Cold Air Intake for IS350?? - Page 2 - Lexus IS Forum
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post #16 of 22 (permalink) Old 04-16-2008, 08:56 AM
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well i had the fujita intake for about a month before i went to the dyno, then i swaped it out for the injen intake, i waited another month then i went to the dyno and thats when i saw the hp n tq increase plus that day it was hot so i was impressed.. anymore questions?

survey says, one more for the good guys!
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post #17 of 22 (permalink) Old 04-16-2008, 10:43 AM
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Originally Posted by badx33 View Post
well i had the fujita intake for about a month before i went to the dyno, then i swaped it out for the injen intake, i waited another month then i went to the dyno and thats when i saw the hp n tq increase plus that day it was hot so i was impressed.. anymore questions?
So you dynoed a car with one aftermarket intake, then a month later dynoed it with a different aftermarket intake, and you're convinced you gained power over stock which you appear to have not dynoed at all?
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post #18 of 22 (permalink) Old 04-23-2008, 07:47 PM
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an intake is not gona give you much of a gain that you can feel 5-10 this is probably all at the crank. intake is in all just for a good engine sound when you rev high. yeah it might give you gains but you are not likely going to feel a difference at all. i have fujita and i like it.
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post #19 of 22 (permalink) Old 04-27-2008, 09:01 PM
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Originally Posted by Knightshade View Post
No, it didn't.

The -stock- intake provides more air than the engine can use. There might be a couple hp to pick up from a smoother intake path (how the Joe Z gains anything) but no way you gain that much from a hot air intake with an open element. Especially not on a 250.

I could certainly see some unscientific testing that makes it look that way though.
I agree. the stock setup is a ram air set-up, no cold air can compete with that. just get a drop in K&N, blitz, HKS filter (un-oiled-to save the MAF). the only way to really improve on the stock set-up is a Joe-Z or anything that smoothes out the OEM airways.

My last car was a TDI jetta. and there were several different dynos done, and the OEM airbox had more airflow-there's a TDI golf that is like ranked 4th on the rally circuit (only diesel, and only stock chassis in his class), and still uses the OEM airbox (www.kermatdi.com). All the dynos you see are on a standard dyno. it may show a little increase, but remember that is with no air movement. The OEM stuff was designed to perform with the car moving, the other stuff wasn't.
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post #20 of 22 (permalink) Old 05-22-2008, 05:23 PM
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Can anyone tell me if the INJEN intake fit 2008 IS250?
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post #21 of 22 (permalink) Old 09-24-2009, 10:19 PM
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the increased pipe length makes more of a difference than where the air comes from..............................
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post #22 of 22 (permalink) Old 05-08-2016, 11:52 AM
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K&N on IS350

Put the typhoon on this morning, sounds great and gives a small but noticeable performance difference. The car is a bit snappier in the lower and mid rpm ranges. A lot of folks on here claim that CAI's dont do much, I dont think most people know how to interpret the data on a Dyno sheet. K&N did their base line runs and modded runs under nearly identical atmospheric conditions which is as it should be. I waited for a day like the one they used to do the mod and go out and road test the car. The claim of 12 rwhp and 10 ft lbs is correct given the conditions of the tests, on different days it wont be so. My opnion is that for $292 ( including tax and shipping) and about an hour of my Sunday morning the CAI was worth ever penny.

Last edited by Shadowfax65; 05-08-2016 at 12:11 PM.
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