Short Ram or CAI?
More Black on Black Crime
Joined: Dec 2000
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From: San Diego, CA
Senior Member
Joined: Jun 2002
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From: Cal Poly San Luis Obispo
The thing I like about my icebox is that you can get to the filter from the stock location and its tested against hydrolock. I have just the filter and ice box not the short ram but even then it is still a bit more expensive.
Team Teg Project Car
Joined: Jun 2002
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From: Orlando, FL
Originally posted by 98SmeLS
Putting cold air into your engine makes more power because cold air is denser than warm air. That means more oxygen, more combustion, more power.
Putting cold air into your engine makes more power because cold air is denser than warm air. That means more oxygen, more combustion, more power.
Rather going from SRI to CAI simply works like changing your intake manifold, you're swapping where you want your power. The CAI is going to give you the extra power at the AEM hump as you can see in the dyno. The SRI is going to give you extra power way up top (higher than most of our tegs will ever rev), up past 8.5k. At that range, the CAI's power just drops off. So essentially it has to do with the velocity of the air coming into the engine and the effect of the length of the tubing... the temperature differences aren't enough to make any sort of real world difference.
Wannabe yuppie
Joined: Dec 2000
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From: Madison, WI
Your "moving power around" theory doesn't stick here. The "AEM hump" comes from a resonance supercharging effect because of the length of the pipe. But as the dyno that's been posted all over the place shows, the CAI doesn't loose any power to the filter on a stick.
Yes, when you increase breathing capacity with piping length or manifold size there is generally a shift in the powerband, but horsepower is not like matter in that it can be moved and not created and destroyed.
Yes, when you increase breathing capacity with piping length or manifold size there is generally a shift in the powerband, but horsepower is not like matter in that it can be moved and not created and destroyed.
Senior Member
Joined: Aug 2002
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From: Toronto, Canada
Originally posted by Louse76
The CAI doesn't give more power because of colder air. Your engine bay is actually pretty cool with air moving around in there etc. If it was giving more power because of cooler air, then you would see a gain accross that whole dyno.
Rather going from SRI to CAI simply works like changing your intake manifold, you're swapping where you want your power. The CAI is going to give you the extra power at the AEM hump as you can see in the dyno. The SRI is going to give you extra power way up top (higher than most of our tegs will ever rev), up past 8.5k. At that range, the CAI's power just drops off. So essentially it has to do with the velocity of the air coming into the engine and the effect of the length of the tubing... the temperature differences aren't enough to make any sort of real world difference.
The CAI doesn't give more power because of colder air. Your engine bay is actually pretty cool with air moving around in there etc. If it was giving more power because of cooler air, then you would see a gain accross that whole dyno.
Rather going from SRI to CAI simply works like changing your intake manifold, you're swapping where you want your power. The CAI is going to give you the extra power at the AEM hump as you can see in the dyno. The SRI is going to give you extra power way up top (higher than most of our tegs will ever rev), up past 8.5k. At that range, the CAI's power just drops off. So essentially it has to do with the velocity of the air coming into the engine and the effect of the length of the tubing... the temperature differences aren't enough to make any sort of real world difference.
High school thermodynamics man, PV=nRT. Why do you think an intercooled turbos make more power than non-intercooled. Temperature is inveresely proportional to density. Why do u think the call it a "COLD" air intake.
The SRI will make power way up top, if the intake piping is very large. Smaller pipes give higher velocities, so the powerband is going to be different for different size pipes. Large pipes will work well up high, small will work well down low. Just like exhaust piping.
CAI high longer pipes and more bends than SRI. That, and the fact that it has to deal with water, is the only disadvantage vs SRI.