I noticed that the Injen setup dynoed better than the AEM cold air. So, does that mean that cold air (from the grill) isn't as important that then length of the pipe?

We have a lot of rain where I live and I started thinking about running through deep puddles and such--a very real thing. Beginning to think a short-pipe might be better in the long run. Any ideas on the downside of cold air?

BTW, the 1500 engine is timing chain and not belt, correct?

Thanks.

Chain yes.

well the short pipe in theory gets more hot air because it sits in the engine bay, as the cold air runs right behind the fog kight which is should get more cold air than the short ram. even though it might rain in your area the only way to damage you engine would be if the water you went through is as high as your stock fog light opening and you went full throttle that would suck it into your engine the bye-bye time for a new motor, so any intake should be fine just dont go driving through lakes.

The short intakes I have seen also take air from the fender well behind the fog light area. They make more power because they have fewer bends to slow the air, however the difference is minimal.
ken

what about those outerwears that are used on atvs i dunno if people use them on cars i think they do but not sure well anyways those go over the filter and are waterproof that way you can have the cold air and it will be water proof

there is something called water injection that people do to help stop detonation in boosted engines. I don' think it could cause too big of a problem because the engine is running pretty hot and as long as you dont pour water into your intake it shouldnt make a difference.

I think that the air filters wouldn't allow for a large amout of water to get in at one time.

My dad made a cold air intake for his miata that sits 3 inches from the ground and he has no problems with it.

im going with the injen. i've already got two friends that have CAI and had their engines stall on them while it was raining pretty hard, and i live in socal.

oh yeah, and this "short ram" puts the filter below the headlight housing as well.

Quick note on the water injection deal... cooling is the smalest of the reasons for water injection water injection (Originaly used on airplanes) boost compresion ratio.. basc theory is water injected as a mist.. not unlike fuel, and water is not compresable like air.. this action like a dome on a piston.. I think the cooling effect that it would have on an air charge would be negated by the increase in compression. and could in most case's cause more detonation.. And the amount of water they are talking about sucking into an intake isnt much.. 1 cup of water in our small bore motor would bend if not shatter a con rod.. it doesnt compress you might as well have a cup of lead in there.. valves sealed piston comming up..somthing is gonna give.. and it isnt goign to be the water.. I live in FL and we have ALOT of this CAI problems.. they do have a fitting that fits in line that pops open to let unfilterd air in before the water... and I know people down here swear by them. We get terential downpours daily all summer in the afternoon... and everythng is flat and floods..

i have the AEM and have never had any probs with it....and just recently, to add even more hp, i removed the foglight cover and replaced it with grill material, so it gets ram air directly to the filter! :wink:

I noticed that the Injen setup dynoed better than the AEM cold air. So, does that mean that cold air (from the grill) isn't as important that then length of the pipe?

We have a lot of rain where I live and I started thinking about running through deep puddles and such--a very real thing. Beginning to think a short-pipe might be better in the long run. Any ideas on the downside of cold air?

BTW, the 1500 engine is timing chain and not belt, correct?

Thanks.

My feeling is that the AEM is primarily designed to pass the CARB certification test, what with the multiple bends that closely mimic the stock intake. Note that neither Scion nor AEM seems interested in producing any power numbers for this product.

The Imjen obviously doesn't have the convoluted bends of the AEM, and seems to provide a modest power increase.

I don't think that the air temperature will be all that different. The AEM's filter is a few inches lower than the Imjen, but both filters are in a location where the air isn't warmed by the radiator. If anything, the AEM will run warmer in summer when the air temperature above the pavement is several degrees hotter than that at grille level.

It wouldn't be all that hard to instrument a couple of cars and find out for sure. Any cooking store can provide digital cooking thermometers with remote sensors for about $20. Just tape the sensor to the outside of the filter, tape the thermometer to the hood in view of the driver, and go for a drive!

Water ingestion seems to be a result of water buildup in the intake itself suddenly being pushed into the cylinders or, less likely, of the filter itself being submerged. The engine can actually take a trickle of water (say, a liter per minute) without harm, but if the intake is suddenly full of water you will have problems! The Imjen filter location is certainly less likely to become submerged than the AEM location.

An ideal filter setup would take air from the upper "grille" location, duct it into an airbox containing the filter and thence into a short intake. However, this would be a lot more expensive than just producing a pipe and filter to hang on the throttle valve!

George

there is something called water injection that people do to help stop detonation in boosted engines. I don' think it could cause too big of a problem because the engine is running pretty hot and as long as you dont pour water into your intake it shouldnt make a difference.

I think that the air filters wouldn't allow for a large amout of water to get in at one time.

My dad made a cold air intake for his miata that sits 3 inches from the ground and he has no problems with it.

Here's a pretty good primer on H2O injection:

http://www.rallycars.com/Cars/WaterInjection.html