Hey guys I'm looking for a cold air intake to install on my 2012 g37xs. Now I've been looking at eBay and have come across name brands for $500, and other less known name brands for $200. Now is there a big difference between these? I know paying more results in better quality usually, but is it just for the name ? or is it for the quality as well?

Thanks

 

Do you have a link for the $200 ones? The Takeda and Stillen Gen3 are the two that are most recommended around here and are in the $450-500 range.

 

Go to the intake/exhaust section and do a search there. LOTS of info. I will say there are very few that don't require a tune to optimize the intake. One of the few that doesn't is the Stillen intake. I have a Nismo R-tune and due to flow over the meter, it needs a tune to optimize it. And I'm sure that's true of most of them out there. The AAM apparently doesn't need a tune with it's insert but I don't have any confirmation of that.

Most of your short intakes sound great but don't really produce a whole lot of power, if any, out of the box.

 

BCP BLK Heat Shield Cold Air Intake Kit For 2008 2009 2010 2011 2012 2013 G37 | eBay


Im thinking of going takeda, or stillen, these cheap ones seem fishy

 

Im looking for the cold air intake mostly due to the fuel economy boost, that way it will pay for itself. Im thinking either stillen or takeda.

 

Won't happen. If anything, you'll get on the throttle more and your mileage will go down. Looking at that eBay intake kit, I'd skip it. The most important aspect is the quality of the filter. If it's letting in dirt, doesn't matter how much power it produces or how good it looks. Your engine won't last long or will produce far less power due to cylinder scoring, ring damage or deposit buildup doing bad things to your valves and valve seats.

 

Yeah I'm for sure going to go with a name brand either stillen or takeda. As for the fuel mileage, it was in my mind that with the initial investment of the CIA, over time the fuel savings would pay for it. Is that incorrect?

 

Well I'm of the consensus that more air in, more fuel in. I thought I saw a slight uptick in fuel economy with mine but I think it was a placebo. Most of the restriction on the induction side is in the heads and a small amount is in the intake. Our intakes are actually designed very well for the most part. But...if you add more air and need to maintain a certain a/f ratio, more fuel must be added.

The best way to improve mileage is driving habits. I modified mine a bit and saw a pretty drastic improvement on the daily work commute. It's a really fun car to drive, however, and it's not the best choice of car if you're trying to be miserly. Not the worst but not the best. It's a sports-oriented GT.

 

The OEM setup is engineered for efficient flow and optimal mpg. You'll typically get a bit hp gain at the upper rpm ranges but running your G at the higher rpms where these intakes open up will result in worse mpg on average. A HighFlow cat setup or Test pipes may increase your mpg a bit, but even then it would be minimal, probably not enough to pay for themselves. Lighter wheels & tires or removing other weight in your car is about the only easy way to improve mpg.

 

Takeda or stillen and don't look back. There were very good deals on both for less shipped than prices mentioned above..

 

I've had both Takeda and Injen on my car, I liked the Injen better since the filters were directly behind the faux fog light holes, looked awesome and didn't block any air flow to the radiator. They sounded the same to me, for the record.

 

Well the link you posted are for short ram intakes not cold air intakes. I have to agree unless you are getting full cold airs that go in the grill then factory intakes are the best. The only problem with cold air intakes is that you are going to need a retune because they make the car run lean.

 

I have full catless exhaust and CAI without a tune and the weather has a huge play in how the car runs and idles... No bueno.

 

After I added my FI resonated test pipes my car was running really rich. I could shoot flames while shifting with no tune.

 

I have the r2c short ram intake and that thing is a beast a WOT, heck you can hear the grunt at 2500-3500 rpm and guarantee no intake is gonna save you on fuel economy. Sound > Gas.