Made my own True Cold Air Intake
Thread Starter
Driver School Candidate
Joined: Feb 2013
Posts: 19
Likes: 0
From: NM
Sure I will do that when I get a chance. Its actually not as loud in the car as you would think, and its quieter inside the car than a cut airbox.
nice job dude.
ive had cai on my previous cars running down the fender, i would remove the fender liner for max cool air, never had an issue in the rain. i think the filter would have to be submerged to suck in enough water to damage the engine.
ive had cai on my previous cars running down the fender, i would remove the fender liner for max cool air, never had an issue in the rain. i think the filter would have to be submerged to suck in enough water to damage the engine.
Driver School Candidate
Joined: Oct 2013
Posts: 10
Likes: 0
From: Ca
Hey guys new to CL, but not new to modding/racing cars, I have been fabricating and racing my whole life and right now have a mustang thats about to hit the dyno and will put down about 800-1000 hp depending on boost level. I just recently upgraded my daily driver to an 06 IS350 with only 54K miles and absolutely love it. After some research I found out there wasnt much to offer in the cold air intake area, so I made my own.
Some details about the intake, 3" polished mandrel bent aluminum tubing with beaded ends, Machined and welded on MAF mount, valve cover breather, 3" green(also avail in blue) silicone couplings, hose clamps, K&n air filter. The air filter is located in the passenger side fender and gets cold air flow from the brake vent duct. Testing revealed a MINIMUM of 13* COOLER air charge temps vs the stock air intake. Testing done at 64* ambient air temp, while driving at 50mph the stock air intake temps were at 77*, at full throttle 84*. With the UP true cold air intake the temps were 64* while driving at 50 mph and 64* at full throttle. As the ambient air temp increases the UP cold air outperforms the stock intake even more.
I havent had a chance to dyno the UP intake vs stock but will soon. I can tell you the car feels much faster than it did with a cut airbox with k&n filter. It now spins the tires into 2nd gear.
"What if it rains?" you say, I designed the upper intake to fit the stock airbox for just that reason. I keep my stock airbox lid and filter in the trunk and also a screwdriver, If it rains you can quickly take loose the cold air and hook up the upper pipe to the stock airbox and drive off within 5 mins.
Enough about details heres some pics and a video of how it sounds.
Ultimate Performance CAI for Lexus IS250/350 - YouTube
Some details about the intake, 3" polished mandrel bent aluminum tubing with beaded ends, Machined and welded on MAF mount, valve cover breather, 3" green(also avail in blue) silicone couplings, hose clamps, K&n air filter. The air filter is located in the passenger side fender and gets cold air flow from the brake vent duct. Testing revealed a MINIMUM of 13* COOLER air charge temps vs the stock air intake. Testing done at 64* ambient air temp, while driving at 50mph the stock air intake temps were at 77*, at full throttle 84*. With the UP true cold air intake the temps were 64* while driving at 50 mph and 64* at full throttle. As the ambient air temp increases the UP cold air outperforms the stock intake even more.
I havent had a chance to dyno the UP intake vs stock but will soon. I can tell you the car feels much faster than it did with a cut airbox with k&n filter. It now spins the tires into 2nd gear.
"What if it rains?" you say, I designed the upper intake to fit the stock airbox for just that reason. I keep my stock airbox lid and filter in the trunk and also a screwdriver, If it rains you can quickly take loose the cold air and hook up the upper pipe to the stock airbox and drive off within 5 mins.
Enough about details heres some pics and a video of how it sounds.
Ultimate Performance CAI for Lexus IS250/350 - YouTube
