tapiasradiator05

i just got my 2009 Honda Civic Si and i was wondering if its best to go with a short ram or cold air intake system on my civic and should i go with AEM or is there something better?

chiggin

I would suggest going with a short ram intake. The difference in power gain between the short ram and cold air is marginal. Why risk hydro-lock for a marginal difference?

I have an Injen short ram in my 07 Si and it has been great. I don't know much about the other intakes, but I would recommend the Injen.

teggsr925

ive always been a fan of cold airs. and decided to go with the k&n sri. big mistake. my car gets so sluggish because of heat soak. my header just heats up everything now.

i would suggest get the injen cai. or read into modifying or doing diy intake. im thinking about going cowl induction, but in the meantime im gonna do a ram air type thing for the k&n

RICO_

Heat soak is only a major factor when the car is at a standstill at a light. When the car is in motion anywhere above 30mph there is more than enough air coming into the engine bay to filter out the hot air and get cooler air going into the intake. It only takes a few seconds for that hot air to quickly dissipate...which is why the power gains between the two intakes are extremely minimal at the upper RPM ranges.

ChargedSI

Would'nt ram or cowl induction system impact our MAF sensor enough to throw a CEL?

K5^

I don't think it would. The charge of air entering the engine bay would be in the front to rear direction, while the air intakes flow from the rear to the front. The intake would only take in as much air as it would need from the charge of air being rammed in through a cowl. At least this is my understanding of this design.

tapiasradiator05

so basically your saying short ram intake right cuz i'm not trying to change the cold air everytime it rains which is why i was gonna go with the short ram instead

K5^

Pretty much. The main benefit from swapping out the stock airbox is allow for less restrictive air flow. Imagine running a marathon while breathing in through a straw.

teggsr925

the only way u will hydrolock the motor is if u drive thru standing water more than a few inches. normal rain wont cause it, and even if ur going thru a deep puddle, just dont mash on the gas peddle. ive never had a problem with cai's

tapiasradiator05

ok i get it cool so what about headers what does everyone recommend with a good cat back exhaust?

teggsr925

i like my full vibrant. no cat. sounds good. good power gains. will have numbers in a few weeks.

Kidnkorner

Do you plan on driving thru any of this?



The bottom of the air filter on the Injen and AEM cold air intakes is 10-11" off the ground. A lot of you are paranoid. Road spray and road splash aren't going to do anything. You do realize that you can hydrolock the OE system right?

You CAN'T argue against the science of thermal dynamics, cold air intake > short ram intake. Under hood temperature is ALWAYS going to be hotter than air from out side the engine bay. it is not uncommon for air to increase up to 50º F. passing through the radiator and air conditioning condenser on a late model vehicle. The general rule of thumb is that for every 10º of temperature drop, the density (and oxygen content) increases 1 percent. It's actually more like 1.8 percent. Similarly, power increases by an equal amount.

tapiasradiator05

Lol nah I doubt it dude I live in Las Vegas so we don't get a lot of rain but I see your point I think I'm gonna go with the cai.
Now the full vibrant exhaust system where can you get that exhaust and what's the price on it?

tapiasradiator05

Lol nah I doubt it dude I live in Las Vegas so we don't get a lot of rain but I see your point I think I'm gonna go with the cai.
Now the full vibrant exhaust system where can you get that exhaust and what's the price on it?

kartman5

Try Cor Sports.com. I think it's around $550.00.

teggsr925

header is 580 on there and catback is 490 i think. i paid way less than that tho lol

chiggin

Using your numbers, we are talking about a difference between the Cold Air and Short Ram of less than 1hp. Less than 1hp is not going to make any difference, anywhere, anytime. Therefore, there really is no advantage to the Cold Air over the Short Ram.

You don't necessarily have to drive through a small pond to hydrolock your motor...S*** happens. Hydrolock could potentially happen anytime you are driving with water on the road. If you go with a Short Ram instead, you are essentially eliminating that risk. If you drive through water deep enough to hydrolock your engine with a Short Ram, then you have much bigger problems to worry about (like why the hell you thought your car was a boat).

In the end just ask yourself this....Is risking hydrolock (which means buying a new engine totally out of pocket) really worth less than 1hp extra?

Kidnkorner

You are focused on peak power numbers like a lot of other fools out there. You are way off on the power calculations. Were you multiplying 50 by .018 and came up with .9? That's 9% increase in power, hardly the 1hp you are talking about. You are focusing on the 50 degree increase of the air passing thru the radiator, what about the air being heated by the engine itself?

Again I'll say it, road splash and road spray won't do jack. I have been driving sport compact cars since 1999, driven in S and C Florida (85" anual rain fall) and while it doesn't rain a whole lot where I live now flash flooding occurs pretty quickly when it does. When "s.hit" happens it's because drivers are driving too fast for conditions, driving further than their eyes can see and/or drive thru questionable area's.

If there were truly no advantage to buying a cold air intake over a short ram companies would not produce them.

Hydrolock is covered by your insurance companies comprehensive coverage (which means your insurance company will pay for it).

tapiasradiator05

so where did you get them from?

tapiasradiator05

i see what you mean which is why i was gonna stick with the short ram so i won't have to worry about hydrolocking my engine

dirtySOHC's

wtf?

Kidnkorner

Based on the 50 degrees ONLY is roughly a 9% increase in power, nearly 18 BHP or around 13 WHP based on 30% drive train loss. (197 x .09)

FijiBlueFG2

He lives in the desert. I don't think he has to worry about mass flooding.

CAI

/thread.

FA5Clown

http://www.aj-racing.com/shop/produc...cat=386&page=2
check this out. from what ive heard its a great intake system. and its basically an upgraded stock intake i beleive. fit and finish and quality are sposed to be unbeatable.

if you have the money and there are some available id get this.

teggsr925

importdpsonline.com its a local shop to me.


that thing is so overpriced.