srt intake

just had mine installed feel some nice power gains however i had a custom intake in before and there were some rough idle and also around 4000 the power dropped hoped the srt/ecu would have cured that problem.the idle feels better but seems low in park and fluxuates noticed little fluxuation around 4000 at low throttle . hoping the ecu is just relearning.and input would be greatly appreciated. :-?