So Zed is running rough.
Car is '54 UK GT DE has 30k miles. Vortech Supercharger, DW600cc, Kinetix SSV, Uprev GT MAF, AEM basic return fuel system, etc...Uprev tune.
It idles ok.
If held at constant revs or constant speed it runs ok.
Any acceleration when driving or reving when stationary and it runs lumpy almost like its missing a cylinder.
I have had a bit of a tapping/rattle at a certain rev range (usually between 2000rpm and 3000 rpm) that I thought was behind the dash, but I’m now wondering if its engine side of the bulk head and possibly related.
Things I’ve checked -
Plugs look good, but changed them anyway – no change
MAF is clean as a whistle
Throttle body looks clean
Looked for boost/vacuum leaks, nothing obvious but haven’t pressure tested yet – I hope to do that when I get home next week. Vacuum at idle is about 22 inHg and it does make boost but runs rough.
AFR on bank 2 seems normal when idling and driving but I haven’t got a sensor in bank 1 so that’s unknown.
I have had a bit of a tapping/rattle that I thought was behind the dash, but I’m now wondering if its engine side of the bulk head , Changed the fuel damper on bank 2 in case it was that, but no change.
I have also, removed the S/C cog belt so running n/a but no change.
Disconnected and bypassed oil catch can, taken off vac/boost pipe from Fuel Pressure Regulator
Any ideas on where to look next?