No gain on Turbo Diesel

[pdai11]

I have a 98 Saab 93 2.2 turbo diesel and just fitted a large 13 plate dry cell producing just over 1 liter per minute. after driving it for two weeks, no mileage gain but i had decreased on 2-4 mpg. I had connected the output hose onto the air intake 4 inches before the turbo. Is this the correct connection or should i connect it nearer to the airbox before or after the MAF sensor ?

[North]

I'm fairly new at this too, but it seems to me that your vehicle is new enough to have an O2 sensor. It is my understanding that without an EFIE the sensor is probably telling the computer that you are not running enough fuel, so increasing the amount injected
Are you using an EFIE? If you have two or more O2 sensor you will need to alter the all I believe.

David J

[EddieRock]

North is correct in regards to O2 sensors. If you have Electronic Fuel Injection and install a HHO kit, you need to address the O2 sensors with an EFIE.

What happens is the HHO makes the exhaust have more oxygen because of the production of HHO from H2O. This extra oxygen in the exaust will pass by the O2 sensors and they will tell the engine that it is NOT getting enough fuel. This causes more fuel to be injected into the vehicle and the end result is no fuel gain when the HHO unit is installed.

First, Verify that you have O2 sensors and then buy an EFIE and install it. They are only $59 unless you have more than one O2 sensor.

All should be good then.

EddieRock