More Horsepower. More Torque!!

[Bruce Plecan]

-----Original Message-----
From: Dave Hempstead <dave_hempstead at hp.com>
To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>;
dave_hempstead at hp.com <dave_hempstead at hp.com>
Date: Tuesday, March 30, 1999 8:23 PM
Subject: More Horsepower. More Torque!!

There is no miracle golden bullet to calibrations.
On the new stuff, it takes alot of work to find any power.
Couple percent maybe.
Need to use a G-Tech or something, and measure increases.
Often what feels faster is slower!!!..
  Now, the moment you change something that is a diferent story.
Specially things to improve airflow thru the engine.
Mufflers/cats/intake tract.
Bruce


>   Given a stock GM engine (let's say, a '95  5.7 liter  LT-1, since
>that's what I have :-), what kind of differences in torque and
>horsepower can we get by modifying the computer??


>   Here is one way I'd implement it.  For me, I can take one of the
>PCM's inputs, let's say the A/C input and wire it to a switch.  Then
>let's assume I can modify the software.  I use the switch to select
>either 'standard' operation or 'yee haw' operation.  I can switch modes
>whenever I want.
>   OK, so what can be changed in the software?  Here I don't know enough
>about tuning our engines.  Could it be as simple as telling the engine
>it is running in WOT mode, going open-loop, richening up the injectors,
>etc????  What do you experts think?
>Food for thought,
>Dave Hempstead