Hey guys !
First things first - this is something i have done to my troll for about....40km or so. No long term testing, i admit, but results can be observed right away. And not to forget, my appologies for my bad English.
Considerations:
Perhaps you (or at least many of you) are aware of the fact that after blocking EGR, MAF voltage rises to from 1.6V - 2.0V (as it should be by default) to 2.2V - 2.3V. You can tell that by the way it smells like unburnt diesel at idle. Talking to my friend Chaz, i tried to solve this issues, but with a small amount of cash and effort. So, after bugging Chaz for a while, he told me to use a resistance. And so i did.
Previous attempts
In this summer, i bought a Donatorstore black box. I thought that was the solution. Nothing far from the truth. After fitting that box, lack of power occured. BIG TIME. A very light hill i used to make it to the top using 5th gear, after fitting the DonatorStore thing i had to use 3rd gear. Adjusted and readjusted, no improovment at all. So, obviously i took it off. But i kept in mind where it connects....
First shot
I tried to use a 10ohms resistance, and put it in-line with the wire that goes from the MAF to ECU. No change. Then i remembered how DonatorStore thing altered the signal. The wire that carries 5V. Still no change. What to do next ?
Second shot
After an unsuccessfull attempt, i tried a bigger resistance. 100ohms. Same steps followed...no improovement. I started to get a little angry, because the weather got very cold, and i had no result. My back started to send signals (i have been diagnosed with hernia), freezing and the damn thing wont work.
....and STRIKE
Going back into my office, my eyes stopped on a malfunctioning PC power supply. I torn it apart, and found there a variable resistance of 1000Ohms, or 1KOhm. At first, i thought this thing is too big, but since i had nothing to loose, i gave it a shot.....AND STRIKE !
Set to minimum value no change....but when you start to turn the knob, EcuTalk starts to read different values....
Here is a shot of EcuTalk at idle before
And here is a shot of EcuTalk at idle after
So...it works. Took the car for a ride to test the new setup. I admit it is a bit lazy (just a bit) than before, but no ECU reset performed and i did 5000+km (wait.....about 10.000km) with the MAF showing a higher voltage than normal. But, what is more important....no more limp mode. No matter how hard i pushed it, no limp mode occured.
So .... short story:
- locate the 5V wire.
- insert in-line a 1KOhmn variable resistance
- tune it until you get a 1.8V - 1.9V reading.
I did not measure the resistance in order to find the exact value, for the moment i'd like to keep it variable. Did not take any picture with the resistance mounted, as, just like explained to Chaz it is a "gipsy thing"....
PS. I noticed here is full of skilled people and what an amazing work did they to their trolls, so i thought my pictures will be an insult. Advised by Chaz i considered this would be a mod to help the Patrol perform even better.
First things first - this is something i have done to my troll for about....40km or so. No long term testing, i admit, but results can be observed right away. And not to forget, my appologies for my bad English.
Considerations:
Perhaps you (or at least many of you) are aware of the fact that after blocking EGR, MAF voltage rises to from 1.6V - 2.0V (as it should be by default) to 2.2V - 2.3V. You can tell that by the way it smells like unburnt diesel at idle. Talking to my friend Chaz, i tried to solve this issues, but with a small amount of cash and effort. So, after bugging Chaz for a while, he told me to use a resistance. And so i did.
Previous attempts
In this summer, i bought a Donatorstore black box. I thought that was the solution. Nothing far from the truth. After fitting that box, lack of power occured. BIG TIME. A very light hill i used to make it to the top using 5th gear, after fitting the DonatorStore thing i had to use 3rd gear. Adjusted and readjusted, no improovment at all. So, obviously i took it off. But i kept in mind where it connects....
First shot
I tried to use a 10ohms resistance, and put it in-line with the wire that goes from the MAF to ECU. No change. Then i remembered how DonatorStore thing altered the signal. The wire that carries 5V. Still no change. What to do next ?
Second shot
After an unsuccessfull attempt, i tried a bigger resistance. 100ohms. Same steps followed...no improovement. I started to get a little angry, because the weather got very cold, and i had no result. My back started to send signals (i have been diagnosed with hernia), freezing and the damn thing wont work.
....and STRIKE
Going back into my office, my eyes stopped on a malfunctioning PC power supply. I torn it apart, and found there a variable resistance of 1000Ohms, or 1KOhm. At first, i thought this thing is too big, but since i had nothing to loose, i gave it a shot.....AND STRIKE !
Set to minimum value no change....but when you start to turn the knob, EcuTalk starts to read different values....
Here is a shot of EcuTalk at idle before

And here is a shot of EcuTalk at idle after

So...it works. Took the car for a ride to test the new setup. I admit it is a bit lazy (just a bit) than before, but no ECU reset performed and i did 5000+km (wait.....about 10.000km) with the MAF showing a higher voltage than normal. But, what is more important....no more limp mode. No matter how hard i pushed it, no limp mode occured.
So .... short story:
- locate the 5V wire.
- insert in-line a 1KOhmn variable resistance
- tune it until you get a 1.8V - 1.9V reading.
I did not measure the resistance in order to find the exact value, for the moment i'd like to keep it variable. Did not take any picture with the resistance mounted, as, just like explained to Chaz it is a "gipsy thing"....
PS. I noticed here is full of skilled people and what an amazing work did they to their trolls, so i thought my pictures will be an insult. Advised by Chaz i considered this would be a mod to help the Patrol perform even better.