Ok guys Ive got a pop charger right now with a warpspeed y pipe and greddy catback. I feel really laggy off the line and hope that a warpspeed CAI can help. My question is, will I really "starve" at high rpms or do the y pipe and catback compensate? I just don't wanna end up slower in the top end, but I would like to be quicker off the line. And no I don't wanna swap my stock exhaust for more "backpressure"

 

More air means less torque and that means your car won't be as fast right off the line. You will have more horse power but at higher rpm.

 

Your top end may suffer a little. Usually the CAI helps more so in the low and mid areas, while the pop helps in the mid to high. Freeing up your exhaust does allow your engine to breathe easier but I think with your same exhaust set up the pop should slightly edge out the CAI on the highway. This has been my experience too, when racing other max's w/ CAIs. I obviously have a pop. Are your stick or auto? I think it's a general assumption that autos usually go for the CAI and sticks, that can launch at higher rpms (more power), go with the POP. Let us know what your butt dyno thinks.

 

yup i have the slushbox. I'm hearing the same info that I read when I searched, but still it seems that no one has dynoed, or can reliably say that the CAI is indeed producing less high end torque. I've read bout the increased distance air has to travel and so on......but I need more reliable evidence, especially slushboxes with pop that have switched to cai. No butt dyno's either because the CAI is louder since it gets rid of a resonator. Track times would really help

 

GO to Maximadriver.com somewhere on that site is a comparison between two different intakes. It might be in the gtech ecu group deals section. Good luck w/ your quest.

 

goto warpspeedperformance.com and get the upper intake tube and attach your filter to that, that will help you out on both the low and high end

 

or just make more sound........ oh well, maybe i should just order a new one and do runs with both.

 

What are you talking about? Putting an upper pipe on with a Pop will not get you both low and high power. All it does is increase the sound of your intake and smooth over some turbulence. In order to recieve both low and high, you have to make compromises in either and tune it to benefit.

 

Please explain how this works. Dont tell me about feel, tell me WHY more air = less torque.

 

hehe I was wondering the same thing, but I let the guy with the gun ask it instead

 

I don't know why it does when you allow the air to flow more freely in the engine excluding a forced induction engine you loose torque at least in the bottom end. I don't know the physics of it, but it happens it is proven. Look at a vtec engine and ask yourself why they have a variable cam. And most likely swaping out your stock exaust will not give you more back pressure it will give you less.

 

So what you're saying is, you dont know what you are talking about. And less backpressure is the point of an aftermarket exhaust system.

I know you've been told that backpressure is good, but it's not. Read the 4th gen FAQ, or this article for answers.

 

Man, just please stop........This is the only thing that you said that has made sense to me."And most likely swaping out your stock exaust will not give you more back pressure it will give you less. "

No $hIT, I didnt pay those 100 dolla billz for more backpressure.

I think you are getting turbo lag confused with a NA car.

 

Back pressure is good at low RPM, it helps your car to idle smoothly and accelerate off the line better. At higher RPM where more air is needed back pressure is not wanted, That is why more car companies have gone to using either a Variable cam or some type of variable intake. the 5th generation maxima has a variable Muffler. I could easily get a physics book or ask an engineer why back pressure helps create torque but very few people would understand why it works if I tried to exsplain it. And no I'm not getting it confused with turbo lag. Ask someone that tunes cars about back pressure and how it works and why there needs to be a certain amount of it.

When you add things that free up air you get more hp in your power band, but you tend to loose torque before your power band. A perfect example of this is an S2000 you have to rev that car really high in order to get it moving but once it is the car takes off. so when you free up air you have to rev the car higher to get it to take off. This probably doesnt make any sense so just look at a before and after dyno of a car with an intake and look at the loss in torque in the bottom end.

 

Buy a higher stall torque convertor and problem solved. Has anyone ever tried measuring the MAF voltage at WOT between 1000-4000rpm? If it is the same as the POPs voltage there is no powerloss.