What have we learned
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From: Ponte Vedra, FL
What I'm saying is the baseline dyno and intake dyno need to be the same temp in order to rule out temperature effects such as heat soak.
Last edited by JLai; Jul 10, 2008 at 12:00 AM.
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From: HONOLULU Boy in Anaheim
not really but i see your point....
but, being on car enthusiast boards and starting threads about promising dyno sheets and then nothing is gonna spark a disaster...
my rant is more towards Injen as a reputable company failing like this
and if that was sarcasm....i can go all night
but, being on car enthusiast boards and starting threads about promising dyno sheets and then nothing is gonna spark a disaster...
my rant is more towards Injen as a reputable company failing like this
and if that was sarcasm....i can go all night
been to injen know the cars they dynoed met the r&d guys saw some graphs...been in a G with injens....raced a G with injens.....seen everything with my own eyes...dont know what the hell everyone complaing about.........from my experiance a chassis dyno is a tool to tune...numbers always vary not all the same too many variables to be reliable...i only belive engine dynos...eliminates alot of variables.....some tires sizes make or lose hp too..... like i said whatever
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From: Jersey Shore
been to injen know the cars they dynoed met the r&d guys saw some graphs...been in a G with injens....raced a G with injens.....seen everything with my own eyes...dont know what the hell everyone complaing about.........from my experiance a chassis dyno is a tool to tune...numbers always vary not all the same too many variables to be reliable...i only belive engine dynos...eliminates alot of variables.....some tires sizes make or lose hp too..... like i said whateverbut 14whp to 2 whp....unexplainable
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From: New York
The injens fail for the main reason they are NOT breathing air from that little hole on the bottom of the fender well, even the factory intakes breath air from the outside. The factory is pulling fresh air in from the grill. The ONLY air the injens are breathing from is coming from the hot motor. Now you say unlock the ECU, sure the ECU is going to show a better reading but it could never make the injens breath better from the bottom little hole. If you take your hand and put it in front of the tube you will see that your car wants to stall, now that's whats happeneing with the injens, there pulling air from no where.
I don't get it still. Why would an intake company produce an intake, after such time and development which cost money, only to lie about their numbers? They know people are going to do a dyno, obviously there is some sort of information we are missing here. We need to see the entire dyno sheet to judge....
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Nothing personal, but y'all need to learn this someday...
First of all, this post might hurt the feelings of people who bought the injen CAI's but I feel like you need to be informed.
NO ONE should ever expect a 14hp+ gain just by installing an intake system. NO ONE!!! It's a tough horsepower battle out there between car manufacturers and believe me when I say that the stock intake systems are pretty much close to being maxed out. Infinity would not create a crappy intake system to loose hp while at the same time competing with carmakers like BMW. Why would they? Our engines only got bigger by 0.2 litres compared to the VQ35's but now it has two throttle boddies and air boxes instead of one. That's one throttle body and one intake system for only 3 cylinders. That's plenty.
Aftermarket intake manufacturers claim that their cold air intake will result in less restriction thus resulting in high hp gain. Have you seen how long the pipes are on CAI's? Yup, that in itself causes restriction all by itself. Race cars run open exhaust for the same reason. Also, that pipe will also get hot under the hood and air passing through it will also rise in temperature defeating the purpose of it being a CAI. The longer the pipe,also the more time the incoming air will have time to absorb heat!!! CAI pipes are also made of metal which is a great conductor of heat. CAI manufacturers will also claim you'll get a cool charge of air while you're driving. That only works on individual throttle body systems found on naturally aspirated race engines. Those throttle bodies are extremely close to the cylinder head intake ports so the air will not loose velocity. Long pipes with bends will kill that velocity. How can you get a high velocity air charge if the air filter is hiding behind the bumper anyway??? And last but not least, the little ripples on your stock intake arm causes air turbulence that creates a better A/F mixture. Old school road racers knows this trick. You simply won't get that turbulence effect on a smooth metal pipe!!! Ask any engine builders and they will tell you that they will port but not polish intake ports on cylinder heads on NA motors because they want that turbulence. I DARE INJEN OR ANY OTHER CAI MANUFACTURERS TO CORRECT ME ON THIS!!! I DON'T THINK ANY OF YOU CAN. YOU'RE DYNO RESULTS ARE PATHETIC CONSIDERING ITS PRICE. MORE ON THIS LATER. I NEED A CIGARETTE....
NO ONE should ever expect a 14hp+ gain just by installing an intake system. NO ONE!!! It's a tough horsepower battle out there between car manufacturers and believe me when I say that the stock intake systems are pretty much close to being maxed out. Infinity would not create a crappy intake system to loose hp while at the same time competing with carmakers like BMW. Why would they? Our engines only got bigger by 0.2 litres compared to the VQ35's but now it has two throttle boddies and air boxes instead of one. That's one throttle body and one intake system for only 3 cylinders. That's plenty.
