Originally Posted by
chim13
I hate to disagree but i have been running the od plugs with no issues for years. I understand that Ed and Joe recommend the p4 but i have had no problems with the od plugs and will not in the future either. I am sure that i would get better performance out of the p4 as joe stated but i have no complaint about performance that i am getting now.
chim after reading what i said it kinda didnt explain what i meant. os and odonnel plugs have dif. threading. switching back to os and then trying to go back to odonnell could cause problems with air leaks forming at plug. im not saying that theres anything wrong with odonnell plugs they run good but just switching back and forth could be bad.