heres the deal ive heard xtc intake gives 10 horsepower and ive been wanting to get that but i guess the only site its on is cobaltaddiction.com and i cant get on that site for some reason

im really hoping to get a intake as soon as possible so is there another site i can get the xtc from or is there another intake that gives as good of power as the xtc????

all help is appreciated

ive checked many threads and it doesnt answer my ?s so sorry for the repeated intake threads

 

http://cobalt-addiction.com

 

Just a question, how will an intake gain you any horsepower when your car is supercharged? You are limited to the efficiency of your supercharger since it is a compressor that has an upper limit. The intakes do however raise the efficiency slightly allowing you to hit boost faster and let you hear the whine while driving. Just a question and you can correct me if I am wrong.

 

just said i cant get to that site for some reason..... thanks though

 

you answered your own question. 'limited to the efficiency of your supercharger' 'intakes do however raise the efficiency slightly'.

The supercharger pulls as much air as it can effeciently suck in. Increase the effeciency = increase the power that can be made.

 

u might need to download macromedia flash player 8 download here and then try again....http://www.adobe.com/shockwave/downl...com/flash.html

 

That is why I asked about how people are quoting that they get hp gains from the intakes on the SS/SC. Cobalt Addiction quotes gains as well, but then again, we are limited to the supercharger. More air does not equal more hp in these cars. I agree that in a NA application there will be some power gains, but in a forced induction if the efficiency increases, you will just move your hp curve to a lower RPM. You will be at max boost either way, it is just the point at which you hit max boost that will be different.

 

they dyno'd the car before and after on the same day with in an hour on the same dyno... got 10whp and 6 wtq... they have the dyno graph on the site... factory intake piping and box sucks... thats why there are gains.. update your flashplayer and it'll work.. unless they are updating the site.. I can't check cause flash is blocked on my work comp.

 

the car still needs air in order for anything to work. the supercharger doesn't compress air from nothing and in fact doesn't compress air at all in the way most think it does. the air is stacked and compressed in the engine not the supercharger. the sc'er just moves air into the engine as fast as it can. gains can be seen because the superchargers effeciency to move that air has increased since the restrictive box it no longer thier stunting the air flow

 

The published graph shows one dyno done on 1/19/06 and the other on 1/20/06. I wouldn't say same day.

Pierre

 

hmm I thought it was... my bad... but it did give gains.... if anything at my next dyno session... I'll swap piping and do a before and after... only take me a few minutes.

 

although the intake may or may not draw in more air for the engine you also have to remember that colder air is better for the engine which increases power. IMO that is where you see the majority of your HP gains with an intake. Usually an aftermarket intake is either down in the fender well or it just generally has a clearer path to cooler air which it is sucking up = colder / more dense air into the engine.

 

Great!

For bonus points dyno the stock set up with a new filter then switch to the XTC. Correction factors and atmospheric conditions go a long way to adding credibility to a dyno test.

Pierre

 

gotta find someone with a stock airbox for me... I already hacked mine up

 

I"m sure someone will be installin one on the dyno day.. so if worse comes to worse... we could use them

 

The gain is neglable with a intercooled motor.

Your getting most of the gain form the lack of a airbox silencer, since your replacing a bunch of bends and such with a straight piece of metal.

Also the gains are down low, meaning that's more usable power. Peak gains are for dyno queens. What matters is two to three thousand RPM before redline. That's where your motor is mos tof the time anyway during a race.

 

the intake is helping you achieve your max boost lower in the rpm so there fore you achieve it for longer than you did before because the supercharger doesnt fully boost until around 4,000 rpms maybe even 4,500 so your getting more boost below that with the intake

 

You will see some more power due to less bends in the system, however every little bit that you can drop that air intake temp will do good for the engine. This may or may not be dyno proven, but it is the beliefs of many people. Including an intercooled engine- cold air in = colder air out. warm air in = cold air out, now would you rather have cold air or colder air? Me personally the coldest air I can get is what I am shooting for.

 

Denny put the aem CAI and lost hp but got lots of torque. He has more torque than mine st2

 

He actually gained 8 hp and 6 tq, and that dyno was only to 5900 rpm. He went from 194/183 at the wheels to 202/189. Figure that out to 6450, and he likely would have netted another couple hp. (no more torque, it had already peaked) It's not the piping that restricts our cars, so much as the box itself.

 

The stock intake is mostly 3", maybe at smallest 2.75" in some areas, the air filter is a restriction too.. people forget the basics. Has anyone seen a before and after dyno with a full 3" installed ?

 

Just so you know you pulled a thread out of the crypt from 2006. Gotta be some more recent and definitive answers to the question. My memory from stock air box was fairly restrictive. Gains would be far more noticeable with if you pully down vs a relatively stock setup. If I recall 12-15whp with a tune (vs stock air box)

 

The air box it's self (part of intake around filter) was restrictive, but the airbox mod (cut holes in airbox there is a how-to iirc) will have the same impact as buying an aftermarket. The aftermarket ones might be a bit louder than the modified stock box.