on cam profiles for alpha-n (since that's what's used for racing applications- we know that poppet and stem height are in direct relation to lift; so we'll go into that later),and ignition timing (both ignitor mapping and delco alteration-for the Escort). And how exactly do both of them alter IPW at WOT (assuming WOT is at 100%, both systems are giving 100% fuel flow)....
Simply put, let's have in detail the differences in ACTUAL practical applications, and how-to's...
P.S-Nice to know about Autozone. They are regulars in ACI ad-section...and let's wait and watch, eh? Mumbai was supposed to get 2 dynos quite some time ago; still nada...