I made my own cold air kit. I used an aFe dry air filter, 4" of stainless tubing a 4"x4" 45* elbow, a 4.5"x4.5" 45* elbow with a reducer 4.5" to 4". I cut the tubing to about 12" and greased the inside of one of the elbows to move the tubing in and out easier.

I just kept the OE air box but used a holesawl to swiss cheese it to allow more air flow in. Yes I know there is some debate ie it allows hot air to be sucked in etc but I dont care if it was crapping icecubes there is only so much its going to gain me. Anyway here are the pictures.
Before & after.

 

To be honest on a turbo diesel as soon as that air hits the turbo it's heated anyway so sucking in air from the engine compartment is not a big deal. I run a bhaf without and shielding from the motor.

 

but if your sucking in air that is 40* cooler then you will see an EGT drop of 40*.

 

I like no matter how fast i turn the key she starts up
I like every time i stand on it im always looking at a cloud behind me!
I like when my wife rides in it she laughs and bounces around in the cab
I like how even the newer cummins guys give me a thumbs up in town
I like how my father says "Sure like your truck Jay" every time i stop by (even though he got a 05)
I like most everything about these old trucks

 

I love the fact that I slid my 90 sideways through some 8x8 fence posts over a log n into a bunch of greasewood trees n I opened the door climbed out, waited for a tow outta there got her back to the road inspected it n drove her home, t-case wouldn't come outta 4wd n frame was bent but me n my passenger walked away without a scratch.

 

What do I love about my first gen? OK here it goes!

Its the first truck I ever rode in and was bought by my dad when i was 3. I get compliments almost every time I drive it to town. Nails aren't as tough at this truck. I've never hooked up to something that it couldn't tow with ease. I just look like a plain bad *** cruising through town, especially when them wannabe lifted chevy's roll up next to me and I ask them why they lift a truck that's never seen the mud as they roll up their windows in envy I turn back in black on and toss my shades on and personally i feel sorry for them.

It reminds me every day of the good old days when people had respect and humility. I can't drive that truck without buying some peanuts and a coke to toss them in. It just flat out makes you want to make a coke float with some vanilla ice cream. You cant take a ride in my truck unless you like blasting Eagles and AC/DC over the alpine stereo system.

It was my first truck and I have always loved it and the same goes for my son. Its going to be his first truck and every time I drive down the driveway to leave he starts crying because he wants a ride in his daddy's truck but I know he will be driving it around the yard with me in the passenger seat in a few years like I did when i was 6 with my dad. This truck was not only built to be tough but it makes so many good memories! I will never forget the day I let my son take the steering wheel and we drove around the yard laughing the entire time the same way I did when I was 3 with my dad.

So long story short my old 12 valve and I have a long history from diapers to college. It runs like a dream and it never has had a single problem. Built like a tank I commandeer the road like a man should. l will never regret the day I asked for my first vehicle to be my dads dodge.

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We are all on the same page on this one! You can't drive it without some shades and even when your wife is in the car because your so bad *** you give girls thumbs up for being almost as sexy as your truck!

But your wife doesn't mind you doing that because her man is driving a truck that so bad *** that all the women stop and stare knowing that the man driving that truck is a MAN instead of their girly boyfriend that thinks *Swag* is a cool thing.

 

That's an epic post if ive ever seen one...

 

It don't get no better than the fuel milage and beastly stance. I have 3 inch lift and 33s and love the way mine sits higher than most lifted trucks in town. Plus, nobody else has one by me. I also the simplicity and roominess of the motor in the engine bay. First gens forever!!!! Screw plug in power!

 

I love the fact that a can fix my truck if it breaks down unlike the new ones. Its simple and easy to work on. I love that its loud and has brute power. I love that people stare as i cruise by because these trucks are becoming rare in restored form.

 

My 93 looks like a TRUCK, sounds like a TRUCK, and rides like a TRUCK ! I love that I can figure out how it works and can fix it when it breaks. I love how with some some simple mods that are mostly inexpensive and some IP tweaks I can blow off much newer and supposedly more powerful cars and trucks. I really love how it can be a neverending project that keeps me looking for more performance,comfort and milage. I love always getting " Hey man thats a really cool old truck, want to sell it " every time I park it away from the house. So yeah I love my TRUCK !