Aftermarket intake manufacturers claim that their cold air intake will result in less restriction thus resulting in high hp gain. Have you seen how long the pipes are on CAI's? Yup, that in itself causes restriction all by itself. Race cars run open exhaust for the same reason. Also, that pipe will also get hot under the hood and air passing through it will also rise in temperature defeating the purpose of it being a CAI. The longer the pipe,also the more time the incoming air will have time to absorb heat!!! CAI pipes are also made of metal which is a great conductor of heat. CAI manufacturers will also claim you'll get a cool charge of air while you're driving. That only works on individual throttle body systems found on naturally aspirated race engines. Those throttle bodies are extremely close to the cylinder head intake ports so the air will not loose velocity. Long pipes with bends will kill that velocity. How can you get a high velocity air charge if the air filter is hiding behind the bumper anyway??? And last but not least, the little ripples on your stock intake arm causes air turbulence that creates a better A/F mixture. Old school road racers knows this trick. You simply won't get that turbulence effect on a smooth metal pipe!!! Ask any engine builders and they will tell you that they will port but not polish intake ports on cylinder heads on NA motors because they want that turbulence. I DARE INJEN OR ANY OTHER CAI MANUFACTURERS TO CORRECT ME ON THIS!!! I DON'T THINK ANY OF YOU CAN. YOU'RE DYNO RESULTS ARE PATHETIC CONSIDERING ITS PRICE. MORE ON THIS LATER. I NEED A CIGARETTE....
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From: HONOLULU Boy in Anaheim
up too maybe but it must have been a good day on the dyno.....the graphs i saw were close......from what i felt and saw these work......LOL thats why its good to wait LOL to the people that have bought or ordering I think its a good buy so far...but then again good things come to those who wait eh LOL
. Any thing further you would like to add.
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Joined: Jan 2008
Posts: 770
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From: HONOLULU Boy in Anaheim
First of all, this post might hurt the feelings of people who bought the injen CAI's but I feel like you need to be informed.
NO ONE should ever expect a 14hp+ gain just by installing an intake system. NO ONE!!! It's a tough horsepower battle out there between car manufacturers and believe me when I say that the stock intake systems are pretty much close to being maxed out. Infinity would not create a crappy intake system to loose hp while at the same time competing with carmakers like BMW. Why would they? Our engines only got bigger by 0.2 litres compared to the VQ35's but now it has two throttle boddies and air boxes instead of one. That's one throttle body and one intake system for only 3 cylinders. That's plenty.
Aftermarket intake manufacturers claim that their cold air intake will result in less restriction thus resulting in high hp gain. Have you seen how long the pipes are on CAI's? Yup, that in itself causes restriction all by itself. Race cars run open exhaust for the same reason. Also, that pipe will also get hot under the hood and air passing through it will also rise in temperature defeating the purpose of it being a CAI. The longer the pipe,also the more time the incoming air will have time to absorb heat!!! CAI pipes are also made of metal which is a great conductor of heat. CAI manufacturers will also claim you'll get a cool charge of air while you're driving. That only works on individual throttle body systems found on naturally aspirated race engines. Those throttle bodies are extremely close to the cylinder head intake ports so the air will not loose velocity. Long pipes with bends will kill that velocity. How can you get a high velocity air charge if the air filter is hiding behind the bumper anyway??? And last but not least, the little ripples on your stock intake arm causes air turbulence that creates a better A/F mixture. Old school road racers knows this trick. You simply won't get that turbulence effect on a smooth metal pipe!!! Ask any engine builders and they will tell you that they will port but not polish intake ports on cylinder heads on NA motors because they want that turbulence. I DARE INJEN OR ANY OTHER CAI MANUFACTURERS TO CORRECT ME ON THIS!!! I DON'T THINK ANY OF YOU CAN. YOU'RE DYNO RESULTS ARE PATHETIC CONSIDERING ITS PRICE. MORE ON THIS LATER. I NEED A CIGARETTE....
NO ONE should ever expect a 14hp+ gain just by installing an intake system. NO ONE!!! It's a tough horsepower battle out there between car manufacturers and believe me when I say that the stock intake systems are pretty much close to being maxed out. Infinity would not create a crappy intake system to loose hp while at the same time competing with carmakers like BMW. Why would they? Our engines only got bigger by 0.2 litres compared to the VQ35's but now it has two throttle boddies and air boxes instead of one. That's one throttle body and one intake system for only 3 cylinders. That's plenty.
Aftermarket intake manufacturers claim that their cold air intake will result in less restriction thus resulting in high hp gain. Have you seen how long the pipes are on CAI's? Yup, that in itself causes restriction all by itself. Race cars run open exhaust for the same reason. Also, that pipe will also get hot under the hood and air passing through it will also rise in temperature defeating the purpose of it being a CAI. The longer the pipe,also the more time the incoming air will have time to absorb heat!!! CAI pipes are also made of metal which is a great conductor of heat. CAI manufacturers will also claim you'll get a cool charge of air while you're driving. That only works on individual throttle body systems found on naturally aspirated race engines. Those throttle bodies are extremely close to the cylinder head intake ports so the air will not loose velocity. Long pipes with bends will kill that velocity. How can you get a high velocity air charge if the air filter is hiding behind the bumper anyway??? And last but not least, the little ripples on your stock intake arm causes air turbulence that creates a better A/F mixture. Old school road racers knows this trick. You simply won't get that turbulence effect on a smooth metal pipe!!! Ask any engine builders and they will tell you that they will port but not polish intake ports on cylinder heads on NA motors because they want that turbulence. I DARE INJEN OR ANY OTHER CAI MANUFACTURERS TO CORRECT ME ON THIS!!! I DON'T THINK ANY OF YOU CAN. YOU'RE DYNO RESULTS ARE PATHETIC CONSIDERING ITS PRICE. MORE ON THIS LATER. I NEED A CIGARETTE....
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Joined: Oct 2007
Posts: 1,381
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From: Ponte Vedra, FL
^^ Still waiting on an explanation as to why Injen makes more hp than stock if CAI is useless and there's no air where they're located. Not trying to be a smarta$$...just wondering why theories are not adding up.