Hey, i have a quick question! If i was to put a new air intake on my 97 blazer, would it hurt it any way and/or hurt my gas mileage.

 

if you dont get a good one then it can hurt u but I did hear a rumor not sure if its true that if you JUST do a CAI then it will hurt ur gas mileage.

 

The problem is that it has to be a CAI (cold air intake), not just a new tube with a cone filter in the engine bay. A *true* CAI will be isolated from the hot engine bay heat (air sucked through the hot radiator) and will draw in outside (ambient) air. Hotter air is never better, no matter how much easier it is to get into the motor.

I did a quick synopsis of the restrictions in the air intake system a while back - Click the link below:
https://blazerforum.com/fb.asp?m=18780

I linked directly to the post in that thread with the hard information in it, but there is more information before and after that post that is beneficial as well.

 

Oh ok, so what would a new cold air intake do for my car. Better gas mileage, better horsepower?

 

CAI's will give you a little more HP....and gas mileage but the swart said....you need to have a true CAI

 

how would you make a CAI on a blazer?? there is no opening in the bottom of the engine bay near the present intake

 

I had a thought. No one mentioned the fact the HOT exhaust in the EGR pipe that goes into the intake manifold will cancel any "cold air" that enters past the throttle body.

 

wait what?

 

It's part of our emission sysytem.
I forgot to mention the PCV that enters the manifold too. I would like to believe the air in there is hot and oily.

 

so hot air goes into the intake manifold and there is no way to stop it?