Re: 74mm Throttle Body, surging idle
Mine was leaking where the elbow mates to the TB. The gasket that goes on the inside of the inside of the elbow was messed up. I smoothed it out and put just film of lube around the parimeter. The other thing I had a problem with was the large MAF snsor. I removed the sensor it came with and put the sensor from the old MAF in place. Works very good now. Let me know if anything helps.