Hi guys, after a few weeks of frustration and things just feeling a little off, with the assistance of the search feature here and the advice of you kind folk I have tried a number of things, the most recent of which, has seemingly narrowed down the problem component. A little over a week ago, after aforementioned searches, I decided to try to rule out the MAF. Although, I didn't do what, in retrospect, I should have, and simply unplug it. I decided to take it out and inspect the probe, which looked to be in very good condition. Either way, I thought that it would be worth trying to give it a very gentle clean with a delicate alcohol based contact cleaner. I then thought that it would be a good idea to pull the usual fuse for a while to reset the ECU (thinking that it would be faster to forget any incorrect values that a potentially faulty MAF had been providing than re-learn). Once I was sure the MAF was 100% dry, I reassembled and went for a drive (with a friend on his CBR600RR through some incredible twisties!), and, WOW, what a difference! That 'off' feeling that had been bothering me for so long was gone in an instant, convinced that I had fixed it, I was over the moon.
Following on from that, over the course of the following week and my commute to work, that 'off' feeling slowly came back, and it was as bad as it was previously before the week was out (e.g. misbehaving on partial throttle and not recirculating properly on occasion - turkey) in addition to this, something that I wasn't aware of until I had felt it running smoothly after the clean, it felt as though the ECU kept reeling the power in (even though boost pressure readings didn't change).
I did wonder if perhaps the MAF clean hadn't done anything at all. Could it have simply been that the ECU reset temporarily undid the damage by forgetting a bad calibration, and then as it relearned via potentially bad readings from a faulty MAF, the problem crept back with time?
So this time, as per forum suggestions on other posts, I simply yanked the MAF plug without an ECU reset, and, in an instant, the CEL was on, the power was back, it was back to running smoothly and there were no turkeys within earshot! Although my exhaust was popping considerably more on rundown?
To me this would suggest that the MAF is the problem. But before I drop a ton on a replacement, is there anything else I can do (as a noob) to confirm this? I understand that with the MAF unplugged the ECU also stops taking readings from other sensors (lambda)? Is there anything else I should rule out first?
Many thanks,
Damian
p.s. It's a Tubby.
