£35 of V Power in. Everything was great until about 40 minutes in when I noticed that boost would start to come on as usual at about 3k, but then hesitated slightly and once over 4k pulled hard as normal with no hiccups.Having read up last night it is likely to be the knock sensor telling the ECU to retard timing slightly, which may be a result of several factors.
My first thought was that maybe it was a
'bad batch' of fuel, as I've never had any kind of hesitations before and that was the only parameter which has changed recently. If this is the case should I just go through this tank of fuel and then fill her up again and see if the problem persists?I'm running NGK Grade 7 Iridium plugs, Greddy SMIC, PP Departure exhaust w/Berk DP at 1.1bar and this is the first mechanical issue I've had!
Only other thought is that maybe the clutch is slipping, although I thought this might be more apparent in the higher revs.
Also it's an uprated clutch so less likely.Also due a coolant change
- although not overheating at all the pipes are all gurgling behind me once the car is turned off after a hard drive 
Not sure if this could affect detonation, especially if temp. is still reading as normal.
