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Injen CIA=missing at Idle

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Old 11-08-2003, 10:42 PM
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Scanman
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Default Injen CIA=missing at Idle

installed Injen CIA about 2 monthes ago and imediatly noticed an erratic idle (yes i diconected the battery). This is simply not worth the minamal HP gains so I decided to remove it and take my losses.
Before doing this I thought I'd try the shorty set-up and see what would happen. Well, it idles perfectly now and sounds way better because you can here the intake now.
On top of this my seat of the pants impression is that it actually makes more power. Of course its 32 degrees out side and the tires are cold, fun trying to get traction with VDC off.


CS Track
Borla dual
Injen
Grounding kit
Old 11-09-2003, 08:59 AM
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AP_G35C
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Can you describe your problem a little more fully. I think my G coupe is doing the same thing. Did the car ever die??
Old 11-09-2003, 10:13 AM
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reiver
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shorty set up?
Old 11-09-2003, 10:43 AM
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ares
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guessing he means the short ram intake configuration, similair to the stock layout, eliminates the concern of hydrolock from having the inlet low to the ground, but still has a more efficient filter and tube design.
Old 11-09-2003, 12:23 PM
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LeighJr
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Mine misses also its really annoying cuz it makes me think something is wrong. let me know if you figure it out.
Old 11-10-2003, 04:15 AM
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FLY BY Z
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In the CIA isn't it reffered to as missing in action as opposed to missing at idle?
Old 11-10-2003, 02:35 PM
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eskimo
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Originally posted by Mr. Potato Head
In the CIA isn't it reffered to as missing in action as opposed to missing at idle?
Good call.
Old 11-10-2003, 04:24 PM
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cheeves
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Thought this was a thread about a new Chuck Norris movie
Old 11-10-2003, 05:36 PM
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mytalon
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What is it exactly this missing? Is that why my idle is erratic?
Old 11-10-2003, 05:40 PM
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jesseenglish
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I would assume that the O-ring on the black plastic piece that contains your MAF is not seated correctly. A CAI should not cause your engine to misfire.
Old 11-10-2003, 08:42 PM
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Scanman
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Ooops, CIA , my bad, what a dork.

Anyway, the missing is like this. It idles smooth, tach needle remains steady for about 10 to 15 seconds and then will suddenly drop a couple hundred RPM and the engine will sputter for a couple of seconds and then come out of it, and then do it all over again.

Never did this before the Injen, and now that I have the short ram set up (Injen MAF still retained) it idles smooth as glass.
Old 11-10-2003, 09:10 PM
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mytalon
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Originally posted by Scanman
Ooops, CIA , my bad, what a dork.

Anyway, the missing is like this. It idles smooth, tach needle remains steady for about 10 to 15 seconds and then will suddenly drop a couple hundred RPM and the engine will sputter for a couple of seconds and then come out of it, and then do it all over again.

I have this same problem. Is there a fix with out changeing to short ram.
Old 11-10-2003, 09:25 PM
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ESP350Z
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does the AEM intake cause the same problem???
Old 11-19-2003, 11:16 PM
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jimster716
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I have, er, had the same problem with the Injen CAI. I don't know how or why but the problem disappeared after switching my motor oil. I just noticed it today while standing at the rear of the car chatting with work buddies while the car was warming up. Before it was quite noticeable at the exhaust tips...normal idle/rumble then cut out briefly with a gurgle then resume normal idle, repeat. Tonight, the idle was smooth and I mentioned it to my buddies about the problem i noticed before with the Injen during 4k miles (had regular dealership oil when installed, switched to Mobil1 with same problem) of driving and how it's gone and the only thing i changed was my motor oil and filter last saturday.

I switched to Motul 300V Power 5W40 Synthetic with a Mobil1 oil filter.

Going to re-evaluate tomorrow after my 40 min commute to confirm.

I have no idea how or why this would make a difference besides Motul themselves touting low volatility and low evaporation. But if it works for me, I'm going to stick with it.
Old 11-20-2003, 08:32 AM
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OvaYahead
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I have a g35c. I took the injen CAI off for the same reason. when I came to a stop light the car would idle really rough.

did you have the piece made for for your CAI to make it a short stack?

I'm waiting for a 9 inch straight tube that I had custome made. It goes from 3 and half inches to 3 inch so then I can just use the injen CAI as a short stack during the rain season.
Old 11-20-2003, 10:21 AM
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MGV156
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I have this same problem and caused my Service Engine Soon lamp to come on. Because of this problem, I don't autostart my car after the engine is fully warmed up. I'm going to email Injen and let them know that I'm not the only one having this problem.
Old 11-20-2003, 10:28 AM
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jtree007
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Check all your hoses to make sure there is a good seal on all of them... Mine started to start idleing rough abd it was just a loose hose
Old 11-20-2003, 10:51 AM
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joebva
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Mine is doing the same thing. I put on the full CAI and the SES.

I notice it at the tach and hear it standing outside next to the exhaust.

I will check the connections this weekend. I have not re-checked anything since installing 3 months ago.
Old 11-20-2003, 11:13 AM
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FairladyZ
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Sounds like bad installs? No problems here.
Old 11-20-2003, 11:32 AM
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OvaYahead
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everything was installed correctly on mine. The only thing I can think of is that it was for an AT g35c. I had it before they came out with the one for the 6mt.


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