Injens Intakes Independent Dyno
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Joined: Mar 2008
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Been reading the posts took a look a on the internet and found the the computor system on the dynos adjust for the weather(it states)
OK. You ran your car on a dyno and its computer spit out a bunch of power and torque numbers. In fact, you have two sets: uncorrected, or "raw," numbers and corrected numbers. Gearheads love to compare numbers. Each dyno is subjected to different atmospheric conditions. To facilitate comparison, there has to be a "standard" to which dyno results conform or are "corrected." In the United States this is usually Society of Automotive Engineers (SAE) standard J1349 Rev JUN90. Correcting to SAE J1349 alters the data to make it seem as if it was taken when the atmospheric pressure was 29.23 in/hg., the temperature 77° F and the humidly zero.
The degree to which temperature, pressure and humidity affect power output is constant. If we accurately measure those parameters at the dyno location, we’ll know the difference between the atmospheric conditions at the time and location of our test and those of SAE J1349. That difference is applied to the raw data and the result is corrected power and torque which we can compare to other data taken anywhere in the world that is also corrected to J1349.
The DynoWare EX+ measures and inputs all variables relating to the correction process. Older Dynojet hardware (an expansion board in a 286 or better PC running MS-DOS) requires the operator to measure humidity with the other variables inputted automatically. The software does the corrections based on the atmospheric data.
OK. You ran your car on a dyno and its computer spit out a bunch of power and torque numbers. In fact, you have two sets: uncorrected, or "raw," numbers and corrected numbers. Gearheads love to compare numbers. Each dyno is subjected to different atmospheric conditions. To facilitate comparison, there has to be a "standard" to which dyno results conform or are "corrected." In the United States this is usually Society of Automotive Engineers (SAE) standard J1349 Rev JUN90. Correcting to SAE J1349 alters the data to make it seem as if it was taken when the atmospheric pressure was 29.23 in/hg., the temperature 77° F and the humidly zero.
The degree to which temperature, pressure and humidity affect power output is constant. If we accurately measure those parameters at the dyno location, we’ll know the difference between the atmospheric conditions at the time and location of our test and those of SAE J1349. That difference is applied to the raw data and the result is corrected power and torque which we can compare to other data taken anywhere in the world that is also corrected to J1349.
The DynoWare EX+ measures and inputs all variables relating to the correction process. Older Dynojet hardware (an expansion board in a 286 or better PC running MS-DOS) requires the operator to measure humidity with the other variables inputted automatically. The software does the corrections based on the atmospheric data.
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Joined: Dec 2007
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From: South FLA
I will be the first to admit I have never thought highly of intakes (just look at my previous posts). I have always doubted what effectiveness there would be for an intake mod on an engine that was already implemented with an efficient intake system.
That being said. The dyno test tells us nothing. Sure she got a baseline, but it was not stock. how could Injen predict what other mods work on the car and what doesn't? absurd. EVERY aftermarktet manufacturer dynos a baseline STOCK to their product. Did anyone take into effect that the a/f ratio is thrown waay off stock that the ecu is either retarding timing or that it is adjusting?
My 350Z ran great with a plenum spacer...but ran like crap after headers, exhaust, etc. When Tadashi (technosquare) took my plugs out, he found I was running very lean, the car started to pull timing, and in many case my engine was detonating. after an ECU flash, the car ran great and stronger than before.
Until I see a baseline dyno with an Injen...I will hold off on my 'I Told You So..' card. If you are familiar with modding (especially with current cars todays with learning ecus and efficient engines), you can't expect a claimed baseline gain and compare it to when you have already thrown in HFC (which is a HUGE choke point already) and an exhaust. it just doesn't happen. Sport Compact Car did a dyno comparo with a Nismo Z (equiped with exhaust, cams, headers, intake) with a stock Z and only read 10whp more. They blamed it on the 91 octane gas but really it's the ECU.
People who are spewing venom need to ask themselves this: 'If nissan made an ECU for a car that runs at the parameters to the fullest extent of the right air and fuel ratio of which the engine was built...then how would an aftermarket part affect it? Would some random part that nissan did not account for magically make the engine run better?'
