Crawford Eco Block

Tank 4

Tank 4 with Ecoblock.

Here are the results from the fourth tank of gas after installing the Ecoblock.

100% city.

282.5 miles / 17.99 gallons = 15.7 mpg

Drive time was 15:36 - average speed is only 18 miles per hour. :lookout: Geez.

Two more tanks then I will remove it and drive 6 tanks without the Ecoblock installed.
 

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I have techstream. Does anyone know if techstream can provide data that'll help us w/ this product?

I don’t know about techstream, but with a simple OBD2 dongle you can pull fuel trims and lambda (air fuel ratio from the O2 sensors) as you’re accelerating or cruising which will tell you if the ecoblock is able to trick the ECU permanently or not.
 
I don’t know about techstream, but with a simple OBD2 dongle you can pull fuel trims and lambda (air fuel ratio from the O2 sensors) as you’re accelerating or cruising which will tell you if the ecoblock is able to trick the ECU permanently or not.

what app would work best? torque pro?
 
I don’t know about techstream, but with a simple OBD2 dongle you can pull fuel trims and lambda (air fuel ratio from the O2 sensors) as you’re accelerating or cruising which will tell you if the ecoblock is able to trick the ECU permanently or not.

The fuel trim function of the ECU is dependent on the air fuel ratio supplied by the Lambda sensor. The learning function of the ECU is also dependent on the Lambda sensor and will give a long term / short term trim based on the change needed to get the air fuel ratio back to the AFR setting in the preset Lambda fueling table. The Eco Block cannot trick the ECU into ignoring the fuel trims needed to get the air fuel ratio back to the setting in the Lambda fueling table, instead it is smart enough to make this long term change by its self.

For this reason the air fuel ratio will never be "lean" as some are quick to say... instead the air fuel ratio will be exactly where the factory set it to be which is around 14.7 to 1 AFR which is the green zone on the graph. And when the ECU changes to the open loop fueling mode the air fuel ratio will go to a very rich setting closer to 11.3 to 1 AFR.

Now when the Eco Block is installed, the air fuel ratio will go into the red zone on the graph for the best torque and power numbers. These are very simple facts that can be easily checked / verified with the OBD2 scanner mo mo mentioned... no need to trust or believe anyone's comments on this thread, including mine!

As I have stated many times before, the Eco Block only changes the air fuel ratio when the ECU is in the open loop fueling mode, so the negative effects others have stated about the increased emissions and damage to the catalytic converters are just based on personal opinion and not any real facts. When you are guessing at what you think the air fuel ratio will be with the Eco Block installed it is very easy to have a personal opinion that is not factual.

Thanks for your time, Quirt
 

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The fuel trim function of the ECU is dependent on the air fuel ratio supplied by the Lambda sensor. The learning function of the ECU is also dependent on the Lambda sensor and will give a long term / short term trim based on the change needed to get the air fuel ratio back to the AFR setting in the preset Lambda fueling table. The Eco Block cannot trick the ECU into ignoring the fuel trims needed to get the air fuel ratio back to the setting in the Lambda fueling table, instead it is smart enough to make this long term change by its self.

For this reason the air fuel ratio will never be "lean" as some are quick to say... instead the air fuel ratio will be exactly where the factory set it to be which is around 14.7 to 1 AFR which is the green zone on the graph. And when the ECU changes to the open loop fueling mode the air fuel ratio will go to a very rich setting closer to 11.3 to 1 AFR.

Now when the Eco Block is installed, the air fuel ratio will go into the red zone on the graph for the best torque and power numbers. These are very simple facts that can be easily checked / verified with the OBD2 scanner mo mo mentioned... no need to trust or believe anyone's comments on this thread, including mine!

As I have stated many times before, the Eco Block only changes the air fuel ratio when the ECU is in the open loop fueling mode, so the negative effects others have stated about the increased emissions and damage to the catalytic converters are just based on personal opinion and not any real facts. When you are guessing at what you think the air fuel ratio will be with the Eco Block installed it is very easy to have a personal opinion that is not factual.

Thanks for your time, Quirt


Non performance question: So during a cold start, which is open loop, will the eco block adjust for the red zone or does the ecu simply ignore maf input during a cold start altogether.
 
Non performance question: So during a cold start, which is open loop, will the eco block adjust for the red zone or does the ecu simply ignore maf input during a cold start altogether.

Good question... I assume you mean during idle while in the cold start mode, if so then the AFR will be closer to 13 /13.5 to 1 and when the motor gets warm it will be at 14.7 to 1 without the Eco Block. With the Eco Block installed you will see a leaner AFR in the cold start mode somewhere between 13.3 and 13.8 to 1.

