CAI: FAQ's, truth and lies...

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CAI: FAQ's, truth and lies...

Postby Mikewire on Dec Mon 03, 2007 3:16 pm

So, you want a CAI...

Discuss...

Let the party begin! :biggrinsanta: :emgift:

Ok, so straight off of ECStunings website:

ECStuning wrote:The concept of the cold-air intake is nothing new for the aftermarket tuner. Consider the internal combustion engine as a simple air pump; air is drawn in through the intake, burned with fuel and then pumped out through the exhaust. By simply reducing the restriction of air drawn into of the pump will increase the pumps overall efficiency, producing more power.
Last edited by Mikewire on Dec Mon 03, 2007 5:51 pm, edited 2 times in total.

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Postby ValveFloat on Dec Mon 03, 2007 5:36 pm

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:mrgreen:

My actual experience with this is slim to none, but they do seem to make a little power on dynos, but the gain seems to vary car to car.
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Postby Roadhog on Dec Mon 03, 2007 5:37 pm

I've been researching them alot.

A _real_ Cold Air Intake that goes into the fender well, out of the engine bay is the only thing that will gain you power.

Just sticking a K&N Filter on the end of the MAF, like Aerons (No Offense) will lose power.

Hot air = less power
Cold air = dense air, more power.

Dyno proven too.

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Postby Roadhog on Dec Mon 03, 2007 6:06 pm

Here is the great intake comparison. All of them are true Cold Air Intakes and made power over the stock airbox.

http://www.eurotuner.com/techarticles/0 ... index.html
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Postby Ramrod on Dec Mon 03, 2007 7:03 pm

All the dyno numbers I've seen for B5 S4's show very slim to no power gains. Even when the new intake is isolated from the engine bay at high boost levels. Even at modified boost levels for stock turbos there has been no real gains. In most cases they are for looks only, and only in the rare custom tuned stage 3 car have I seen them justified.

The short answer is money is better spent elsewhere in a turbo'd car.
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Postby CBCGSXR1000 on Dec Mon 03, 2007 7:33 pm

I put a blue typhone k&n cold air on my ride its in fender. seem to add lil not much but looks nice to so its all good :thumbsup:
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Postby Roadhog on Dec Mon 03, 2007 9:08 pm

Ramrod wrote:All the dyno numbers I've seen for B5 S4's show very slim to no power gains. Even when the new intake is isolated from the engine bay at high boost levels. Even at modified boost levels for stock turbos there has been no real gains. In most cases they are for looks only, and only in the rare custom tuned stage 3 car have I seen them justified.

The short answer is money is better spent elsewhere in a turbo'd car.


I think thats because of the heat soak with the intercoolers.
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Postby JayRyan on Dec Tue 04, 2007 9:07 am

Ramrod wrote:The short answer is money is better spent elsewhere in a turbo'd car.


Agreed. I wouldn't have my Evo if I didn't get it for REAL cheap. It sounds cooler than a stock airbox... :mrgreen: :laughing: it didn't make my performance any better, but it didn't make things worse either. I've always been a HUGE fan of the stock airboxes. They do really well.
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Postby Ramrod on Dec Tue 04, 2007 12:48 pm

I did put an aftermarket intake on my truck. It's pulling in warm air from the engine bay, but the larger unobstructed intake piping did give me some low end gains. Just helps me get out into traffic a bit better. But it was also $60 off ebay, so I'd say I got my money's worth. No way I'd ever spend $200 on an intake. I think the biggest reason people run them is for looks and sound. Mine can get really loud, I've debated about putting my stock one back on now that I don't use the truck on the highway.
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Postby JayRyan on Dec Tue 04, 2007 2:01 pm

Ramrod wrote:I did put an aftermarket intake on my truck. It's pulling in warm air from the engine bay, but the larger unobstructed intake piping did give me some low end gains. Just helps me get out into traffic a bit better. But it was also $60 off ebay, so I'd say I got my money's worth. No way I'd ever spend $200 on an intake. I think the biggest reason people run them is for looks and sound. Mine can get really loud, I've debated about putting my stock one back on now that I don't use the truck on the highway.


Yup. I think I paid $35 for my Evo intake. Now, I did spend some extra money to have a custom and VERY burly heat shield fabbed op for it. Next time we're out for a drive I'll pop the hood and everyone can feel the difference :D

RE: the shoutbox, check with Carbonio and see if they have one for the VR. True CAI and an enclosed CF box to go with it :thumbsup:
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