C'mon guys....this is silly....
That being said. The dyno test tells us nothing. Sure she got a baseline, but it was not stock. how could Injen predict what other mods work on the car and what doesn't? absurd. EVERY aftermarktet manufacturer dynos a baseline STOCK to their product. Did anyone take into effect that the a/f ratio is thrown waay off stock that the ecu is either retarding timing or that it is adjusting?
My 350Z ran great with a plenum spacer...but ran like crap after headers, exhaust, etc. When Tadashi (technosquare) took my plugs out, he found I was running very lean, the car started to pull timing, and in many case my engine was detonating. after an ECU flash, the car ran great and stronger than before.
Until I see a baseline dyno with an Injen...I will hold off on my 'I Told You So..' card. If you are familiar with modding (especially with current cars todays with learning ecus and efficient engines), you can't expect a claimed baseline gain and compare it to when you have already thrown in HFC (which is a HUGE choke point already) and an exhaust. it just doesn't happen. Sport Compact Car did a dyno comparo with a Nismo Z (equiped with exhaust, cams, headers, intake) with a stock Z and only read 10whp more. They blamed it on the 91 octane gas but really it's the ECU.
People who are spewing venom need to ask themselves this: 'If nissan made an ECU for a car that runs at the parameters to the fullest extent of the right air and fuel ratio of which the engine was built...then how would an aftermarket part affect it? Would some random part that nissan did not account for magically make the engine run better?'
C'mon guys....this is silly....
Very well said!!
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Joined: Mar 2008
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We all know when we add mods ,, horse power is what were looking for ,,and were always looking for the most ,,, sometime we gain and sometimes we don't,,,, I just think with all the hype we expect more ,,,,,the real problem with these is where is the air coming from it looks like to me it from the engine compartment and it get hot inside there ,,, in my opinion there mounted in the wrong place,,,, unless you take out the lower grill plates ,, but then what about water getting in there ,,, also it makes changing the filter a 2 hour job instead of 5 minutes
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Between you and blueslate you guys are unbelievable. Send some money my way and I will do what ever you want for the dynos.
Last edited by Pms1212; Jul 1, 2008 at 10:08 PM.
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From: al, eguor notab
i guess what i was really trying to say was that your cars brain will do its best to keep you from getting the most out of your mods. i know you are quite dissappointed and a little angry and i don't blame you at all. however, i would bet that a reflash with the intakes (along with the other mods you have done) will show an improvement over the mods without the intakes. hope that makes sense.
I personally wasn't expecting 14whp myself, since those were dynojet numbers, and mustang dynos are lower than dynojet numbers across the board. My baseline mustang-runs averaged around 261whp and 211wtq. Conditions were in the 60s, and at sea-level.
Anyone here with an Injen intake (only) being delivered within the next 48 hours willing to step up and get their car dyno'd before and after?
I'll personally paypal you $15 dollars towards it, anyone else willing to chip in and get this done and put all the arguements to rest?
Or if gamedog's willing to get a 3rd party dyno i'll personally pay for the whole thing.
I'll personally paypal you $15 dollars towards it, anyone else willing to chip in and get this done and put all the arguements to rest?
Or if gamedog's willing to get a 3rd party dyno i'll personally pay for the whole thing.
Last edited by RYs06MT; Jul 1, 2008 at 09:56 PM.
Anyone here with an Injen intake (only) being delivered within the next 48 hours willing to step up and get their car dyno'd before and after?
I'll personally paypal you $15 dollars towards it, anyone else willing to chip in and get this done and put all the arguements to rest?
Or if gamedog's willing to get a 3rd party dyno i'll personally pay for the whole thing.
I'll personally paypal you $15 dollars towards it, anyone else willing to chip in and get this done and put all the arguements to rest?
Or if gamedog's willing to get a 3rd party dyno i'll personally pay for the whole thing.
I'm willing to take up your offer, if you can get Lou to ship it to me NOW. I have a baseline already on my ALL stock S, on a mustang dyno WITH A/F ratios.
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Joined: Oct 2007
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From: Ponte Vedra, FL
And whos to say Injen followed those steps when obtaining a before/after dyno, none of us were personally there.