Does anyone have a cold air intake on their third-gen? If so what kind is it, how much power would I gain, is it a good idea? Any info would be great. Also how much do they cost?

 

I modified the air intake on my 89 T/A. The airbox snorkle was obstructed and changing the position just allowed more warm under-hood air to be inhaled. I had to unbolt both the airbox and gas vapor canister to move them slightly, then I ran some 3" diam flexible aluminum tubing from the snorkle into the front of the fender nearby and down to the bottom where it is open to the outside air, used about 2.5'. It was the closest place to get cold air from. I think the flex tubing was about $8 for 4' at a local hardware store. I'm thinking of adding a scoop to reach down into the outside airflow and route it up to my intake tube. Inside the stock airbox I have a high airflow, high efficiency oil coated filter of my own design. Between the butterflys on the throttlebody I have an airfoil to reduce turbulence from air hitting that center section. That was homemade too. It all seems to be working fine. Total cost something like $18. Most of my driving is around town, not racing, so I can't say how much this stuff helped. I believe it did though.

FYI: I've heard figures like for every 2° drop in incoming air temp you get a 1% increase in HP. A 10° drop in temp raises the oxygen concentration in the cooler air 3% above what's in warmer air. Under hood air is much warmer than 10° above outside air so there's a big difference in oxygen concentration. Also, according to figures and measurements found online, I calculated that without the airfoil on the TB, there is about 3 lbs backpressure generated by the incoming air hitting the center of the TB at high rpms. An airfoil will reduce the drag to 1/2 or 1/4 that much. That center part of the TB takes up about half the total TB area so it seems worth it to cover it with something smooth. I'm thinking of further reducing turbulence by smoothing out the grooves in the "flexible" parts of the stock, black air duct that connects to the TB. The MAF has its screens in place. I hear it flows more than enough as is.

 

since you have a camaro you can gut your airboxes!! you can get alittle gain from that.. good luck..

some guys i know take their foglights out for even more flow.