Any input or consideration of the Injen LT CAI?

I'm installing one of those on Thursday. The opinion being that there was less surgery and a Gt-Spec FSTB would fit nicely.

So this is really a 'reassurance' post on my part. I will, however, post some feedback when I have it done and get a bit of seat time (though there are pages of CAI feedback in the Mod section...many touting the precise CAI that the poster installed)

I do have some pre-reticence though: I think I should have gone black instead of polished. Though Rochester is right; I can have them PCd.

Sean

 

Shiny bits in the engine bay look like embarrassing crap when neglected. Whereas black components just look dirty. The point being, you'll need to start detailing your engine bay, Sean.

 

Thanks I'll read these. Should have enough time to select either one of them within a month or two...CAT should be ordered by next week. Depending on how I feeling I may order tomorrow. .

 

Sorry, I didn't notice you have an x, the gears are out of the question at this time. one person on this forum tried really hard to mod his x with gears but the problem he ran into was the front diff needing to be the same gearing as the rear. I guess the diff housing is too small to fit any other gears besides what it comes with. also, there are no other front diff's nissan makes with the proper gearing.

 

injens really prone to hydrolock due to their position, I think I read that some people have had issues in that area. I think as long as your not in an area the sees heavy rainfall, you'll be ok.

 

Thanks conkus.

I got a set of Hydro-shields with the intake. With those and caution during heavy rain I should be okay. If not...a very expensive lesson...and not my first

Sean

 

Dam, guess i can cross that off my list...

 

That is a bummer for you x'ers because it would be insane to launch with awd and 3.90's or 4.08 gears.

 

Almost ordered RHFC today. Shop guy was asking me if i need the extended O2 bungs for driver or passenger. What are these and do I need them?

 

The RHFCs shouldn't throw a CEL code but the extended pipes makes it even less likely. More of an issue w/ Test pipes.

 

cool! I'll get both, extra 40 isnt too bad.

 

I think you're misunderstanding his question because he's misunderstanding what he's asking. I could be wrong, but...

OP, you said up front you were ordering the FI RHFC. The O2 Sensor connectors on those cats are long J-Shaped connectors, designed to pull the sensor out of the stream and spoof the ECU. This is how they come, by default.

For an extra $20 per side, FI will install a second, standard bung connector for use with a wide-band sensor if you were to actively tune the car via onboard software. Unless that's your game, and unless I'm mistaken, you don't need to do this. Doesn't hurt, but doesn't help either.

Brad, re-read what's going on here. Seems like some confusion.

Here's a pic of the FI RHFC's, for perspective:

 

Thanks for the clarity John, that would seem to be what that add-on option would be.

 

So the extra bungs are more for tuning/dyno. And adding them wont make a big difference on CEL.

 

Adding them won't make any difference on CEL whatsoever. There is no relationship between one or the other.

It's been my second-hand research (and my personal experience) that FI cats simply don't register out-of-range on the O2 sensors. Part of that has to do with the J-shaped design of their connector. Another is that FI uses a catalytic converter with a 300 cell-count, opposed to the more typical 200 cell-count found in other high-flow cats. In other words, there's more surface area for catalyst to do its job.

By that, you could argue that they are *less* high-flow than other manufacturers, and I suppose that's fair. Similarly, all high-flow cats are *less* high-flow than test-pipes. However, *all* HFC's are also less restrictive than the OEM parts, and there's a point of diminishing return here, where personal choices come into play. Personally, I think FI cats are the perfect compromise between OEM cats and test-pipes, while at the same time being a very high quality build for cats that actually function the way catalytic converters are intended.

The only flaw in FI cats is the lack of support for the retaining bracket. The absence of this connecting bracket creates a noticeable vibration at idle. This is more noticeable on the 6MT, because the engine isn't engaged with the transmission at idle, but it's there nonetheless.

Man, I've taken a brain dump all over your thread, LOL.