If you have 10psi of vacuum because your slides are all the way down you will have 10 or maybe even more psi less compression. Now when you mentioned it, I'll run a test with full throttle and no throttle at all, just to see the difference. Sent from my VOG-L29 using Tapatalk
If it runs good, then run it! Don’t fix something that isn’t broke! Buy your own tester! $30 or $300. Just buy one. Use it, and your procedure as a baseline. But, until it gives signs of slowing, run da fuck outta it, that’s what they are made to do. Good gas, good oil, good warm up. Run it!
You will not get a accurate reading with “bad” reeds. Throttle open to allow Maximum amount of air into cylinder to compress. Sent from my iPhone using Tapatalk
You guys realize that the stock curve in the dyna is not the same as the stock curve in the oem ignition right? The dyna curve is actually advanced 4 degrees over what the oem igniton is at 9,500-10,000 rpm range. So you werent running it on the same as the oem curve.