Jun bolt on cams issue

[Jason@SportsCar]

Originally Posted by remcafee

I recently rebuilt my cylinder head from accidentally downshifting from 2nd to 1st, bent all exhaust valves, so i rebuilt the cylinder head, oem valves, oem valve springs and ordered those jun bolt on cams to have a choppy yaris. i reshimmed all the cam followers to spec. timing chain is lined perfectly and go to start her up and all is good! it sounds beautiful with the cams! only 3 days later... i get multiple random misfires and have done every check possible. spark plugs, coils, rechecked timing chain alignment, and i dont know whats going on. car runs fine and pulls strong with cams, but its throwing misfire codes now when they are supposed to be stock evu compatible. anyone else running jun cams bolt on series with stock ecu?

I have the 9.5mm lift set, but run an AEM EMS-2 ecu. Entirely possible there is just a little to much overlap and the OE computer doesn't like it. Jun can say they work with the stock ECU, because it does work, but that does not mean they actually logged street miles and saw what it does. They also don't mention that you have to mill the head to clear the 9.5mm lobes, but you do.