On the subject of EFI does can any one advise where the ecu diagnostic plug is located (or what it looks like)? I have a Ace (Brooklands), which needs the engine management checked out. Since fitting the usual power adders (but not camshaft) some years back engine has irritating tendency to stall when selecting D (auto box), which no amount of T/B resetting has solved. Idle in neutral is no problem nor once engine has settled in drive, but as revs drop as engine takes up load, engine “hangs” at 500 rpm for brief moment then, more often than not, stalls.
Any help would be much appreciated.
Max