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75 Posts
Hi Guys,
Well as most of you know there is still a lot of controversy of whether any of the intakes that are avalible actually makes the advertised power gains. FIGS did some initial investigation and I decided to follow suit to see if my findings also correlated with what FIGS found; which was that the stock air box was actually made the most power.
I had the K&N Typhoon Intake for a couple of months. When I initially put it in, after about a month, I noticed some power and torque loss. I thought I regained some of the loss power by doing what I can to shield the intake from the hot engine air. It helped a bit, atleast that's what it felt like. Anyway, I got the K&N Typhoon Intake tested about 2 weeks ago. Note that my K&N Intake system is using a AEM Powerflow DRY Filter (approximately the same size and volume as the K&N Filter that it originally came with). I had driven the car without a ECU reset for a good 5000 or more miles so I was pretty confident that the ECU if it was going to compensate, had already done so and the numbers would reflect real world results...NOT inflated numbers that K&N would post by dynoing immediately after a ECU reset. Dyno runs 1-3 were with the K&N intake.
Next I put the stock intake back on; stock intake box, stock air filter, and the flap working as it would from the factory, reset the ECU, and also cleaned the MAF. Drove the car for a good 500+ miles so the ECU adjusts and dyno'ed again today. Dyno runs 4-7 were with the stock intake.
Next, I did the DIY Flap Mod ( http://www.clublexus.com/forums/is-f/383384-diy-stock-intake-mod.html ). I did this for dyno runs 8 and 9, no ECU reset because I figured the car would already have a decent learned map for the stock air box...plus it would have cost me more money to take the car off the dyno, drive it around, and the dyno it again. But nonetheless, I wanted to see if the DIY Flap Mod made any difference. For me personally, I always felt a marked difference with the DIY Flap Mod and that's what I used before I put on the K&N Intake.
Anyway, on with the results. I know the numbers are low, but I did this mainly for comparison purposes, not for peak HP, and every dyno is different. All of the results below are done on the same DynoJet, SAE Corrected, and Smoothing set to 5...I did the best I can to keep as much variables consistant as I can.
All the Dyno Runs:
Dyno Runs 1-3: K&N Intake
Dyno Runs 4-7: Stock Air Box
Dyno Runs 8-9: DIY Flap Mod
Dyno Runs 1-3: K&N Typhoon Intake
K&N Intake vs Stock Air Box with Stock Filter
Stock Air Box vs DIY Flap Mod
K&N Intake vs DIY Flap Mod
K&N vs Stock Airbox vs Flap Mod
There you go. Discuss!!...Darshana S...
PS Props to HK Motorsports in Van Nuys. Harry, the owner there was very professional and offered a great deal on the dynos. If anyone wants get their car dyno'd, call him at 818-908-9650.
Well as most of you know there is still a lot of controversy of whether any of the intakes that are avalible actually makes the advertised power gains. FIGS did some initial investigation and I decided to follow suit to see if my findings also correlated with what FIGS found; which was that the stock air box was actually made the most power.
I had the K&N Typhoon Intake for a couple of months. When I initially put it in, after about a month, I noticed some power and torque loss. I thought I regained some of the loss power by doing what I can to shield the intake from the hot engine air. It helped a bit, atleast that's what it felt like. Anyway, I got the K&N Typhoon Intake tested about 2 weeks ago. Note that my K&N Intake system is using a AEM Powerflow DRY Filter (approximately the same size and volume as the K&N Filter that it originally came with). I had driven the car without a ECU reset for a good 5000 or more miles so I was pretty confident that the ECU if it was going to compensate, had already done so and the numbers would reflect real world results...NOT inflated numbers that K&N would post by dynoing immediately after a ECU reset. Dyno runs 1-3 were with the K&N intake.
Next I put the stock intake back on; stock intake box, stock air filter, and the flap working as it would from the factory, reset the ECU, and also cleaned the MAF. Drove the car for a good 500+ miles so the ECU adjusts and dyno'ed again today. Dyno runs 4-7 were with the stock intake.
Next, I did the DIY Flap Mod ( http://www.clublexus.com/forums/is-f/383384-diy-stock-intake-mod.html ). I did this for dyno runs 8 and 9, no ECU reset because I figured the car would already have a decent learned map for the stock air box...plus it would have cost me more money to take the car off the dyno, drive it around, and the dyno it again. But nonetheless, I wanted to see if the DIY Flap Mod made any difference. For me personally, I always felt a marked difference with the DIY Flap Mod and that's what I used before I put on the K&N Intake.
Anyway, on with the results. I know the numbers are low, but I did this mainly for comparison purposes, not for peak HP, and every dyno is different. All of the results below are done on the same DynoJet, SAE Corrected, and Smoothing set to 5...I did the best I can to keep as much variables consistant as I can.
All the Dyno Runs:
Dyno Runs 1-3: K&N Intake
Dyno Runs 4-7: Stock Air Box
Dyno Runs 8-9: DIY Flap Mod

Dyno Runs 1-3: K&N Typhoon Intake

K&N Intake vs Stock Air Box with Stock Filter

Stock Air Box vs DIY Flap Mod

K&N Intake vs DIY Flap Mod

K&N vs Stock Airbox vs Flap Mod

There you go. Discuss!!...Darshana S...
PS Props to HK Motorsports in Van Nuys. Harry, the owner there was very professional and offered a great deal on the dynos. If anyone wants get their car dyno'd, call him at 818-908-9650.