DevDocTT

I have what many believe to be a collapsing intake hose issue with chipped 2001 TTQ 225's. Many have suggested replacing with a cone kit from various vendors at approximately $250. It occurred to me that I could modify the stock airbox by cutting a hole in the stock box and inserting an insulated hose down to an area of cool air. The cost of the experiment is $100 for a new air box. Am I missing something here? Why buy a kit when I can do this with the large K&N panel filter (No complaints about flow here).

Does anyone think this may be a good idea?

0TT0 BURNER

but the thread got side tracked into oblivion. You don't need to drill at all. There is an existing hose already. Near the MAF is the crankcase vent hose which runs down to the block. At the block, just attach a small K&N to ventilate (like the kind used on Harleys). If you zip tie a vacuum cleaner floor attachment into the hole in the engine compartment pan and attach it to the hose, then it will have a cold air ram affect without any damage to existing parts other than the holes for the zip ties in the lower engine compartment pan.

Lone Starr (Ivan)

I'd like to introduce some scientific method into this process before it gets a life of it's own.

Symptoms are: significant and immediate power dropoff above 5000RPM

Conditions are: overboosted/chipped 225 TT's. Are there other conditions? Ambient temperature, build date (bad part from factory?), number of miles(rubber fatigue?)

What else can you think of?

0TT0 BURNER

Good points. Extra air to stock box may have its own benefits.

DevDocTT

Could you give me a little more information?
1. Where can I get the baby K&N?
2. What type of hose did you use and where can I get it?
3. Are we talking the small floor attachment or the whopper?
4. A few installation ideas or instructions.
5. How did it work out?

Thanks in advance!

Fastlane

if you route a hose from inside the wheel well or somewhere else low you will suck up water into the intake. As far as I know, engines don't run too well on water and gasoline!

Jason Chen

But its for the 180. I never seen a 225 intake tho.

<img src="http://pictureposter.audiworld.com/4297/prmintake.jpg">
<img src="http://pictureposter.audiworld.com/4297/ttcoldairintake.jpg">

DevDocTT

I dont think that would be a problem. I am not sealing off the original intake. My thoughts are that it would rather take air from the stock hole than suck water up a 24 inche hose. Am I wrong in this assumption?

TTschwing

Devdoc....do you have a 225 or a 180? If 225, it's difficult to route air to the box. If a 180, run hose from the lower left grill intake to the snorkel area. The opening that Otto refers to is pretty small and probably won't help that much.
Here's a plan without doing any permanent damage: You want to get more air to the bottom of the air filter box (below the filter element). You can either drill a series of holes in the bottom (permanent), which is an old trick, or, from the toyota truck forum, the DECK PLATE mod. Get a 4" screw off deck plate from your local boat dealer, cut a 4" hole in the bottom of the box and try with the plate cover off. It definitely will flow more air. If you don't like it, put the deck pklate cover back on, re-assemble and no ones the wiser. Worth a shot!

Steve

DevDocTT

What is a deck plate? I am not quite sure I understand what you are suggesting. Please pass me more info. This problem is driving me nuts.