I have a 1995 pickup 4x4 with a 22re. I recently swapped engines do to a split cylinder wall with a remanufactured engine from a certified engine joint. Truck has less power now then when the old engine was in and occasionally backfires through the intake. I have the smog elimination kit (not sure if the vacuum lines are hooked up right). Has anyone else encountered this problem and can anyone help please?!?!? Thank you in advance!!!