sk8rfreak345

I have a ka24det running weird.

9 out of 10 times I start it, the vacuum gauge reads -17, idles sputtering, running really rich, black smoke. (when i try to accelerate it doesn't hold boost)

that other 1/10 times it will start up perfect, vacuum at -23, perfect idle, no smoke, holds boost almost perfectly (~6psi.).

i have 2 separate maf's that i have tried with no success. checked for leaks and fixed them except a small one by the iacv.

So what could be causing it to work right occasionally? any suggestions?(seems it would be something electrical.) thanks in advance for any helpful comments, and yes i have searched, cant find any cases that completely match mine.

if it helps at all its has a s14 t28, sr injectors, an n60 maf and an Enthalpy tune.