When changing to a smaller pulley? List some of the problems this cause. thanks

1996 ssei.

Knock Resistance

Retards Timing

Reduces Power

Not good.

Cracked exhaust manifolds can cause a lean condition which can ruin an engine.
Make sure the exhaust manifold gaskets aren't leaking.... you should be able to hear when the cylinder nearest the leak (if any) fires.

Also look for big cracks in the flex section of the downpipe -mine is VERY obvious..... feels like about 10* KR and that'* with very light throttle. At least my transmission feels awesome!!! Mine is probably cracked from when I had my motor swapped -I suspect there was not much care put into installing the motor, hense the cracked DP, leaking trans, and damaged passenger side CV axle (boot clamp was completely gone, no damage to the boot, but the axle was SHOT).

Bandit.. Series 2 aren't known for cracking exhaust manifolds like series 1'* do. It is always a good idea to check though. As well, fuel pressure and check for KR before and after adding a pulley (only add if at 0KR). Upgrade or fix all items that can cause KR and you'll be much happier with the performance of the car and will reduce the risk of damaging the engine.