Yes, Rick is that nuts. Me, not so much. Then again, when on a roll, Rick accomplishes by himself what it would take 10 normal drunks to do in a month.
Ok, I remember this calculation. For most of us heat may not be secondary. The PCM will cut timing (and fuel?) for heat. I'm not sure at what temp it starts cutting timing (120*?, 90*?) and how much as it gets hotter. This would be really good to know. As a follow on, roughly, how much timing equates to how much hp? Some have moved the intake air temp sensor towards the filter element on the tube to alleviate this problem. You're actually just fooling the PCM as to the actual intake air temp or due to the rate of intake it really doesn't make any difference... How fast does the IAT sensor react to temp changes? Given the intake flow, the hot air from heat soak should be gone in virtually an instant so this should not be a factor? I guess it is true that some of the PCM's reaction to IAT is for emissions but it's a fact that hot air is less dense and would require a change to fuel and/or timing. It's a fact that once my IAT goes up (Mopar CAI) it does not come down immediately as I rev the engine or take off from a stop. I suppose this is due to the CAI (Mopar in my case) sucking engine bay air. The engine bay air heat shield on the Mopar sucks. The AFE Stage II seems to have a much better heat shield/box than the Mopar CAI and this was a major factor in my planning to get one. How has the Hammer addressed this? Let's say for a Magnum. Do we agree that due to the volume/rate of intake air, that moving the IAT sensor should not make a difference? If not, why? What is the timing/fuel adjustment curve due to IAT sensor temp increase for the 6.1L? Momo, I'd suggest the following to try for the $500 testing offer. Set up a semi private forum to hash out the test parameters with a small set of people. Naturally Hammer and any other CAI manufacturers (in the test set) would be included. Once the test set of CAI's is determined and the parameters for the test is selected, present it to the general membership for comment/acceptance. I'd like to see IAT temp as a measurement/factor this time around. Then run the test. I suspect the cost would be entirely dyno time with everything else donated. I'm thinking $500 may not cover it and solicitation from other mfgs may be needed. Unfortunately, free CAI's that are not returned may be seen as influencing the test.
1.) If our calculations are correct then the issue is related to the sensitivity of the IAT/Computer not the actual air temperature. Another consideration is radiant heat from the engine, re-locating the IAT closer to the filter places it in a cooler area of the engine bay. 2.) A box (may) influence temperature but at what cost to flow?... 3.) We know through previous testing ad nauseum, re; Rob AGD, Done, Rev Hammer, and others through testing published on the other LX site that the engine bay is very well ventilated once underway. True, the first (split second) of air entering the intake may be heated but within milliseconds that air is replaced by the cooler ambient air. But in the real world, how will this really impact the typical driver? and as a manufacturer is it in the customers best interest to add significant cost to that intake ($20-$150), risk potential damage to the filter by drawing outside air (see below) vs the benefit derived?? (NOTE) Pricing has a huge impact on the saleability of an intake.. Cost/benefit, is a ($50) device really worth the minute benefit that might be derived?. I sure hope the competition isn't reading this...lol Our assessment was if, you are truly in this form of a competitive situation (drag racing at extreme levels) then you are probably capable of fashioning said ductwork. Again in real world situations what else will said ducting allow into the engine bay, and how does this impact the cost effectiveness and use of equipment ie. frequency of cleaning and risk of potential damage to the filter medium by flying objects (ufos..lol). Our tests found significant deterioration of filtration not to mention a relative zoo of small animals and local fauna!..lol Again, as a manufacturer longevity, ease of use, quality of filtration over useful life etc..do have a calculation compared by, in our opinion, the relatively minute improvement that (may or may not) be found by adding such devices. We offer this as an option due to demand not because we can document any performance improvement. Example; when installing other devices such as catch cans and/or nitrious, may facilitate in better placement of these devices due to relocating the IAT. Sorry, i fall off the truck on this one and would need to differ to our mad science and engineering dept. And campaign the membership for donations, possibly raffling of said test intakes etc,. as prizes?? Have members donate unwanted parts to a online flea market where said funds would be used to fund the testing. Have asst. members sell there services to mature ladies??..lol :censored:
I would also add the best way to manage engine heat is with a lower temp thermostat and/or manual fan control.
