We began at noon and as the day progressed the ambient temperature went up four degrees. It appeared that each degree of temperature increase ambient resulted in about a 4HP loss of power - definately a rough estimate since this observation was spread across the testing of each intercooler -- but the fact that they all made just about the same power with slight decline in power as the ambient temperature went up, it was our conclusion that there just wasn't much difference between the aftermarket intercoolers and the only clear distinction was with the stock intercoolers having ~20HP less. It is far too easy to say "with all things being equal, 'x' intercooler is the clear winner", but the fact of the matter is that it is near impossible to keep your test environment static with the exception of what you intend to change. In our tests, the temperature went up a few degrees and the power output varied a few horsepower and ft/lbs between the different intercoolers, but it is hard to say if the lower power had more to do with intercooler design or with ambient temperatures. *shrug* I guess when things get this close though, you can probably just rest and say that they are all pretty much the same. And some video for you bandwidth kings. After further tuning of Lorca's PE powered TT and increase in boost pressure to 24.4psi, we produced these dyno results:
A note on the prototype water-air intercoolers: This is a design we wanted to entertain to see what we could get out of them but based on the results we feel that they need to be further engineered. They were tested during the hottest part of the day and while they yielded the smoothest power curves, they actually produced the least power, 9hp less than the UAS, 7HP less than the Z1, and 4HP less than the Stillen. The Z1 sidemount intercoolers will be released this wednesday. Stay tuned..
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