Tips for installing injen intake for Coupe
Joined: Jul 2003
Posts: 2,937
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From: Encino (L.A. 818), Killa Kali
Tips for installing injen intake for Coupe
Was wondering if anybody could give me a few tips and pointers before i install my injen intake on my coupe. If there is anybody that can help. I DONT need info for sedan only coupe.
2004 Diamond Graphite G35 Coupe 6MT, Premium Package, Aero Package, DVD Nav
2004 Diamond Graphite G35 Coupe 6MT, Premium Package, Aero Package, DVD Nav
Re: Tips for installing injen intake for Coupe
Here are my suggestions:
- You may not need to remove the front bumper cover. I know you don't have to remove the bumper on the sedan--but I'm not sure for the coupe. The only reason for removing the bumper cover would necessary is so that you can remove the foam and plastic piece that would block the filter. I was able to remove those items by reaching under the car, reaching into the hole in the bumper cover, and by reaching into the wheel well.
- Some people have recommended removing the foam but not removing the plastic (or cutting a piece from one or both of those) rather than fully removing them so as to limit the amount of air flowing into the intake. The hypothesis is that some air is good but too much air--especially direct, fast moving air--is enough to actually choke the 6MTs.
- Place the car on a firm jack stand and remove the front left tire. Then remove just enough of the plastic grommets and the screw needed to pull the plastic wheel well material down so that you can get at the area where the filter will be placed. You don't need to actually remove the wheel well plastic--just pull it down.
- Removing the existing intake is fairly easy. The only thing that I had a hard time figuring out is that one of the pieces of the intake tube is connected to the car via a rubber grommet underneath. For that particular piece, you just need to pull upward to pop that piece of the tube from the grommet.
- I did not need to remove the MAF sensor connector wire from the MAF section of the tube. I was able to simply place that section of tube (still connected) in its correct place. However, the connecting wire was not long enough to reach w/o removing a couple of the plastic retaining clips that keep those wires neatly out of the way.
Sorry I don't have pictures. I hope what I'm saying makes sense.
--Steve
- You may not need to remove the front bumper cover. I know you don't have to remove the bumper on the sedan--but I'm not sure for the coupe. The only reason for removing the bumper cover would necessary is so that you can remove the foam and plastic piece that would block the filter. I was able to remove those items by reaching under the car, reaching into the hole in the bumper cover, and by reaching into the wheel well.
- Some people have recommended removing the foam but not removing the plastic (or cutting a piece from one or both of those) rather than fully removing them so as to limit the amount of air flowing into the intake. The hypothesis is that some air is good but too much air--especially direct, fast moving air--is enough to actually choke the 6MTs.
- Place the car on a firm jack stand and remove the front left tire. Then remove just enough of the plastic grommets and the screw needed to pull the plastic wheel well material down so that you can get at the area where the filter will be placed. You don't need to actually remove the wheel well plastic--just pull it down.
- Removing the existing intake is fairly easy. The only thing that I had a hard time figuring out is that one of the pieces of the intake tube is connected to the car via a rubber grommet underneath. For that particular piece, you just need to pull upward to pop that piece of the tube from the grommet.
- I did not need to remove the MAF sensor connector wire from the MAF section of the tube. I was able to simply place that section of tube (still connected) in its correct place. However, the connecting wire was not long enough to reach w/o removing a couple of the plastic retaining clips that keep those wires neatly out of the way.
Sorry I don't have pictures. I hope what I'm saying makes sense.
--Steve
Re: Tips for installing injen intake for Coupe
Oh yeah... Since you have the 6MT you must also make sure you are installing part number 1992 and not 1990.
After installing the CAI, the first thing to do is take the car to an empty freeway, get to about 85 mph and then push in and hold the clutch. If your car stalls then the CAI is getting too much air
--Steve
After installing the CAI, the first thing to do is take the car to an empty freeway, get to about 85 mph and then push in and hold the clutch. If your car stalls then the CAI is getting too much air

--Steve
Re: Tips for installing injen intake for Coupe
Install the piping first. Then tighten all the bolts that connect it to the car.You do not need to remove the Bumper, like the instructions say. Just remove half (the driver's side) of the under carrage cover. That way the foam and plastic can be pulled out from under the car, and the filter can be installed from under the car also. I did not need to jack up the car. Hope this makes sence. I'll help you if you are willing to drive to Garden Grove Nissan (Quality Nissan) in Socal.
Joined: Jul 2003
Posts: 2,937
Likes: 0
From: Encino (L.A. 818), Killa Kali
Re: Tips for installing injen intake for Coupe
Hey thankg alot are there any other tips. Zen thanks for the invite and help i think i can do it on my own. I install a dinan cold air intake on my 3 series. i just wanted some info before installing it. But some said something about stalling problems. Hold on please explain further
2004 Diamond Graphite G35 Coupe 6MT, Premium Package, Aero Package, DVD Nav
2004 Diamond Graphite G35 Coupe 6MT, Premium Package, Aero Package, DVD Nav
Re: Tips for installing injen intake for Coupe
Yeah it's easy. Just remove the foam before you remove the plastic. the foam needs to be wiggled out. There are 3 screws holding the plastic. Before you start turn the streering wheel to the far left. You will need to remove some of the plastic toward the front of the wheel well to get to a few screws (just enought to get your hand inside) . It's better than removing the bumper. The stocked air box needs to be opened up too . I can't really explain it, you just need to do it. Very easy! I did it in less than an Hour and I have not stalled yet. Oh! make sure you remember the position of the mass air flow sensor.
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