[killa cam]

you fucking retard. i wish i could groan the above post!

this has been beaten to death thousands of times.

the colder the air going into the turbo, the colder it is coming out of the turbo. the colder the air going into the IC, the colder it is coming out of the IC. YES, ITS REALLY THAT FUCKING SIMPLE. why is this so hard to comprehend?

but i agree with dread at the same time. if your limited on funds, pick up a SRI. the gains are similar (CAI has a performance edge over SRI), and cp-e makes a nice one... they are most definitely in stock, no wait to get one... so get one now!

i also agree with dread on shifter bushings. those are cheap as balls and really improve shift feeling. after that, get the mount. i would get the intake first because of reasons i love jdm hoes already stated...

 

[killa cam]

your wrong there buddy... you must be reading out of cobbs physics book. it's really painful arguing with people who clearly have no idea what they are talking about. a bunch of garage engineers and mechanics in this place! i bet you think it's possible for an air\air intercooler to have 95% efficiency with only a .5psi pressure drop too.

seriously dude, think about what you are saying there. or, consult a professor or something. i got a nifty experiment... why don't you ask a guy in canada with a DH to log his boost, IATs and BATs, and then ask the same from a guy in texas. compare the results.

or, type "pv nrt calculator" into google, and start playing around with the calculator and see what kind of numbers you come up with. don't forget the n variable either! thats an important one. also look up the definition of an ideal gas, (and learn why 'air' is not one).

sounds like you have a lot of homework! i could simply tell you why you are wrong, but i think you would learn more if you did the research for yourself. sorry to be such a dick about it, but it really gets annoying after a while.

i wish other people would say something too, (isn't tvissues a turbo expert?) but they probably know better than to start up this kind of conversation. god knows this forum is full of experts!

 

[killa cam]

nah dude you came in here saying that shit like it's fact. if you think about it, for only a second, you would realize that the argument is nothing but horse shit. does your car run stronger on cool days vs hot summer days? well according to your post it wouldn't matter, because the turbo heats it up to the same temp no matter what. Wrong!

[quote author=Steve0 link=topic=138252.msg2989418#msg2989418 date=1236832272]
If you wanna play with "n" variable, then you have the 2nd "argument" I gave. Hot air is less dense, and thus you are pulling in less oxygen, you're obviously going to make less power. I also said I was no chemist and was not sure the validity of the answer. [1] How much less dense is 90 degree air than 80 degree air? [2] How much less power are you gonna make? [3] Enough to matter? I have no idea.

I also stand by my claims that part of the gain on many cars from intake systems is from the volume of air being ingested. There are many high horsepower turbo cars out there with an open element right next to the motor.
[/quote]

to answer your questions, you first have to take into account absolute pressure and humidity. both of those will affect air density. if you were to assume 29.92 inches of mercury and 50% relative humidity, [1] the density of 90° air would be 1.145 kg/m^3 and 80° air would be 1.17kg/m^3, a 2.14% change. lets assume mazda strapped the MZR DISI to an engine dyno, and dynoed the car using the standard reference conditions (22.235"hg, 0% RH, and 77°F)(as per SAE J1349) and came up with 263 peak horsepower. if the temp in the air went up to 90° leaving other variables unchanged, [2] you can expect a drop of almost 4 horsepower. but also consider your pressure and humidity... those have an impact as well. So does it matter? [3] I would say yes. Dread would say no. who's to say either of us are right? make up your own mind on that one. I prefer the best solution, some prefer the easiest solution. cp-e now caters to both types

and of course, a lot of the gain in power comes from REMOVING THE RESTRICTIONS. anytime you reduce the amount of power needed to move air through the cylinders (pumping losses), you will have more power available to spin the tires. the same theory applies to the exhaust side of the motor. this is probably the bulk of the HP gain, but definitely not the only variable in the equation of making power.

 

[killa cam]

[quote author=Ryz link=topic=138252.msg2989942#msg2989942 date=1236870032]
This is why I hate people trying to up their post count. They don't care about factual info.
[/quote]

the sad thing is that he will probably spread that misinformation again, because, well i dunno. it must be because his car runs like shit no matter what the temp is...

for further reading check out this .pdf paper from kenne bell. he actually voids your warranty if you use a SRI!

http://www.kennebell.net/techinfo/general-info/HotAirWARNING.pdf

steve-o: look at the pretty pictures that he drew. note the outlet temps of the supercharger with cold air vs. hot air.