I have a set of NEW carb-legal Bassani mid-length headers for sale. PM me if interested

 

My FIPK did drop my IAT's by an average of 10* compared to an identical truck on the same drive at the same time. and gave it a little cleaner under the hood appearance....that's all that I wanted out of it.
Performance wise it doesnt gain anything(imo), just prevents timing being pulled from to much hot air is all