NA air filter

[cdti]

My car came fitted with aftermarket air filter, and theres a blue silicon vacuum pipe that connects to a hole on the elbow. If the end is blocked, the engine cuts out.

Is this a standard fit thing? Does it matter if its not connected, i.e. dangling free

Also, does it matter if the temperature probe is connected or not to the elbow?

[Mr2_NA]

Get a pic

If there's a air flow device it was put there for a reason when I replced my standard box I kept the standard pipe closest to the engine so din't change anything but the filter and made my own hole for the meter.

[Si_Crewe]

Regarding the temperature sensor...

Those cheap "chips" to boost horsepower simply work by altering the resistance across the sensor slightly so the engine thinks it's running 1 degree cooler and increases power to suit.

With that in mind, the difference between the interior temperature of the engine bay and the actual temperature of the inlet air is often going to be pretty huge.

Personal experience bears this out.
My car was running "okayish" but then, when I noticed somebody'd wedged the temp sensor underneath the airbox rather than actually sticking it into the hole provided for it, when I poked it back into the airbox, the car was noticeably quicker under acceleration.

FWIW, this isn't just a placebo effect. I have one of those G-Tech performance gizmo's and it predicts my car is making 20BHP more in 4th-gear acceleration now than it was when the sensor was misplaced.
I suspect that's a little optimistic but I find acceleration is now "sharp" where it was only "smooth" before.

Only other thing is that you need to make sure the sensor is actually IN the air flow.
If you're talking about jamming it into the piping tee I'm thinking of, I'm not sure it'll be all the way into the air flow.
If it was me I'd be thinking about drilling a hole through the filter back plate and then fitting a suitable grommet and stuffing the sensor into there.

[M AIR DVA]

good idea

so if i put my temp sensor which is attached to the engine lid bonnet thing up a toms air scoop it will make a bit more horsepower and do no potential damage.

NOTE its NOT a turbo and its a naturally aspiration engine.

[Si_Crewe]

Noooo...

There's 2 temp sensors.
One lives up underneath the engine lid.
The other one is supposed to be plumbed into the airbox.

It's the 2nd one that the ECU uses to figure out how dense the air is.
THAT is the one that should be fixed into whatever air filter you've got installed.

I kinda got the idea you were saying that sensor is currently poking through a tee in the hose, where it might not be in the air flow.
In that case you should think about moving it to the filter back plate or summat.