A little problem

[Jackpine]

That's more than weird! How can you have such bad performance and not see it on the tach?

Except, I wonder if the timing was suddenly wrong? Possibly overadvanced? You'd think there'd be "ping" though, if that were the case. And, if it was suddenly retarded, you'd certainly lose power, but I doubt you'd get the other symptoms. Valve timing? And, no codes - really weird.

Wonder what happens if you go back to the performance tune?

- Jack

[JWBFX4]

Originally Posted by JackandJanet

That's more than weird! How can you have such bad performance and not see it on the tach?

Except, I wonder if the timing was suddenly wrong? Possibly overadvanced? You'd think there'd be "ping" though, if that were the case. And, if it was suddenly retarded, you'd certainly lose power, but I doubt you'd get the other symptoms. Valve timing? And, no codes - really weird.

Wonder what happens if you go back to the performance tune?

- Jack

Yea I found it very strange not to see it on the tach. I did not hear any pinging whatsoever...had the radio and everything off so that I could listen good. You could kinda hear a pulsating in the exhaust tone. Also definitely no codes....checked a couple of times.

I thought about switching it back to the performance level and see how it would act, but I have been trying to log some time in the tow tune to see how it would act and make sure it was staying normal.