unimpressed by the gains in a drag set up. A general rule of thumb is you get an increase of 1% HP for every drop of 10* intake air temps. That would mean on a 500 HP Z, you would need a drop of 200* to pick up 100 HP. Or on a 1,000 HP car, you would need a drop of 100* to pick up 100 HP. If these gains or anything close were being achieved in repeatable real world experience, I think the product would be in greater use and demand. It would be interesting to get before and after intercooler temps using an intercooler chiller. I'm sure it has to be of some benefit, but I think your money would be better spent than having to buy two units (one for each intercooler).