Finished the Andrews 54 install last week on my SERK4, used SE adj. rods, left heads alone, applied map that Steve George provided with cams. I have Vtuned and other than decel pop between 4k - 2.5K rpm, the bike pulls harder from 2k up to 4k, measured by the seat of my pants. Overall the bike seems much crisper in throttle response. The build to date is 2" FULLSAC baffles, Zipper's Maxflow AC, TTS and Andrews 54. All mods were done in steps and all yielded improvements. I have not had the bike on a dyno and not sure if I will. This was my first time in an HD engine and the cams took about 5 hours, took my time, and re-read a lot.
Tried a number of adjustments with AFR and VE and can't seem to stop the decel pop, checked front header torque (new gasket when cams were done) and collector joint, do not think I have a leak. Because the decel pop runs so long I do not think its the decel enleanment.
Anyone have any ideas?