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"Like button hit"

 

Thanks!

 

So what do you think is the relative effect of the larger opening versus the insulation?

 

*clicks like*

Using Gold foil or heat reflective wrap also would do a wonderful job of dispelling heat away from the intake. I am, of course, referring to Tavarish on Youtube's Turbo or Twin Turbo Lamborghini Gallardo setup.. won't link it to here because a Blazer is not a Lamborghini, but, works very well for directing heat elsewhere.

 

Nice. Now it looks like our 1st gen air intakes. Pretty much what they used to be before 1995.

 

I really like 1st Gens. (Digital Dash! And how they look..) My air intake always used to get cut into by the radiator fan on them. Not sure why that is.

OP, you see noticeable performance gains from this nifty and awesome modification?

 

In my opinion, simply opening up the intake with the 4 inch opening only solves half the problem, and not worth it.

At this point, I'm almost finished with a frame-off restoration, and the truck is in the shop now getting a full paint job. When I get it back, I'll be doing the final finish work and tuning with HP Tuners. Considering that my "stock" airbox was 20 to 25 degrees above ambient, on an 85 degree summer day the IAT's would be at least 105, and that's huge. The next time I open my HP Tuners I'll find the spark advance table and how it's negatively effected by increased IAT. IIRC timing starts to get pulled beginning at around 80 or 85 degree outside air temperatures.

Thanks for the like! Yes, intake tract insulation has been used on high end cars and race cars for years. The reflective HVAC insulation serves the same purpose reflecting radiant heat, as well as insulating.


It's hard to say, I did so much to my truck. It's a 2001, and besides the modified intake, it's got a CPI cam, beehive valve springs, and a Magnaflow Y-Pipe and full exhaust with no cats.

Overall modifications are mild, but in addition to the above, pretty much everything else that wears out on these things has been replaced, including new OEM fuel pump and upgraded OEM MPFI spider injection. A huge change was installing an 8.5 inch posi rear with different ratio, so overall performance is not even close to what it used to be.

 

Do you have any gas mileage figures--before and after the Air intake mod?

 

BTW, I set my Ultra-Gauge to tell me the intake air temp and I can confirm that even after only a 5 minute ride with the outside air at 3'C (37'F) the inlet air temp was at about 9'C (48'F).

For a system that is supposed to bring in air from the outside, there must be a lot of heat radiated inside the engine compartment. I'll have to look up if there is any information on mileage and other performance improvements with using colder air.