It's happened again today!
Had a trip to Haynes Motor Museum, gave it a few blasts on the way down, some decent blasts and it coped well! I was really impressed and shocked at it reaching and holding over 30psi of boost!
But you can't keep that sorta power on for long as the speedo soon flies up. On the way home I'd been driving pretty nicely - getting 51 average MPG. Was going up a long, steep hill (not booting it - just keeping a constant speed) and I suppose it would've been doing nearly 20psi boost, got to the top of the hill and i felt the dreaded power loss again. Just blipped the throttle and the super loud exhaust was back.
Borrowed a mates fault code reader and it says no fault codes were found - even when taken out on a quick drive.
ALTHOUGH it did say I was doing 22.3psi of boost on tickover.
I think his fault code thing was broken in the department. Air temperatures went from 70ish degrees F to 90ish degrees F after about 5 seconds of hard acceleration, is that normal?
Manifold pressure was up at 75 (whatever it's measured in) and that didnt move no matter what i did with the throttle.
Something isnt right. And I wanna know what.
I've heard it's more than likely a fault with the mapping, a sensor fault (but no fault codes found) or "sticky veins" on the turbo. I certainly hope it's not turbo issues.