b4 i used to cruise at 60mph at 2000rpms but after i installed the JWT POP Charger, i go 60mph at 2200rpms...what is the cause of this? I was thinking it's b/c of the OEM piping that i still have b/c of all the kinks the increase airflow can't get out? i dunno, any input would b appreciated...thanks.

 

I would like to know the answer for that question as well.

 

the K&N Cone takes out low end power..
and also...if your engine bay is hot...then the car is sucking "hotter air". When you have the box..it is just sucking the outside air...with the cone you are sucking outside and engine bay air
hot air = less dense air....
so not as much air...lesser fuel burnt...umm..less energy created...ahahaha....
that is what I recalled....
some one verify this please....I think I have a bunch of errors
=]

 

The length of the intake has an effect on where the engine is most efficient (resonance tuning). I won't get into it now, but obviously the current short length of the intake has decreased efficiency at those engine speeds. I think the theory above about air density is not true. At speeds of +- 60mph, the difference is temperature between the two intakes is little, if not zero. A cold air intake would probably cure the problem.

 

if you said that the lenght of the intake matters, but the temperature is not...I am confused.
The temperature between the engine bay and the outside when you are cruising at 60MPH has a huge delta!
else my engine bay temp will be about the same as outside temperature if I cruise around at 60MPH and decided to stop in the middle of the highway
And temperature does change the density of air
Why do we have temperature sensor in the air filter box if the ecu does not need that information?

Maybe this is not what you meant....

I buy the intake length and form matters...it is all about flow in a pipe...cutting it short to the pop charger setup is definately more turbulent than having a CAI setup
BUT..the stock resonantor is as bad as the POP interm of the flow...I might be wrong...

 

I have noticed the exact opposite with my pop charger. I cruise at 60mph at 1600 RPMs. I cleared out a bunch of extra piping from the stock intake to make more room for cold air to flow into the engine bay. I also blocked my filter from the engine heat. Maybe you didn't set it up correctly.

 

I too cleared out all the extra piping, resonator boxes and such, but still cruisin at 2200rpms, what's ur exhaust set up?

 

Your rpms are directly related to what gear you are in, not how much power you are making. Maybe the addition of mods makes the torque converter slip a little more because you're a bit lower on power down low? The only time an automatic is directly connected to the motor is when the torque converter is fully locked. At all other times, hydraulic fluid is actually driving your wheels. When the converter is locked, there should be no difference in rpm if you had a stock motor or a modded motor. On a 5 speed car, there should be absolutely no dfference since the tranny is directly hooked to the motor.

Dave

 

Well I think he is talking about when you are in overdrive. That is when it is suppose to be around 2000 RPMS.

 

when you add an intake to your car it increases the airflow going into your motor. you have a mass airflow sensor that senses the airflow going into the motor. since your car is sucking in more air, your computer adds more fuel to modify to the correct air fuel ratio. thus having an inreased amount of air and fuel going into the car and having a limitation on how much space is in the combustion chamber without raising compression, your engine thus moves faster. I may be wrong but please correct me if i am.