topic says it all. i have my CAI rigged as a short ram intake, someone said i will lose HP because im taking in all the hot air is this true?

 

no

 

im thinking yes, how much? little...

 

wells, from what i learned. . short rams are better for auto's while the cai are better for manual trans. cars. You don't loose any hp. from installing the intake. . it just depends on what kinda of intake you have i guess and how prop. it's installed

 

i havve a 2 piece CAI but running on short ram right now... haven't putted on the other piece cause been to lazy but the short ram feels good... deep growl and i can feel the difference between stock and short ram... if you hate sucking in hot air on a short ram just get some laundry tubing and vent some cool air in or if you still have the stock bottom piece of your air box i'm pretty sure that draws in cool air also

 

with the cold air, you lose low end torque and throttle response

 

That's odd, i had about a 5 hp and 10 ft-lb torque gain with my CAI in the lower RPM range compared to my short-ram setup. my short ram setup did provide better throttle response, but it was still slower.

 

interesting info. i have a AEM cai right now on my gs-r and was actually thinking of going down a step to a short ram just b/c of the better sound. i know that sounds idiotic, but the way i see it...you're not making crazy gains of the intake as it is..so might as well have that added growl from the short ram and it doesn't seem like detonation is that big of a prolem..at least i haven't heard of anyone complaining about it ruining their engine. any comments? i might just start a thread about this.

 

I have am aem short ram connected to a diy icebox. I was just messing around the other day and decided to take off the cover of the diy icebox. It was louder, but it seemed like the throttle response was better and the shifting was smoother (automatic ).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by omekone &raquo;</TD></TR><TR><TD CLASS="quote">topic says it all. i have my CAI rigged as a short ram intake, someone said i will lose HP because im taking in all the hot air is this true?</TD></TR></TABLE>

If you read and search carefully, you will find advantages of a short RAM over a cai. Like you, I also have my aem CAI "rigged as a short ram intake." My reason for doing that was because of all the problems the CAI has caused me (cannot exclude to mention my motor almost blowing due to little amounts of ingested water ).

If you ask why I still did it (rig my CAI to become a short ram), I do not have any front fender linings , yes I know its quite dumb not to have it and run a CAI setup, however, with my suspension and wheel setup, I need it off so that I don't rub and wear my tires quicker.

Anyways---omekone, how did you rig yours? I hacksawed mine to my desired point then filed the edges so the tiny little metal hacksawed particles wont get sucked into my engine. I still used the air filter it came with *I just cleaned it with the K&N air filter cleaner kit (best $10.00 I ever invested). Do you have any pics of your rigged CAI as a short ram?

And for those who prefer fashion over function---BTW---which includes the sounds an intake makes ----- There are no noticable differences (if I can remember correctly) between my old CAI setup and currently with my rigged CAI setup as a short ram. Oh!, and my butt-dyno tells me that my midrange has improved ---mwahahah.

cheers
NRG

 

BTW that PREVIOUS POST (LOOK UP ---by civicjdmgsr was WRITTEN BY ME ) ---- I just forgot to sign out of his name.

for me.

cheers
NRG

 

short ram will give you more torque and beter throttle response than a CAI, because its a shorter distance to the IM. CAI , while not adding as much torque, will give you more power, because it is getting cold air, instead of hot engine air. Your best bet......short ram with a hood scoop

 

Ugh.

If you look at two dynos compairing same diameter intakes, one being short ram the other being CAI...

The only difference is the AEM hump of power from 4 - 5k rpm on the CAI.

This is all because of volumetric effeciency.
The longer the piping, the faster the air velocity is. Because the CAI produces faster air velocity than a short ram, volumetric effeciency occurs much earlier and causes that hump of power everyones buttdyno loves so much.

The short ram on the other hand, the air velocity is lower. So it takes longer to reach volumetric effeciency. Which is why you see high reving heavy NA motors running Short ram intakes. They need the short ram to produce volumetric effeciency higher in the RPM range so it occurs durring their powerband.

 

Good post dude.

