Looking for some advice to narrow down cause on this issue.
The surging sensation has been there for years - which I did think was related to the Catalytic converter efficiency inspecting logic - which should be resolved with MHD v10, 3.20 map - but it is the same, if not worse.
Current setup - fbo with rb turbos, inlets, etc. JB4 only connected to the two CAN wires for gauge features.
Newish related parts - hpfp, lpfp, index12 x5 & index 11 x1, intake valves, throttlebody etc all clean.
When running stock map with cats, issue not present (installed back for a while - no surging).
Install catless - oscillation is back.
Only seems to do this when throttle is under 5%. Anything above 5%, STFT reduces drastically from + - 30 to single digits.
Any advice would be much appreciated, thanks!!
The surging sensation has been there for years - which I did think was related to the Catalytic converter efficiency inspecting logic - which should be resolved with MHD v10, 3.20 map - but it is the same, if not worse.
Current setup - fbo with rb turbos, inlets, etc. JB4 only connected to the two CAN wires for gauge features.
Newish related parts - hpfp, lpfp, index12 x5 & index 11 x1, intake valves, throttlebody etc all clean.
When running stock map with cats, issue not present (installed back for a while - no surging).
Install catless - oscillation is back.
Only seems to do this when throttle is under 5%. Anything above 5%, STFT reduces drastically from + - 30 to single digits.
Any advice would be much appreciated, thanks!!