Question about Mass air

[Nixon1]

Originally posted by Mustang_289
We tried putting on a K&N cononical high flow filter on our 88GT with speed density. The car idled like crap, I was told the speed density couldn't compensate for the addiitonal air flow. We took it off and put a stock filter back on and it idled fine.

Sounds like something was wrong with the Manifold Pressure sensor possibly....SD cars, from what I've seen, have a very good ability to adapt themselves..it's just in extreme instances, like supercharging, or high hp cars, where they can't keep up.