Takeda Dyno - FWIW
Takeda Dyno - FWIW
Edit ******
There is a new post detailing proper dyno results here - https://www.myg37.com/forums/intake-...ml#post3154649
The information below is old. (and worthless) I've requested that a Moderator remove this thread. *****************************
I debated on even posting these but I know some of you are expecting them so here we go. But let me just say I'm afraid rather than provide answers it will probably just raise more questions.
The dyno results below are from two different days - one taken two weeks ago, 3 pulls with stock intake, the other from today, 2 pulls from Takeda. Both with ARK exhaust. (I'll will post sheets once I scan them, I'm flying the next couple of days so will probably be Friday)
As difficult as it is to compare dynos on diff days, in this case it's even harder given todays conditions. To give you an idea of the conditions, the shop is at 1270ft msl, however with todays temps over 100deg and considering pressure/humidity, the density altitude was reported at 4,475ft. Pretty ****ty day for the dyno ... I'm in Oklahoma but the engine ran like it was in Albuquerque.
Based on NOAA's data for May 22nd (the other dyno day) - I estimated the density altitude at about 3000ft. I only mention all this because it almost renders the dyno's useless without being able to properly correct for ambient conditions. (maybe someone else has some more "scientific input") FWIW - The shop owner said it's easy to see swings of 15-20hp on the exact same car on different days like this, with this range of horsepower.
So on to the numbers -
STOCK INTAKE = May 22nd (3 pulls)
Max Power = 279.79 Max Torque = 229.57
Max Power = 283.17 Max Torque = 233.68
Max Power = 278.99 Max Torque = 232.12
Takeda = June 6th (2 pulls)
Max Power = 281.96 Max Torque = 224.63
Max Power = 282.17 Max Torque = 222.77
Air/Fuel mix you'll see when I post the scan files - but they were normal, nothing out of the ordinary. A tad leaner 3k - 4k, same as stock after that thru the powerband (11.63)
So here's how I interpret these numbers, I look forward to hearing others input.
If you use appx median value from two weeks ago, throwing out the highest and lowest and compare that to todays average from the Takeda run:
STOCK 279.79 / 229.57 vs Takeda 282.65 / 223.7 = + 2.86 hp / - 5.87 ft/lb
There you have it. Now everyone can argue about the effect of atmospheric conditions.
I think the real discussion will be about making +3 hp on a day thats conservatively, 20 degrees hotter than the stock run.
I'm going to try to attach a few pics and a video for those who want to hear the Takeda/ARK combo. There's a guy pressure washing in the background, but you can hear it rev.
A few other notes worth mentioning - they didn't use blowers in front of the grill today although they did on the stock runs. (it was so hot he didn't want to take them from his mechanics since I was only doing 2 runs) And it WAS extremely hot in the shop - with the hood open my temp gauge showed 112 deg for the first pull, and that was after sitting for 30 minutes while we prepped it. While driving to the shop it read 99 deg.
Personally I'm not bothered at all by the numbers, the car felt like an absolute turd on the dyno; especially having just done 3 pulls recently. Felt nothing like it did the other day at sunset, with temps about 80 deg and low humidity - as I towed a Porsche Cayman down the road, 2 car lengths behind from the line to about 90 mph.
It just felt real sluggish today, not much else I can say. Even watching the video, those with experience will probably notice how long it takes to run it up in 4th gear. In fact you'll notice in the video about half way through you'll see me check the dash thinking, maybe I left the AC on, and then recheck to make sure the VDC was off! It just would not spool up like it has been since the Takeda install - given the temp on the car gauge who knows what the intake air temp was ... 105? 110? No way to know. The temp and pressure readings on the dyno were wrong according to the owner, so they were no help. That's why I took a pic of the dash temp.
Hopefully someone else will be able to post a much better comparison - I know this one doesn't answer anything but unfortunately when I go back in two weeks I'll have added the Berks, so won't be much help there either.
There you have it, for what it's worth....(not much I know, but having broke my arm last weekend, I typed all this with one hand, so I expect some props for that!)
YouTube - ‪G37 Dyno Run‬‏
There is a new post detailing proper dyno results here - https://www.myg37.com/forums/intake-...ml#post3154649
The information below is old. (and worthless) I've requested that a Moderator remove this thread. *****************************
I debated on even posting these but I know some of you are expecting them so here we go. But let me just say I'm afraid rather than provide answers it will probably just raise more questions.
The dyno results below are from two different days - one taken two weeks ago, 3 pulls with stock intake, the other from today, 2 pulls from Takeda. Both with ARK exhaust. (I'll will post sheets once I scan them, I'm flying the next couple of days so will probably be Friday)
As difficult as it is to compare dynos on diff days, in this case it's even harder given todays conditions. To give you an idea of the conditions, the shop is at 1270ft msl, however with todays temps over 100deg and considering pressure/humidity, the density altitude was reported at 4,475ft. Pretty ****ty day for the dyno ... I'm in Oklahoma but the engine ran like it was in Albuquerque.
