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I never had that one but I had the one for the ram air hood on a trans am I had and it worked great and looked great. That being said isn't you stock intake or your iroc basically the same set up?
I've just modified my stock air box by cutting out the baffles below where the air filters sit. The box on hawks has that duct work below it. I was wondering if that made a difference or not? I've seen some cars that have ducting (from the hardware store) going behind the fog lights up to where the filters sit.
I made my own ram air boxes, similar to those offered by Hawks, from aluminum sheet. They seal the openings in the front of the car to the air filters. At the same time I did the high flow air lid modification detailed by 1bad91z. You can find his thread on this mod by searching"high flow air lid" on this site.
I don't know how much difference this mod and the ram air would make on a stock engine. But on my heavily modified 355TPI, I noticed an impressive difference. Especially at higher speeds. 1bad tested the setup using a pressure transducer mounted just before the throttle body and at 100mph, he measured, if I remember correctly, .3 bar, which is about 4.5 psi.
When you look at the design of the car's front bumper, with the openings where the fog lights sit and how they sit just below the air filter housing, it's as if someone on the design team was already thinking the same thing. Of course, for best results, you want to remove the fog lights.
EDIT:
Correction: 1bad91z measured 107Kpa using a 2 bar MAP sensor. That is equilivilent to 15.5psi. Understand, of course, that atmosphere is about 14.5 psi, so we're talking about 1 psi of added pressure. It's not alot but it's better than nothing. Especially when it's fresh cold air.
Thanks for the advise. How many push pins do you have to remove to get all the stock radiator baffles out of the way? I got the hawks boxes and I already gutted the stock airbox. Seems like there is a lot of radiator baffles that need to be removed before I can put the hawks airboxes in. I hope this won't cause any over heating issues.
The intake on my car is stock now so I don't expect a dramatic increase in performance. I expect that I will get some though. I already have a BBK 52mm throttle body and K&N airfilters. I also am in the process of buying some aftermarket intake runners, base and, ported plenum from some members on the website. With those intake mods and the exhaust mods that I have already done my car should move pretty for one that has an internally stock engine.
Originally Posted by ASE doc
I made my own ram air boxes, similar to those offered by Hawks, from aluminum sheet. They seal the openings in the front of the car to the air filters. At the same time I did the high flow air lid modification detailed by 1bad91z. You can find his thread on this mod by searching"high flow air lid" on this site.
I don't know how much difference this mod and the ram air would make on a stock engine. But on my heavily modified 355TPI, I noticed an impressive difference. Especially at higher speeds. 1bad tested the setup using a pressure transducer mounted just before the throttle body and at 100mph, he measured, if I remember correctly, .3 bar, which is about 4.5 psi.
When you look at the design of the car's front bumper, with the openings where the fog lights sit and how they sit just below the air filter housing, it's as if someone on the design team was already thinking the same thing. Of course, for best results, you want to remove the fog lights.
EDIT:
Correction: 1bad91z measured 107Kpa using a 2 bar MAP sensor. That is equilivilent to 15.5psi. Understand, of course, that atmosphere is about 14.5 psi, so we're talking about 1 psi of added pressure. It's not alot but it's better than nothing. Especially when it's fresh cold air.
Last edited by yaj15; 06-19-2012 at 02:22 PM.
Reason: content
Well I finished installing the Hawks intake boxes on my car. Was a real ordeal to install them. I wish I just would have got some HVAC ducting from home depot and made my own intake track. But I already bought the parts and I didn't want them to go to waist so I put them in. Next time I have the chance to drive my car I'll let you know the difference in performance.
I made also some ram air pressure measurements between plenum and air intake(before tb) five years ago.Some results:
When I made pressure measurements, there was +6kPa at air intake duct at part throttle(3000 rpm,4rd gear, and ~95mph).At wot ~6500rpm and +140mph at 3rd gear there was -2kPa vacuum.I made my mesurements with VERY accurate differential pressure transducer.
I had the chance to drive my car and test out the Ram Air Box. Other than the 52mm throttle body, gutted air box (with the ram air boxes attached to it) and K&N airfilters all the induction is stock.
The throttle response improved a great deal. I can hear it sucking in air when you step on the gas and get on the freeway. I don't know how much power was added but the engine is smoother all through out the rev range. From 4000rpm up to the redline (5500rpm) the engine dosen't strain as much. It has a little more top end power now. Thats where I have seen the most gains.
This should really help out the car when I finish doing the intake mods
any body have pics of there own custom set up to get an idea?
Sorry. I'm too self centered to take the time to photograph my work anymore. I can only say that I used cardboard to make patterns of all the pieces and taped the pieces together then, when I had the size and shape where I wanted it, I cut the tape to separate the pieces and traced them onto a sheet of 20 gauge aluminum, adding 3/8" to the side panels for bending over to make mating surfaces. Then I drilled and riveted the pieces together using Gorilla Glue to seal the seams.
I had to do a little fine trimming for fit but it really went together well. Then I sealed the ports that I had made to the air filter panel. I had already cut away the air intake housing below the filter panel. I also performed the modifications to convert my air filter lid into the high flow lid with 4" hose to the throttle body. I also noticed a solid improvement. Especially from 5,000rpm to my 6,900 rev limit. The affect of the ram air is of course dependent on speed to create pressure in the ram air ports. I think the ram air and high flow air lid are a big part of my car's fantastic 50-100 acceleration.
I got a hacksaw and a 2 bent ac ducts from home depot, chopped the boxes in the parking lot. Noticed a definite increase in pull and throttle response at speeds above 40-50 mph. Combine that with K&N's and a ?? I forget the name, some little metal piece that cost me an arm and a let, smooths out the air to each intake.
I used a aluminum sheet from home depot forgot the thickness easy enough to bend using just a straight edge with my foot as the weight but not flimsy. And some hvac vents for the scoop portion the round parts were not used just unbend from the round portion and hammer flat that will be were you rivet to the square portion. Only cut out the very bottom of oem air filter box so you can slide new aluminium on the outside of plastic to secure with bolts or rivets. Rivet it all together and square used some leak fix spray at all corners and over laps and painted over it all.
My bumper was already off and when I saw it all openly exposed and the flaws is when I did this mod. I trimmed the plastic piece tha was there directing air to radiator so I can re install it with cutouts for air ram. I figure some air will go to air dam some air will go to radiator.
06-05-2012, 05:39 PM
