Every now and then when i come off a slow turn and gear down to second, the rpm's at about 1500 rpm, when i give it gas the car tends to stumble a bit then takes off normal once i get past 2200 rpm or so. Is that clutch slippage? It will also very rarely will do this when starting off in first from a stop.

 

No. Clutch slippage is basically where the engine outruns the clutch a little bit, kind of like riding with your foot slightly on the pedal.

 

no, that's something else wrong. Slippage is when you give it gas on an up hill climb and you rpms start climbing fast and the car is going no where, or when you shift hard an the rpms fall slowly with it in gear.

You'll know when the clutch slips, your car sounds like it's going some where but it's really not

 

So what could cause intermittent low rpm bogging?
The previous owner had put in an adjustable fpr, could that be causing it?

 

Mine does that sometimes, even with my new clutch. Engine is all stock. Just the other day I was in a parking lot and started off in first gear. Suddenly it seemed to lag for a few seconds (like the car wasn't moving as fast as it should), then suddenly jerked forward and moved along as it should. Clutch was fully engaged (not touching the clutch pedal) and my foot was steady on the gas pedal when this happened.

This is just a rare, random occurrence. It happened more often on my old clutch and I figured it was slipping. But even my new clutch does it on rare occasions. Not sure if it's the clutch or not, but I just assumed so.