swap issues

teshjdmwagon

can anyone help me with my vaccuum lines i have a 88 wagon with a b20b and 92 ls intake manifold but my car boggs sometimes and sometimes the rpm goes up and down any ideas anyone?

Darren

check that the coolant doesn't have air pockets, that will cause the rpm variance. Bogging could be due to a sensor. check map, and o2

Jaker

What ECU are you using?