Of course I have pics!;).
Well if ya don't know how to get to the air box of your 300zx then ya need to sell your car! Lol
Also look up how to remove the entire air box. I researched this, some unfo helped. But in the end, it took a little elbow grease to pull it out of my car! No damages occurred, nor any hum as or animals were hurt through this project!;)
So after I got the box out finally! Here is a pic of the beginning of my build.
Items bought:
Both bought at Pep boys, but can be found at pretty much any auto parts store that carries Spectre brand products.
Spectre Air filter- part# 8162
The filter is flat and fits almost perfect! It's also has reducer adapter rings. 3",3 1/2", 4"
Spectre 3" Sensor Adapter - part# 81413
The sensor adapter comes with an black plastic plate that I didn't use. You'll see why you won't if ya purchase it. Also has a vacuum port. It'll already be plugged up when you buy it. So leave that alone. Unless you plan something to do with it, which can be done later.
What I did next is lined the adapter plate on top of the sensor pipe and used a red paint pen to mark my new holes that will need to drill out. The holes that the plate has won't line up. But once you red rill new one it will be dead on with the diameter of the actual map sensor tube.
When I drilled out the holes. I had some smaller length 10mm bolts and nuts qty:4 that I used to mount the plate adapter to the map sensor tube.
So this is how it looked mounted back on the car.
The air filter was shallow enough to slip on while everything else was mounted in. This is how it looked.. And now your practically done! Here are the finished pics.
Now how much did this all cost.. $40!
It took longer removing the oem box than building this custom intake!
I did take the car out for a test drive. And it seemed to have a way better response. No check engine light. So I figured the map was happy. And now I have my own cai system and I didn't have to brake the bank doing it!
I was concerned if it rained will water work it's way up to the filter. But as you see in the pic. The tray that was originally under the oem air box, blocks the debris or water underneath or what co es through the opening of the bumper. I tested the theory with my pressure washer and recheck the filter. Not a drop got to it. So I am In the clear. Also did the test incase someone chimed in asking about that. So I had to cover my bases.
On a plus note. A buddy of mine who formerly owned a 300zx nA came by to see my progress. And dropped off me a present. He had no use for it seeming he has sold his z a couple years ago. So I was very thankful for the freebie. It's not perfect, and you can see he tried to paint it, but hey it was free!
What's so funny is that ever since I have bought the car, I been getting free upgrades, such as the original owner gave me a brand new set of Garrett t28 twin turbo upgrades with the car, a free and complete 91 service manual, and now this nose piece diffuser/air filter cover. I am loving this car each day I own it!:)