2000 rpm splutter
Hope someone can help, I recently got my 166, it has a 400 miles old new engine after the other one blew up, the bloke who I bought it off did it himself and only replaced the short engine, however the blow up was caused by someone grounding it at high speed and cracking the sump, I've now had it replaced as it was leaking oil lots ! I noticed before the sump change it was also spluttering a bit when cruising at 2000 - 2300 rpm and lagged a bit more than it should, at idle its fine and above that rev range its fine, so I changed the Maf, DOH ! It's still doing it !
Any ideas ?