Cold air Intake? - Not a Joke or Noob question

hey! relax, dave. at least don't tell them to drive their prius off a cliff. get em to borrow an suv from a small d!¢ҝəđ friend first. (all those suv drivers got small d__ks)

 

There's no delusion like self delusion :_> Show us the dynamometer and tailpipe emissions data.

 

actually, those 4 holes are water drains. the air inlet is in the engine compartment where part #11 attaches to #8. so it is sucking in hot air from just under the rf corner of the hood. #11 looks to me to be restrictive; pulling off #13 should allow more cooler air in, but heaven forbid you run through a deep puddle at speed. the filter probably doesn't like being wet, even if water doesn't get into the maf.

 

Your "baffle", item 13 is called a resonator, more precisely a Helmholtz Resonator. They are normally plumbed into the side of an air intake system to tune out noise or sometimes to smooth out air flow at certain engine speeds. They don't restrict airflow because they aren't normally in the flow path. They may actually improve airflow over a narrow engine speed range by smoothing out the airflow.

Those small hole in the bottom are probably just moisture drain holes.

 

Dude I understand your excitement but really there's nothing there except a louder intake. Most cars have intake resonators. It makes them quieter and helps remove intake turbulence if you come off the pedal real fast or wot
like 650 says.

And as far as getting to P & G quicker what does that matter? You will have the same distance P & G'ing before you have to apply gas again no matter how fast you get to it. Just because I get up to speed faster to P & G that doesn't make the glide goes further.
And you stating that you approach the speed/spot to P & G faster means to me you must have more HP & torque. Noticeably more. Which is impossible. That would mean at least 10 more horsepower to notice it.
That's alot of horsepower. Do you know how much money you have to spend to get 10 extra horsepower out of a modern car?Its like trying to make our cars handle better. Expensive.
But anyway keep trying. Its fun to try stuff on our cars.

 

Since you aren't getting close to WOT, the ICE is not starved for air. Any gains you make reducing intake restrictions are compensated for by the partially closed throttle plate. This is just simple physics. Removing intake restrictions is only meaningful at or near WOT.

As for the Corolla, a real hypermiler like Wayne Gerdes can do wonders with P&G with any car. He got 59 mpg in a plain old Accord.

Tom

 

I spent a couple of years as a test engineer, including vehicle performance testing. I've also modified air intake systems. Despite having made accurate performance measurements that showed no improvement in performance, my seat of the pants impression was that the mods made the car accelerate better. I can really understand how someone with no instrumented performance background can get fooled into thinking they are getting more performance when they aren't.

 

Not only that, isn't the response time of the A/F sensor pretty fast and will adjust the mix along with the MAF sensor?! At the very least if this mod did work, your fuel trims should maybe read differently, is that still the same?

 

Never underestimate the power of the placebo effect. My car is noticeably smoother and drives better after I wash it.

Tom

 

Do you have any pictures of this or could u snap one? I'd like to know more about this also...

 

The throttle body heat is there to prevent throttle body icing in cold weather, not vapor lock. It also helps a bit with fuel atomization because of the warmer intake air. Fortunately, neither of those matters much when it's warm-hot out.

 

Lol I took this junk out long ago.

 

No, to answer your question..it won't... at least it hasn't blown up mine....YET.

I wanted to see how hard/easy it was to pull my headlights last night because i plan on baking/blacking them out soon. Seriously, no kidding, I had both OEM HID headlight assembles out in 5-7 min. HA! it was great. While i had the passenger side out, i did remove the baffle/resonator..whatever you want to call it. Since it is so easy to remove, I will put it back in for testing once i purchase the Kiwi Bluetooth OBDII adapter and can log some diagnostics. From the first drive, I can already tell you it feels just Dave09Prius said, the car doesn't have to work so hard to accelerate at any speed. Can't prove that there was a hp increase or mpg decrease until I can log the results. There isn't a noticeable difference in engine noise either. Haven't noticed a drop or increase in MPG either, but i've only driven to work since the removal. So far...so good, i like the 'feeling' that it is accelerating faster/easier.

 

By accelerating faster, do you mean that it has more acceleration at full throttle, or that it takes less throttle for a given amount of acceleration?

For a normally aspirated engine like that in the Prius, the only way to control power output is restrict the air intake. Regardless of what sort of air intake system you use, for a given power output less than WOT, something is restricting the air intake. Normally this is the throttle plate.

Reducing air flow restrictions upstream only means that you will use a more restricted throttle plate setting for a given amount of power. It won't increase efficiency.

WOT, on the other hand, is a different issue. At WOT the throttle plate is full open. Reducing upstream restrictions will allow for more power, assuming the engine is capable of using the additional airflow.

Tom

 

Currently I know that i don't have to press the gas pedal down as much to get the car to accelerate as quick as before with WOT. Or so it 'feels' like the freshly clean car going feelin faster than the dirty one. lol - Still need to log some results before this is more clear. Or if anyone wants to try, removing the restriction from any Gen2 takes less than 15 from start to finish -all done with a 10mm socket and a philips screwdriver.

 

The prius didnt blow up.. sorry doesnt do that.. I have other mods that could make it blow up LOL


i say yes there is a difference, that being positive .. but there is another piece 2 pieces you need to remove.. 1 get rid of completely .. even if its against the Toyota book.. and 2. replace something.

i see and feel more acceleration with Wide Open Throttle *WOT..... but thats me.. I drive my price like its a race car.. that i mean with cornering .. cant do much on a straight away..

i also modified the Throttle it self for more power without sacrificing the MPG.. i made it gain more without trying.. yea i can have green on my Battery meter when driving.. most of you unless your a plug in .. rarely see the "Green" bars when driving on your Battery meter LOL

One last thing, ive modded my throttle plate also.