ECU Reflash, issue???

[Allen D]

I just got my ECU back from Ivan and I'm noticing something I didn't before..

When on the highway, in 6th gear, doing about 75mph if you have to drop the hammer and accelerate hard and quickly, I have all kinds of nasty chatter coming from the motor. It sounds like the motor is about to detonate. Before the re-flash it didn't do that...

It's only when in 6th and happens about 3000rpm. In lower gears I can run that thing to redline and nothing, put it in 6th and accelerate hard while on the highway and clatter and chatter galore. So much so I'm fully expecting my motor to give up it's magic smoke and shoot sky high...

Anyone else notice this?

I thought I'd ask here now since Ivan is gone until the 15th.

Thanks.