i recently finished my h/c with LE2 heads and a cc306 and it has a little lope to it, but i've heard soundclips of other people with the cc306 and the lope just sounds nasty. is there any pcm tuning that i can get done to it to get a bigger lope? like would lowering the idle speed help me out there? or would lowering the idle speed be bad on the motor? right now its tuned from PCMforless, so idk if anybody knows what he sets his idle speed at and if it can be lowered. Thanks

 

You can look at the desired idle speed and actual idle speed with a scanner. Maybe you have a situation where it is not maintaining the set idle speed when hot.

 

lower the idle speed

 

Put in a 260/270@50 on a 108+4 and it will lope plenty.
Turn the idle screw CC until it will just idle in gear with the air on and try it.