DarkRain0660

Hey guys been around for a while now watching the daily threads come and go and finally decided to leave my other projects alone in order to start on my Z. So first thing on my list after seeing the ARC intake box was to have something similar for much cheaper. So here is my first fab part for my Z. Only concern is possible heat soak but i will use insulation material later to fix that. You may like or you may hate but opinions are welcome all the same. Made for less than 100$ and start to finish in around 4-5 hours list of materials as follows

List of Materials

Sheet metal - 50$
Cardboard ( To make template ) - Free (had lying around)
Cut off wheel - 24$ harbor Freight
Assorted nutz and boltz - 6$ Lowes
Vice - Use somebodys if you dont have one
Any color marker to draw out template - 2$
tape measure - You should already have one ( shame on you if you dont )

process show below

DarkRain0660

2nd Part

DarkRain0660

3rd Part

DarkRain0660

So since i finished it i have cleaned up the entire box as well as shaved all the bolts down, shaped up all the ugly metal overlaps and fixed all the rough edges and dents from me banging it around the first go around. Color change on the way soon ( dont like the burnt orange but it was on my shelf in my garage at the time so ). But i will make a better one as soon as i perfect every detail of it on this one first.

mkiv20vt

Looks cool. Any before dynos?

92K1500

iTrader: (1)

Did intake temps change any?

DarkRain0660

I wish I could have done a before an after pull to see the results but the nearest dyno is 3 hrs away so that didn't seem worth it until i have more data.

I'll know the air temp change later this week as i ordered the Scantool MX link to monitor the changes through the engine while i mod the vehicle. UPS should be dropping it off tomorrow afternoon then i can do some real time logging and see the difference.

But in all honestly I thought that riding around for an hour or so would make it extremely hot to the touch due to head soak but popping the hood after a good "spirited" run i discovered it was barely warm to the touch. Which makes me believe that the front bumper is doing a great job of diffusing sufficient air up to the intake. More info on this later after i log a few drives with it on and off

mr. sparco

iTrader: (13)

Should use the box as a negative mold for a composite one. Will block out the heat much better.

DarkRain0660

You read my mind. Seen that video a while back and bought everything needed to do most of the car so I will be attempting that as well as a OEM style hood and a few other parts as soon as this winter comes and goes. For now it's all air flow. As soon as I'm pleased with some decent results I'll move onto exhaust flow ( also to be fabbed from scratch ) then suspension and wheels. So I have my work cut out for me over the next few months. Never plan on selling this car so I can take my time and do it right.

waldo36

iTrader: (2)

I don't think that gains/losses would be noticeable on a dyno by just putting a box around the filter. The air may flow a little better to the filter, but not enough to affect the curves or A/F ratio to matter.

DarkRain0660

He's right now that I've had a chance to look at some data from the ecu. So far my intake temps are only down a few degrees. I need to do some more with and without rides on a day with steady outside temperatures before I can confirm and post pics so I will try and have that done by the end of the weekend. I can say throttle response is slightly better around 60 to 70 mph and on up but no improvement at any lower speeds unfortunately. So I may try to inclose the box further and work on better channeling the air from the front bumper directly to the induction box somehow. Updates will follow soon

mr. sparco

iTrader: (13)

You inspired me to make a 4" ID composite intake tube. Now I'm going to need a tune.

saywat?

so wats the difference between oem airbox and this one? jus for fun?

waldo36

iTrader: (2)

Ya I just now saw where you have a second hole on facing towards the radiator. Definitely close that hole up because the air you have coming in from the front could swirl around and right back out of that side.

Maybe leave a small hole on that side, but fully enclose the rest of it. It just seems to me with that other side hole, your good air is coming in and then back out.

DarkRain0660

That's the plan. Definitely gotta enclose the back of the box where the intake tube comes down too

DarkRain0660

I want to see a pic of that composite tube installed btw !!!!! But the difference between mine and the OEM is nil right now until I data log some more and make enough changes to possibly see gains...so it's trial and error right now and I never have to look at anyone else's car and see the same intake

mr. sparco

iTrader: (13)

Working on a matching fg box before install.

DarkRain0660

Looks like it's coming along , any picks of the other half yet or are you leaving it open?

DarkRain0660

I've been busy cleaning up my exhaust and cutting out my rad diffuser plate

mr. sparco

iTrader: (13)

I simplified it so it would just be a flat lid on top.