randallb wrote:
Rag,
You have been one of the many who have experienced no issue but, if you were one of the people who had an issue your outlook would be different. My statement comes from having seen enough hypereutectic piston upper ring land failures to convince me I would not add any additional ignition timing to a factory engine using a hyper piston. Are you aware that most of the aftermarket tuners made significant changes to their timing and fuel maps based on issues? Please read the following article, www.probeindustries.com/Articles.asp?ID=144
Randy
Thanks for the article that was written by a company that sells forged pistons. I'm not saying that what was written was not factual but after 60,000 miles of use, I can say that my Ultra ECM was NOT programmed with any pre-ignition or detonation concerns. Obviously they kept the timing specs within the acceptable parameters for my engine. My 14.7 AF ratio also indicates that they did not lean the engine out to the point of detonation.
I do not doubt that some tuners reprogrammed the ECM for MAXIMUM performance, could push the limits of ANY engine but that is not the purpose of the Ultra tune.
