HELLO ALL! Okay so ive had this idea bouncing around in my head since the day i got my 460. Cold air intake. I know the pros and cons with it comapred to stock. Lexus i know has already built a beautiful smart engine and i know some will say it wont do anything or even make it worse. but anyways, i was scrolling around the web and i came across a DIY infinity m37 dual cold air intake, and it really got me thinking. has anyone even ever attempted it? ill try to link a picture of the intake setup! Even if theres no gains, it would still be cool to have the filter behind the grille. let me know what you all think! https://nicoclub.com/archives/infini...ir-intake.html

 

No Thanks!! NOT worth the effort and expense......... Why would anyone remove a "well engineered" factory intake?
Looking at the intake plumbing in the picture ^^ it is a Hot Air Intake with all that metallic piping under the hood instead of plastic tubing.

BTW! Tests have proven there are MINIMAL or ZERO gains from a CAI....... It DEFINITELY does not increase resale value.

 

I totally get what you are saying about the well engineered aspect, truly is. But totally disagree with the hot intake, our intake systems are already hot from sitting in top of the engine, with the cold air design like so, but on our cars, the intake wouldn't even be close to the exhaust manifolds or anything, plus it would be taking in nice cool air from behind the grille rather than an intake sitting on top of an engine. I dont know if youve ever checked the filters after a drive but boy are those suckers HOT!

 

Just an idea bouncing in my head for a while, but when i get back from lunch ill hook it up to techstream and check the initial start up IAT, then ill check it after a 5 mile drive once its to operating temp to see if i can get some starting numbers! anything else i should be looking for?

 

Hi! Not sure it you can get that same set up as the M37. Hard to tell with plastic covers on if you can snake the hoses the same way. It should make a nice V8 throaty sound even though you my be losing bottom end power

 

yeah i really need to remove the front cover and all the plastics to take a look to even see if its even doable! but Yes i would have to agree with the throaty sound! *toolman taylor grunt*

 

Try the intake noise generator from the 2013 LS460 F sport. If you just want sound,this is hard to beat. Stock Lexus part.

 

In the end, all these add ons for sound and some for minimal power gain will make you drive the car more aggressively just to hear the sound. Im keeping mine as is for a whisper quiet sound.

 

It does seem extra hot under the hood even after a short trip. Wondering too about IAT’s.. I’ve yet to see a aftermarket pipe that splits off the throttle body. The Tom’s SC even uses factory air boxes. The LC500 has twin air boxes and there’s already a few warm air intakes on the market. I’m content with the Tom’s filters and F Sport sound generator. The exhaust is where the music is really at.

 

FYI, after reading this thread yesterday I paid attention to my IAT readings running around town. My trip wasn't incredibly long only around 3 miles total, so I think the temps could be a lot higher. Below is what i recorded.

Ambient temp was 91*F.
Idle Air Temps ranged from 113* - 118*
Cruising around 50 MPH with no hard pulls, just normal city driving.

From my stats the IAT averaged around 25* above the ambient temp. This seems to be consistent with what I've seen in the past.

 

Of course I couldn't agree more with the statement above.

That CAI is very interesting. It's probably been stated above but that particular set up may not fit behind our grill. It looks large to me. The pipes look like they would tend to "pick up" heat in the area, mainly idling. But running down the road, metal or plastic probably wouldn't be very much difference. I find that system interesting. However, I think it would still be a very scavenging system. No ram air effect at all. Not that it's required.

But like I said, I find it interesting, but just little to no bang for the buck.

 

You won't get any more horsepower, but it's your money anyway.

 

Not only that,the GS460 with a one box setup makes 40 hp less. It takes 5 liters and more aggressive cams to top the 460.(ISF)

 

The GS460 and AWD LS460 have log tube style headers similar to what was on the 4.3. That’s where most of the power loss is. ISF headers are nearly identical to what’s on RWD LS460s. So the difference in power comes from the 0.4 L that Yamaha put in.

 

I had a similar setup in my old 08 Nissan 350Z. It was simply for looks and noises. The car might gain a few hp if any.