The Eco Block trims the AFR by a set percentage while in open loop as opposed targeting the red zone. The red zone is the desired AFR at high loads where the green zone is the desired AFR at light loads, and the AFR varies between these two ratios depending on the amount of load / throttle applied. I added a basic AFR graph for as an example of how the AFR changes throughout the RPM and load points.

Quirt
 

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Tank 5

Tank 5 with Ecoblock.

Here are the results from the fourth tank of gas after installing the Ecoblock.

100% city.

304.1 miles / 19.47 gallons = 15.62 mpg

Drive time was 15:39 - I can't believe how much time I am spending in traffic. I need to get this on the interstate for a trip.

One more tank then I will remove it and drive 6 tanks without the Ecoblock installed.
 

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Non performance question: So during a cold start, which is open loop, will the eco block adjust for the red zone or does the ecu simply ignore maf input during a cold start altogether.

I've got a WB and a ultragauge in my truck. The surprising thing I've noticed is how quickly it goes into closed loop. Within seconds of start it is at 14.7 usually. Even on a really cold day.

Other cars I have monitored with typical narrow band 02 sensors.. wait until coolant temp is up quite a bit before going into closed loop.

Technically, these motors would never have to go into a true open loop since they have WB o2s, but I think they do stop the feedback loop under power enrichment/WOT mode. The widband sensors open up a lot of different opportunities for how the feedback loop works.
 
Sixth tank with Ecoblock

I finally was able to hit the interstate for part of this tank. I ran the trip odometer for it and set the cruise at 75mph - hilly - I75 north of Atlanta - if you live down here you'll know what I mean. The electronics said 21.0 mpg as seen on the photo. I know that is not accurate, but wanted to post that with my results for the tank.

296.4 miles / 16.37 gallons = 18.1 mpg

This tank was 45% City and 55% highway

I removed the Ecoblock this evening and will now run 6 tanks with it off for comparison. I am very interested in what the results will be for that. Stay tuned.
 

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I finally was able to hit the interstate for part of this tank. I ran the trip odometer for it and set the cruise at 75mph - hilly - I75 north of Atlanta - if you live down here you'll know what I mean. The electronics said 21.0 mpg as seen on the photo. I know that is not accurate, but wanted to post that with my results for the tank.

296.4 miles / 16.37 gallons = 18.1 mpg

This tank was 45% City and 55% highway

I removed the Ecoblock this evening and will now run 6 tanks with it off for comparison. I am very interested in what the results will be for that. Stay tuned.

Thanks so much for sharing!

Quirt
 
1st tank without Ecoblock installed

This is the first tank with the ecoblock removed.

284.1 miles / 18.979 gallons = 14.97 mpg

This tank was 90% City and 10% highway. Hours driven 15:23

Five more to go.:lookout:
 

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This is the first tank with the ecoblock removed.

284.1 miles / 18.979 gallons = 14.97 mpg

This tank was 90% City and 10% highway. Hours driven 15:23

Five more to go.:lookout:

Did you feel a difference in torque with the EB off? It should have felt a little heavier than when the EB was installed.

Thanks again for the continued data gathering!

Quirt
 
Tank 2 no ecoblock

Tank 2 with no ecoblock - stock.

292.4 / 18.719 = 15.62mpg

This tank was 90% city and 10% highway.

Drive Time = 14:19
 

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The problem is that the variability in control mpg is so high compared to the signal we're looking for that it takes a huge sample to isolate a change from the noise.
I thought of this post as I drove down to Birmingham and back. 23 mpg down. 21 mpg back. Same route, same speed, same load. Just 8 hours between the two trips.
 
I thought of this post as I drove down to Birmingham and back. 23 mpg down. 21 mpg back. Same route, same speed, same load. Just 8 hours between the two trips.

This is exactly why we spent three years testing our Eco Block fuel saving device in different countries around the world before releasing it to the general public.

We have found that different types of vehicles as well as different types of fuel will give different results on mileage and power, and the driving style also has a large effect on the fuel mileage increase. The more aggressive you drive, the better the increase will be because you will spend more time in the open loop fueling mode.

Quirt
 
This is exactly why we spent three years testing our Eco Block fuel saving device in different countries around the world before releasing it to the general public.

We have found that different types of vehicles as well as different types of fuel will give different results on mileage and power, and the driving style also has a large effect on the fuel mileage increase. The more aggressive you drive, the better the increase will be because you will spend more time in the open loop fueling mode.

Quirt

Why haven't you published any of the data?
 

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