Horsepower or not, a well built insulated CAI has some benefits. We all know cooler air provides more oxygen and that hot air can cause a loss in power. If your engine bay temps are around 250-300* or so at full operating temp (while air temps are already 95*) than I think a well built insulated CAI could provide some help for sure. Whether its a 5* or only 20* temp drop from the CAI, that'll be well worth it. I could write a endless list of things of how a motor could benefit from this temp drop. 5*-20* temp drop is just hypathetically speaking, the air temp your motor is pulling in whether its hot engine bay heat or close to ambient temp would be a direct result of how well your CAI is sealed and constructed. Horsepower may be hard to make but a steady cooler air temp is definitely achievable and in my book is the best benefit. If you want more power than install more power adders which in that case cooler air would be even more essential.
