My Ultra's been going into limp mode so I took to Local HD Dealership, they said the problem is with V&H fuel pack (which wasn't installed @ dealership) I disagree with that. After bringing the bike home I've found that with fuel pack removed, symptoms are the same. The yellow CEL comes on briefly after bike is started and then goes out. throttle works but VERY unreliable/regularly goes back into limp mode sometimes within a 1/2 mile of taking off point allways within a short time... making bike non-ridable. DTC's are2135, P0132, P0152 and P1511 or TPS Correlation Error, Front o2 Sensor High, Rear o2 Sensor High and EFI Power Management Mode.(remember the fuel packs removed) I believe it to be the TPS and the HD Dealership to be for whatever reason dodging the real issue. Any comments? Thanks!