What do you guys think about this item:

http://cgi.ebay.com/ebaymotors/ws/eB...category=38634

 

it's a filter on a stick..,.. just like all the others

18 bux for shipping is a rip off IMO..

U live in T dot... i've seen endless ricers there, i'm sure there's lotsa shops... just look around.. i'm sure u can find something locally...

don't be afraid to cut or mod something for say an "accord" to fit... The Dremel is your friend

 

but does it improve performance?

 

no it's going to suck in hot air, get a 96 prelude cold air intake off of ebay for like 25 bucks and cut it to what you need and make a nice cai out of it.

 

no

 

The filter itself is a piece of junk. Assuming it fits, I don't see anything wrong with buying the kit, throwing the filter in the trash, and replacing it with a K&N filter.

Flat horsepower ratings on things like this are bogus. Any gains are a percentage of your current horsepower, not a fixed number. For example, let's say that intake produces a 4% hp gain over the stock system (which is probably somewhat accurate). On a modified engine that makes 350bhp, that would equate to 14hp, so the manufacturer then advertises a gain of "up to 14hp". However, if you put that intake on a 200bhp engine, it will only gain 8hp.

There are many factors involved in how much hp gain you will actually get. The hot air factor that you hear on this forum is extremely over-hyped due to a bombardment of CAI advertising in ricer magazines, and only has a significant impact on performance under about 35mph.

It is probably better to make your own intake setup, but if you would rather have a kit, these two are good, and come with top-notch filters that won't disentigrate and destroy your engine:
http://www.rx7store.net/index.asp?Pa...ROD&ProdID=347
http://www.rx7.com/store/rx7/fcintake.html

 

since when has sucking in hot air into the intake helped out any car? hum....news to me.

 

The hype isn't about hot air hurting performance, the hype is about the amount of hot air in the engine bay that gets sucked into the engine. If you monitor the intake manifold air temperature on an RX-7 with a non-CAI cone filter, you will see that the temperature is usually only about 10degF above ambient at idle, and that the temperature gradually reduces to ambient as the car begins moving and the engine airflow increases. While a CAI intake DOES improve performance (if designed properly), it is not some magical hp adder, and a lot of the gains advertised are due to the high-flow air filter rather than the "cold" air.

 

The understanding I have seems logical to me. When sitting or under 35MPH ( posted above and used for example) there will be hot air in the engine compartment. Once at speed the air is flowing through the compartment and constantly feeding cooler air and pushing the hot air out.

 

I guess but there are reasons the factory of most cars makes a cold air inlet, maybe it's for under 35mph however I don't know about you guys but my engine compartment gets hot even after 35mph. But yall make a valid point.

 

Either way, with that kit, how would you attach it to your AFM? I would think you would need something more like this: http://cgi.ebay.com/ebaymotors/ws/eB...961381957&rd=1

I'm going to mod on the air filter that I had on my 1st gen Eclipse, since they come stock with a round air filter tank, and I had a nice K&N in there arleady, I'm just going to open up the housing (hack out most of the metal)

 

I believe the kits on ebay are for 89-92 models only, these models did not require one of those adapter plates.

 

Also, look at the airflow rate of the engine vs. the volume of the engine bay. So what is the static air volume of the engine bay, maybe 25 cubic feet? Even at only 4,000rpm an NA rotary engine will suck in this much air about every 10 seconds. The CAI vendors want you to think that the engine bay is a breeding ground for hot air that overwhelms the small airflow of the engine. While this is somewhat true at idle, during normal operation the engine is an air-sucking monster. For every gallon of gasoline consumed by the engine, about 70-90 lbs of air is consumed. For those of you who think that air weighs nothing, just try and imagine how much air it takes to weigh 70-90 lbs.

The main point is to try and keep the engine from sucking air directly from the discharge of the radiator, intercooler, oil cooler, or other heat exchanger. A simple heat shield or good ducting will accomplish this, although a well-designed CAI box is a little more efficient, and may allow for a little bit of ram air effect at high speed.

Does your compartment get hot, or does your intake air get hot even after 35mph?

Yes, only the 86-88 requires the adapter because the AFM is square instead of round like the 89-92 AFM. Since soulja77 has a S5 RX-7, this is not a factor.

 

what about those turbonators? electrical fan like devices that are placed right after the airfilter to draw in more air

 

^^ Those things are garbage - i remember reading someone tested them, it was a reduction in power, was more of an air restriction than a gain.

 

Canadian Tire and Napa have decent prices on K&N filters (eg. $60CDN). Determine what dimensions will fit, go to K&Ns website and determine the part number. Go to Rona or Home Depot and buy some piping, couplers and clamps.

 

They can't flow enough air, and actually will become a restriction in the system once the airflow increases. There isn't much point in boosting only at idle, lol.