I have 89 s13 with a ka24e, I made a smoke machine and pumped smoke through my air intake. I replaced my vacuum lines which fixed the leaks I found. The EGR BPT lets smokes out where the air filter is on it, which from my understanding is ok because the valve opens and closes when pressure is applied. Just wondering if that is normal while the engine is off pumping smoke through the intake or if i need to replace it.

bump