Eco Block from crawford performance

Got a picture of it installed on your truck Laney?

 

i agree, on your need to see some dyno numbers, but for 40 dollars vs a cold air intake id rather spend 40 and see the same gains. I will tell you the butt dyno says good. I would go run the dyno for you, but i beleive the closest one is going to be dallas tx thats like 350 miles away.. i am going from exp on the product now and before.. i couldnt live without it on my FRS even after trying to convince myself this thing didnt work i took it off and put it on multiple times but it really worked.

 

yeah ill take some pics today for you of it on my truck.. haha right now im at work so probably when i goto lunch here in a bit ill put a few pics..

 

Changing the location of the MAF sensor could effect the F/A ratio, may be something to fine tune with, but if you install an intake and exhaust you'll need a fuel controller to get it right because the Tacoma runs lean at part throttle, rich at full throttle and high rpm lean out it takes a tuner to fix all that.....

 

he's right, it's simple air flow dynamic. you wouldn't really need a dyno so much as an air tunnel with some dye and a factory intake to identify the high and low flow air zones. i'm not sure if it's completely optimized at one-size-fits-most, but for the most part, lifting the maf up out of prime air flow is going to 'trick' the ecu into leaning out the motor, all the same.

 

Think I'd trust a MAF Cali more...

 

found this video on crawford's eco block Facebook page, laney posted it

 

Normaly your loosing me at : Increase MPG and power.

First forget about the closed loop part of the FI. The only thing that will be changed is the fuels trims.

If we look at the open loop part. Moving it in the slower part of the airflow will reduce the reading of the MAF so maybe for this part, you will run a bit leaner at WOT and it's not a bad thing on this truck that run realy rich at WOT. It's like calibrating your MAF mechanicly. It's possible. What i would like to see it's the AFR readings at WOT.

My 2 cents.

 

Don't get me wrong, I'm not saying I would go buy one, I'm just saying in theory *IF* you hit the sweet spot of air flow then it works.

As for closed loop... yeah it may lean out your truck for a few miles, but eventually the ECU will tune that problem out. I also can't see the lean condition being so severe that it damages anything.

 

Thanks for thinking outside the box, here is a before and after dyno.

 

Those are data points, but most of us understand that there is a difference on how our, for the most part, v6 4.0's react to mods then performance oriented 4's.

There is still definitely a question about how this affects closed loop operation. Dyno and 0-xxx runs are all open loop and for the most part read fuel pulse widths from an ECU table. Closed loop is going to use the MAF sensor, but predominately uses the AF sensor to set pulse width.

 

Their is zero effect on the closed loop fueling as the computer forces it to run at 14.7 to 1 AFR, that said their is a bump in ignition timing as well as cam timing while in this mode.

 

In closed loop there is a bump? Details please.

 

The Eco Block changes the X axis of every load based table within the Engine Control Unit. Depending on the car we are speaking of these load tables will control, fueling, ignition timing, variable cam timing, shift points in an automatic transmission and boost pressure on some turbocharged vehicles. By changing to a different row on the table, the output from the table is changed because it used a different number in the equation for the output. This graph is different as the Y axis is for load but it gives you an idea of what I am speaking of.

 

Dude... your wife's FJ needs one of these as well, she will love you long time

 

But aren't these the open loop tables?

 

Sorry dude, I assumed from your prior comments that you understood how the open and closed loop fueling concepts within the ECU worked. This last question from you opened my eyes to the fact that I lost you when I talked about how the engine control unit functions. After 20 years of tuning I end up thinking it's common sense and everyone understands it

The term open and closed loop fueling "only" relate to a few of the hundreds of maps found on the ROM within the ECU. These are look up tables which the ECU uses to compare the AFR that the Lambda sensor is reading while in closed loop fueling so it can trim the ratio to Stoichiometric. That said, all the tables I mentioned above are indeed active during open loop and closed loop fueling compensation.

Anything else I can help with?

 

So do you work for crawford performance or are you just some random person who decided to make an account just to dive right into this conversation?

 

Both Guess I should update my profile, sorry

 

Nah, all good. I don't know you or your knowledge base either. Because of that I tend to ask open-ended, borderline questions to find out if you actually have some background and knowledge or are just some (DREAD) marketing person.

Still would be nice to see some Tacoma specific data though. As mods that work well on other engines, don't seem to do much on the 4.0.