I had the bike dyno tuned last winter and it runs great but now that hot weather is here there is a little bit of decel pop going on. It was happening randomly at zero throttle from 1000 to 2500 rpm. I've raised the front & rear VE's (SERT) at zero throttle from 1500 to 4500 rpm up two whole digits and this helped.I'd like to increase it more from 1250 to 2000 rpm but was reluctant until I asked. Cold idle seems to be around 1200 to 1300 rpm so will this cause an issue? What's the general opinion about setting the idle down to about 1000 rpm?

 

As an aside, did you max out your CLB tables to 798mv? I understand CLB has no effect on decel.
Decel popping may be a result of exhaust leaks. IMO check these as some time has passed. I think you either go the VE's route or the decel enleanment tables.

 

Hey,
For what its worth, I was experiencing alot of decel popping also and I tried "tuning it" out with no luck. I read somewhere to take the mufflers off, apply Copper Anti-seize and re-install. I did this today and all popping is gone!

 

Thanks for the good advice. It was tunedjust last March and the tuner insisted that he (or I) remove the slip on mufflers& reinstall with a high temp sealant. Not sure what he used but he said a leak would also cause problems with the tuning. The O2 bias tables are maxxed out.