Was driving to work today. On the A30, 50mph, driving in manual mode, 4th gear, 3kRPM or so. Car starts slowing. Apply more throttle, nothing happens, I start to get a little worried. Hit the paddle and drop down a gear... gearchange occurs, but still no response to throttle. Warning indicators on, get ready to pull over, car behind still a little way away so drop into second. Again gearchange occurs but no response to throttle. Pull over onto the side of the road, mount the kerb, gear automatically drops into first. I put the car into Neutral and try throttle... and there's a blip. To be safe I turn the car off, and then on again, and gingerly get back on the road. No problem for the rest of the drive.
I drove 250 miles on the weekend with no problem :S so this is a bit disturbing. And it's not like the only other time I lost drive, with flashing PRNDS, then it was like the car was in neutral and the accelerator pedal still responded. That was resolved as a faulty tiptronic switch, more than a year ago.
Anecdotal: the most recent map I've loaded from Superchips causes a funny startup. The engine starts, revs to around 900RPM and then dips, seems like it's going to stall, and then picks up again to the normal 1100 RPM-ish. Yesterday the car actually failed to start twice. When I restarted the car after each occasion, a blip of the throttle was required. Also last week I've been having very minor stutters throughout most of the week, a bit like a throttle surge, particularly so when changing gears. But over the weekend, nothing, perfect performance except for the start.
Thoughts?