Camshafts, idle quality, driveability and LSA-REAL WORLD EXP and OPINION

Which is why I seldom build engines anymore. I build them to RUN WELL with the customer's application. Period. If they want Whiplash this or Thumpr that, they can move on.
I believe Iq52 has tried the thumper this or that and wasnt all that disappointed with it.If I were your customer and you didnt listen or explain what was wrong with my selection I would figure your customer service sucks and thats why you arent building many anymore.Sometimes arrogance is your own no. 1 enemy.