I am having some det. probs. I have a 01L with a 4lb. lower, cold air, superchips flip chip. This just started when it got cooler outside. The only thing I have not does is the plugs. The chip is programmed for all of the mods. plus a 2lb. blower pulley, but, I have not had a problem until now even w/out the 2lb. on there. Any advice would be greatly appretiated.

 

Might try some colder plugs. What octane gas and how bad is the detonation? Is it only slight when you stand on it or does it happen under moderate acceleration? If it is knocking hard then you have a bigger problem. I'm not a big lightning guru so I'll have to ask if the stock fuel system is up to the extra flow.