The butt dyno commonly misinterprets that hump as a ton of power...which it may be a nice 10whp/10ftlb gain, but for about 100RPM.

 

omg... here we go.


ever look at a type r manifold compared to a b20? really you have? then obviously you know that big fat and short is better for high rpm ranges... noticed the b20s are skinny but extremely long? they provide great torque...use that knowledge to think about intakes.

now...the OPTIMUM setup would be a ram effect (colder air...like the cai) on a short ram intake (for high end horsepower), but its all how you want your car to perform. you be the judge.

 

I think StyleTeg summed it up best with "Ughh". Some of the "advice" that you guys are posting is the farthest thing from the truth.

To illustrate StyleTeg's of the only significant difference being the AEM hump in the midrange:

This is off of a B-series motor using a single runner IM. Only difference was the addition of the 3" CAI (versus the old setup of a 3" SRI). Notice that in the higher rpms they perform very similar.

You'll see the short ram intakes start to outperform the CAI after 8,000 rpms.

 

i understand cai suck in cooler air from outside the engine bay but even with a short ram your not pulling hot air all the time. Once your car is moving there is cool outside air flowing through your engine bay.

 

yea, i don't think a dyno can really tell you the HP you are gaining or losing by switching to a short ram, b/c once the car is moving the underhood temps are changed alot from the car just redlining on a dyno. Even the fan can't create the underhood temps you would have if you were driving at 40mph w/ a short ram intake. I say just get a nice filter like the apexi filter and prop it up on short piping and call it a day

 

The power curve resultant of the intake has to do with the piping diameter and length of the intake pipe....not the "ram air" effect on the street/track being better greater or less with a certain type of intake.

 

In my experiences with my short ram intake, it started off with good midrange pull, but as soon as the engine got up to operating temp, I feel like it lost a lot of power. And i really don't think that too much air actually gets into the engine bay while goin at interstate speeds. Quite often i would get home from work, goin an average speed of 60 and i could barely hold my hand on the piping ot the intake cause it was so hot. I got inspired not to long ago and built my own cold air intake using my 3" ram air tube, and some flexpipe. Now i notice that it has the same effect on the butt dyno as the short ram did, but now after the engine heats up, it still has loads of power and throttle responce. I drove it for a while the other day, let the engine warm up, and then grabbed hold of the piping and i couldn't belive how cool it was. It was amazing.
So to wrap it up, im extremely preased with my DIY 3" CAI. Even if it just added hp to the mental dyno, it was worth the $12 for supplies and the peice of mind. After all, isn't hot air bad for any engine when compared to colder air?
My Two Cents.

 

depends on many many factors

in general, if your motor is built, you better get short ram

if your motor is stock, i'd stick with cai

 

I switched to a CAI intake a few weeks ago and I am thinking about switching back to my Short ram because I don't want the risk of water anymore. Plus I also have a fully built engine and my Cams will be here on wednesday so the short ram will actually benefit me because ill be raising my redline.

 

WRONG.....
with CAI u lose high end power and GAIN low end (also chance of hydro lock)
Short ram you gain quicker throttle response and high end power

On a hot day (especially if it is humid) you will lose some power since you are suckin in hot air, remember cold air is more dense... u know the rest.

All you have to do is re-route some cold air to the filter and your set!
and that will make up for the slugish hot days.

I recomend short ram or the icebox/mugen setup.

 

i just switched from a ls cold air intake to an stock air box with stock arm and no resonator to a type r short ram....outta all of them im feelin the type r short ram 3 inch diameter...i feel alot better throttle response and gains in 1st 2nd and 3rd gear i have a 99 ls btw

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrmonk &raquo;</TD></TR><TR><TD CLASS="quote">WRONG.....
with CAI u lose high end power and GAIN low end (also chance of hydro lock)
Short ram you gain quicker throttle response and high end power

</TD></TR></TABLE>

there is no such thing as a wrong or right answer for this one. You can't generalize that short ram will always make more power.

On my stock gsr, when i switched from cai to short ram, power was lost in ALL rpms