Based on NOAA's data for May 22nd (the other dyno day) - I estimated the density altitude at about 3000ft. I only mention all this because it almost renders the dyno's useless without being able to properly correct for ambient conditions. (maybe someone else has some more "scientific input") FWIW - The shop owner said it's easy to see swings of 15-20hp on the exact same car on different days like this, with this range of horsepower.
So on to the numbers -
STOCK INTAKE = May 22nd (3 pulls)
Max Power = 279.79 Max Torque = 229.57
Max Power = 283.17 Max Torque = 233.68
Max Power = 278.99 Max Torque = 232.12
Takeda = June 6th (2 pulls)
Max Power = 281.96 Max Torque = 224.63
Max Power = 282.17 Max Torque = 222.77
Air/Fuel mix you'll see when I post the scan files - but they were normal, nothing out of the ordinary. A tad leaner 3k - 4k, same as stock after that thru the powerband (11.63)
So here's how I interpret these numbers, I look forward to hearing others input.
If you use appx median value from two weeks ago, throwing out the highest and lowest and compare that to todays average from the Takeda run:
STOCK 279.79 / 229.57 vs Takeda 282.65 / 223.7 = + 2.86 hp / - 5.87 ft/lb
There you have it. Now everyone can argue about the effect of atmospheric conditions.
I think the real discussion will be about making +3 hp on a day thats conservatively, 20 degrees hotter than the stock run.I'm going to try to attach a few pics and a video for those who want to hear the Takeda/ARK combo. There's a guy pressure washing in the background, but you can hear it rev.
A few other notes worth mentioning - they didn't use blowers in front of the grill today although they did on the stock runs. (it was so hot he didn't want to take them from his mechanics since I was only doing 2 runs) And it WAS extremely hot in the shop - with the hood open my temp gauge showed 112 deg for the first pull, and that was after sitting for 30 minutes while we prepped it. While driving to the shop it read 99 deg.
Personally I'm not bothered at all by the numbers, the car felt like an absolute turd on the dyno; especially having just done 3 pulls recently. Felt nothing like it did the other day at sunset, with temps about 80 deg and low humidity - as I towed a Porsche Cayman down the road, 2 car lengths behind from the line to about 90 mph.
It just felt real sluggish today, not much else I can say. Even watching the video, those with experience will probably notice how long it takes to run it up in 4th gear. In fact you'll notice in the video about half way through you'll see me check the dash thinking, maybe I left the AC on, and then recheck to make sure the VDC was off! It just would not spool up like it has been since the Takeda install - given the temp on the car gauge who knows what the intake air temp was ... 105? 110? No way to know. The temp and pressure readings on the dyno were wrong according to the owner, so they were no help. That's why I took a pic of the dash temp.
Hopefully someone else will be able to post a much better comparison - I know this one doesn't answer anything but unfortunately when I go back in two weeks I'll have added the Berks, so won't be much help there either.
There you have it, for what it's worth....(not much I know, but having broke my arm last weekend, I typed all this with one hand, so I expect some props for that!)
YouTube - ‪G37 Dyno Run‬‏
Last edited by Aggieav8r; Jun 9, 2011 at 06:04 PM.
You should not worry too much about doing runs on different days and weather because your dyno horsepower #'s should both be SAE corrected right? That uses their formula and adjusts for humidity, temperature, barometric pressure etc... I would think that the fans in front of the car are a must, I've actually never seen a shop not use them. They simulate airflow as if the car was in motion and dramatically cool the intake air. I'd be pissed he skimped on the fans, even if just for 1 run. Sucks the gains weren't better but I'm glad you AF was within safe levels 
You should not worry too much about doing runs on different days and weather because your dyno horsepower #'s should both be SAE corrected right? That uses their formula and adjusts for humidity, temperature, barometric pressure etc... I would think that the fans in front of the car are a must, I've actually never seen a shop not use them. They simulate airflow as if the car was in motion and dramatically cool the intake air. I'd be pissed he skimped on the fans, even if just for 1 run. Sucks the gains weren't better but I'm glad you AF was within safe levels
I totally agree, with the temp gauge showing 112, if its recirculating that still air who knows what the intake temp was. Probably why they were close to stock - they were sucking stock air.
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Thats a dyno fail.. Really , only 2 pulls ??? Without the fans your car is just sitting there sucking up hot air. It took my Stillen CAI over 6 pulls to start seeing real gains ....
yeah, you need fans, and to keep doing runs until you see consistency in the #'s. I wouldn't have posted this because people will see it and assume Takeda's suck. This outcome will not be normal most likely, and was a result of a careless shop.
I am fairly certain it makes more power than that. There is no way I could feel an increase of three horsepower in a car this heavy. Three horsepower can barely power a lawn mower, much less make the noticable gains that I am feeling with this mod