My baseline was 170 did an oil change, new spark plugs, valve adjustment, test pipe and went up to 178, dont know why mine is so low, this was on a land and sea dyno.

 

Maybe it is low compression, have you checked and performed a leak down test?

 

what is the compression supposed to be on our cars?
on my srt-4 it was 150psi and that was new. My dsm was 175psi.

 

just make sure they are all pretty close to eachother

 

I have heard varying numbers from 180 to 220. These are very high compression vehicles. Like posted above as long as they are within spec of eachother you should be okay. I would be worried if one was a lot lower than the rest.