I am the proud new owner of a Scion xB 2004 and love it, but I want a little more horsepower out of it and was wondering about the Scion branded Cold Air Induction system. Does anyone know how much power can be gained from this system and is there a hit in fuel economy? I have had my xB for 2 weeks now and am averaging about 32MPG and would like to keep it there. I had to opt for the automatic transmission because I am tired of shifting gears.
11-23-2004, 07:32 AM
I dont know about that particular CAI, but any intake mod will probably give you abou 5 horses. and itll hurt your fuel economy a little.
colder air>denser air>more air to burn>more used per stroke
11-23-2004, 08:18 AM
If you add the K&N filter and mod the stock box and add some flex tubing to the bottom of the box to get cold air from in front of the drivers side fog light. It shouldn't hurt your fuel mileage at all, if anything it should go even higher. Mine did!
11-23-2004, 12:06 PM
I'd agree with the suggestion to add a drop-in K&N or similar filter, and mod the airbox with a "ram air" type of hose. Remove the stock air intake piece, which has a very small opening there behind the left headlight. Take some flex ducting, and route that hose from the bottom of the airbox to the front. Mine goes to the middle grill, right next to the horn. I had to bend the horn mount to fit the hose, but it moves pretty easily. I'm not sure, but I think I used 3" flex ducting. It's cheap, and remember to get an appropriate hose clamp to secure it to the airbox.
My mod was a little different, in that I put a Uni dual-stage foam filter on the end, there at the grill, and removed the filter completely from the airbox. I put in some black window screen mesh between the airbox halves, to catch anything that might make its way into the intake system. I'd like to think that I achieved a combination "ram air/CAI" type of effect with this mod, and so far the rain hasn't presented any problems. Nothing like getting some cold outside air force-fed into the intake system!
11-23-2004, 02:27 PM
Thanks for the info. I will toy around with it and see what happens :)
11-24-2004, 03:04 AM
EXACTLY, It's cheap and a real improvement that does basically the same thingas the pricey and pretty CAI. You could spend the money, BUT WHY???
11-24-2004, 10:13 AM
I got bored and bought the short ram cold air intake. I like it so far.
11-25-2004, 04:32 PM
I also bought the CAI rather than making my owne, but then again I am all about show, and go, You can also fabricate one out of some pvc piping which is a little beter than flex.The key thing to remember is the smoother the pipe the better its all about the flow of teh air, but the engin can only take it as fast as it can get rid of it, so unless you up the exhaust pipe it woln't improove the situation all that much after all the excaping exhaust gets bottle necked trying to get out. I did for my honda back in the day, its prety easy, and you can add a low voltage but high speed fan it the pipe and it will help to shove air in aswell, kinda like a home made super charger, just not as powerful as the real thing. To all you out there who want to fab your own parts good luck, and more props, I understand that not all people want to or have the money to spend on the name brand developed, engineered, and tested parts, I was there once, but I am headed in a totally different direction with this car, I am have and intend to continue to show it.
11-25-2004, 08:09 PM
I bought a K&N CAI for my xA last week from vividracing (check the sponsor area). Great service and amazing price! Be sure to PM them to get a good price.
11-26-2004, 08:38 AM
check this url out...
its old but it may help out as far as a general idea of gains... if anything, i'd like to see products that shift the power band closer to the lower-middle mid range (4000-4500rpm)...
11-26-2004, 05:15 PM
I have a short ram and it did not hurt the mileage at all. In fact it increases the mileage by about 1-2 mpg. You also gain more hp and torque.
11-27-2004, 01:57 PM
The CAI is going to increase your gas mileage if you drive it the same way you do now. The engine is not working as hard. What you have to remember is that when most people get more horsepower they drive harder. As far as the price of the AEM CAI, it is not that bad. There are better prices out there, but this CAI system was set up for this car and it has a way to keep water out of the engine that is pateneted by them. Just a thought. You get what you pay for.....
11-27-2004, 08:39 PM
The K&N Typhoon CAI has a drycharger, which islike a cover that goes over the filter to keep out water as well.
The AEM has a bypass value which goes inbetween the filter and the tubing which releases any water that may enter the the charger.