Took my car back to awesome today to have the mystry drop on the power graph investigated. Anyway all comes to all there is noting wrong.its all complicated bit they said its a load based ECU and it makes adjustments for example when goin up or down hill eg more or less load. The ECU has limits and when the wheels are spinning freely on the rollers it reaches this limit and cuts the power but as soon as load was applied it was fine. I think i have explained that correctly. So in the end i could drive away a happy man with no expensive bill. I even got a car wash out of it.

Interesting, is that the same as the wierd cut out when going downhill. I sometimes drive over some rolling humps on the moors, nice smooth up and down bits like a roller coaster.

I get a wierd drop in power on the start of the down bits, every time. Seen people mention it before but never a possible reason.

Mmm not sure? I had never heard of a load based ecu till now. I asked why no other cars on the day reached there limits and they just said some do some dont. Can anyone else lend some knowlage to this? Tryin to explain it best i can.

Looking at your plot, is that a boost spike/turbo overspooling @ 2200rpm?

They said everythin was fine. They did all the logs and what ever they do and said there was no problems. Its always drove fine.

Interesting, is that the same as the wierd cut out when going downhill. I sometimes drive over some rolling humps on the moors, nice smooth up and down bits like a roller coaster.

I get a wierd drop in power on the start of the down bits, every time. Seen people mention it before but never a possible reason.

 

Ha! I get this. Hope it is normal, was worrying me!

They said everythin was fine. They did all the logs and what ever they do and said there was no problems. Its always drove fine.

Right - all good then!

My std vrs diesel does that weird cut out thing when the road drops sharply.