Quote:
Originally Posted by actwithclarity
Ya I'd really like to get instrumentation but I don't know what I can do, car is OBD-I so MPGuino looks like the only option, and I'm pretty sure it's beyond my electrical skills (0) to install it properly. I'm not really sure what a vacuum gauge does, or what you hooked it up to, but that seems even harder to install.  |
Vacuum gauge shows engine vacuum, the wider the throttle opening and higher the load, the lower the vacuum so basically what you are working for is the highest level of engine vacuum.
All that's involved with hooking up a vacuum gauge is finding a vacuum line with a good source of constant manifold vacuum and placing a T in the line to run a line to the vacuum gauge. Takes less than 15 minutes to install.
I have one installed in my '88 Escort. The engine vacuum at idle is about 20-21 inches, deceleration is about 23-24 inches, WOT is 0 inches and all other conditions vary depending on throttle plate opening and load. The vacuum gauge just makes you more aware of the pressure you're applying to the pedal. I know this isn't a very scientific explanation, but maybe it helps you understand it's benefit.