cold air intake problem

[devinslawsby]

Ya so I installed an intake about two weeks ago and it has been giving me lots of problems such as;
1. the car has become very slow
2. the car is now overrevving through gears (I have an automatic)
3. the turbo is not producing any psi
4. my acceleration is really sad

I put on a k&n filter with some 3in pipes(not a kit)

also I was wondering if i am going to have any problems with hydrolocking, because the filter is located in the dip in the front of the engine bay.


Thank you so much for your input

[Critterman]

It's probably your MAF sensor, the airflow isn't right, most of the kits are designed around the sensor. The one thing you don't have to worry about is water getting into it unless you drive it into deep water, normal water spray isn't going to be an issue. your pipes & MAF sensor are.

[P.Gadget]

As Critterman says " It's probably the MAF sensor"
It sounds like you have a 2.0 because you said you had no boost. If so you may have more luck in another section of the forum.

Check to make sure the window in the MAF sensor is facing forwards.

You may have contaminated the MAF sensor with oil from the K&N filter.It may need to be cleaned with denatured alcohol or MAF sensor cleaner.

If the MAF sensor is mounted in a 3" tube it will not be getting an accurate reading. Where the sensor is mounted the tube needs to be the same size as the OEM tube.

[Dave@ddmworks]

Originally Posted by P.Gadget As Critterman says " It's probably the MAF sensor" It sounds like you have a 2.0 because you said you had no boost. If so you may have more luck in another section of the forum. Check to make sure the window in the MAF sensor is facing forwards. You may have contaminated the MAF sensor with oil from the K&N filter.It may need to be cleaned with denatured alcohol or MAF sensor cleaner. If the MAF sensor is mounted in a 3" tube it will not be getting an accurate reading. Where the sensor is mounted the tube needs to be the same size as the OEM tube.

The stock size for the GXP's intake is 3" OD with .065" wall thickness, the 2.4L uses a 2.75" OD tube with .065" wall thickness. However you need to make sure that the MAF is not right after a bend, or to close to the filter (at least 6-8" after the filter) or turbulence will mess up the MAF reading. Also make sure that the arrow on the MAF is pointed in the direction of airflow. A picture of the setup might help us diagnose what is going on with it also.

Thanks,
Dave

[devinslawsby]

my digital camera is broken so i cant post pictures but what i did was i cut the tube where the intake tube connects to the filter box and connected it to a 3in tube and a 3in 60 degree elbow. Im almost positive that its the sensor and a cleaned it twice and nothing has changed. The weird thing is that my car will work perfectally for about five to ten mins but then it will randomly stop working. The car acts nomally at idle and just randomly stops working.

Ive looked around for sensors but i cannot find any, and judging by the average cost of a sensor i would like to avoid buying a new one.


thanks for the previous imput

[lacajun]

devinslawsby,
I did the same thing you did and cut out the tube from the original airbox. I thought I could use tubing and fab my own intake--WRONG!!!
I experienced the same problems with the MAF. The airflow presented to the MAF sensor is not uniform and it is causing erratic sensor readings. I purchased a GMPP cold air intake and used the same MAF - PROBLEM SOLVED!!
The sensor placement on the cold air intake was at the intake end next to the air filter and the tube was tapered to smooth the airflow. An electrical harness extension was provided in the kit from the original connector to the new remote position.
In all probability, there is nothing wrong with your MAF and after clearing codes and installing in original position or a manufactured CAI, normal performance will return.

[devinslawsby]

thank you so much lacajun you saved me so much time, money, and stress. what a relief.