The ME-R WB is available

EricM

EricM

Administrator
Staff member
Through a collaboration between Steve and I, we've added wideband closed loop control to Steve's ME-R MAFless thumbwheel chip system.

Your ECM needs to be modified to add an additional input which will accept the 0-5v output of a wideband controller. Bob Bailey is currently doing this modification to the ECM for this application.

This upgrade applies to the newest ME-R version 11.82 only.

Feel free to ask questions!
 
EricM

EricM

Administrator
Staff member
Yes it should work. The AEM has a 0-5v output.

If the air/fuel ratio doesn't match up with the ECM the first time, all we need to do is figure out how far off it is, and I can tweak the chip to make it match.
 
S

Super6

Member
plx-300

i have the plx-300 wb...will his work Eric? i need to know the address to send my ecm and i guess you get the chips Eric? email me at Buick8738@aol.com so i can get this thing going...this is great by the way...nice work............thanks Bob
 
S

Super6

Member
WB sensor

Eric, i talked to Steve on the phone friday and he was telling me there was a difference in wb 02 sensors and that i needed to get with you so you can put the right input in the chip versus what wb 02 i have:)D )...i have a bosch now but i am going to buy a better one... FJO? i want to start with 116 race fuel to tune with so i don't drive over the crank:eek: and then turn on the alky at a later date. i have my computer and chips boxed up ready to go out. i am sending you your $ if i can find your mailing address on your site..............thanks Bob Wren buick8738@aol.com
 
EricM

EricM

Administrator
Staff member
I've never used the FJO but it should work fine. The FJO will support both the Bosch sensor and the NTK. Many people say the NTK sensor lasts longer with leaded fuel. The NTK is over $200 and the Bosch around $70.
 
C

CS99

Member
Eric, could you also send me info on how to hook up my PLX M-300.
I will send computer to Bob for modification, what else do I need besides new version of max effort chip? Thanks, CS
 
EricM

EricM

Administrator
Staff member
When you get the ECM modified, you'll receive a couple new wires to install into the ECM plug harness, one is for the wideband 0-5v signal, the other is wideband ground. The white wire (analog out) from the PLX is the 0-5v signal that connects to the ECM. The PLX doesn't have a specific analog out ground, so for now I would leave new ECM ground disconnected and see how it goes. Mine worked ok without the ground.
Once you get the new chip, that should be all you need.
 
C

CS99

Member
Maxeffort Wb

I just finished tuning my gn with the wide band control. Everything is running great. The dual timing feature is set to give me more timing on the bottom end and less on the top. The idle is perfect around 13.8/1. I just wanted to say that I'm very happy with the new mafless version/dual timing with the wb control.
 
S

SIX GUN

Member
2&2, thinking Of Upgrading.

Eric, I have 2 of your chips, emissions & "street" which works dam good: 10.15 @131 mph, approx. 22lbs. of boost or "less" on unleaded & alky with the trans flairing second to third gear, lost 2 to 3 mph because of flairing trans. I know because trans is now fixed.

I have two of Steve's ME-R's V11.82, one with 20/18 degrees (street) and one with 26/24 (race) and I am thinking of going to the WB control. I just installed the (NGK) POWERDEX AFX air-fuel monitor which uses the Bosch wideband 02 sensor(UEGO) and has a 0 to 5V, linear analog output (starts at 0.00V/9.00 afr and ends at 5V/16.00 afr).

1)How does the WB control work,i.e. goes straight to "set afr" at WOT? or a certain boost level, etc.

2)Is there anything from your street chip "which works so well" that can be incorporated into the ME-R's

3)need to know where to send the 2 chips and ecm to, cost, etc.
Am I missing anything here?
Thanks Bill
 
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EricM

EricM

Administrator
Staff member
Hi Bill,

I haven't done a calibration for the AFX yet, but it won't be that difficult to set up.

The wideband control works like this. You set your desired A/F ratio when at WOT. When you mash the pedal, after the chip is done with the spoolup curves etc, closed loop will turn on and try to maintain your set A/F. There is a window of about -8% to +33% fuel correction. You can monitor the correction on a scantool, and bump the thumbwheel up or down to keep the correction in range. There is also a secondary A/F ratio setting activated at the MPH of your choosing.

My street chip is designed to use a MAF and keep closed loop control (stock O2 sensor), whereas the MER is an open loop MAFless system. I suspect Steve intended it more for the race guys, but some guys have real good luck with it on the street. Steve would be better at answering some of those questions.

The ECM needs to go to Bob Bailey to add the WB input. I would email Steve at maxeffortfuinj@comcast.net to get the details on the cost and such.

Let me know if you have any questions.

Regards,
Eric
 
B

bobbybuick

Member
Eric in the case the wonderfull bosch o2 goes out can you make it ignore the input?I see me using it to tune and then not using it in case of a falure to the o2.is this able to be done?are you going to be at the midwest challange?I have a spare map ecm Im sending out to Bob this week.I would like to get one set up for the input and leave mine the way i have it now.also do you need blanks I have some?
Bob Slusser
 
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