Hi all, thinking of swapping my type "4" TH cams for some ralliart "7" cams I have here, courtesy of Dave. Do you think it is dangerous, ie, damage to the engine to drive it before it is tuned. I sort of need to as its the family car. It's tuned to its optimum now (safe tune) for 98ron on a greddy emanage. And the tuner is about an hour and half away. Should I expect it to run a bit hairy?

Thanks