Stand Alone ECU
MBWorld Fanatic!
Joined: Dec 2007
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From: Corona, CA
03 g35 coupe...........02 c32 Sold
I will be going to talk to a local AEM tuner this weekend in the Illinois/Iowa area. I will provide some feedback as far as pricing and any other information I can find.
My goal would be to maximize fuel efficiency without sacrificing performance. Depending on the A/F ratio at cruising speed, I would just want to lean it out.
I know some of the eco friendly cars have a lean burn mode. Does anyone know off-hand what ratio they run during that?
I'm really interested in tinkering around, but I'm very hesitant considering the car. Like I told my neighbor, I would just take my time tuning it and make ever so slight adjustments and just log every bit of information I could.
My goal would be to maximize fuel efficiency without sacrificing performance. Depending on the A/F ratio at cruising speed, I would just want to lean it out.
I know some of the eco friendly cars have a lean burn mode. Does anyone know off-hand what ratio they run during that?
I'm really interested in tinkering around, but I'm very hesitant considering the car. Like I told my neighbor, I would just take my time tuning it and make ever so slight adjustments and just log every bit of information I could.
You'll probably get more mpg if you just run your tires at 40psi and get rid of your spare tire and accessories in the rear.
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Joined: Dec 2007
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From: Corona, CA
03 g35 coupe...........02 c32 Sold
What "flasher" would you recommend. I've always thought we can't really flash our ECU's and only certain companies like Eurocharged with lots of experience can modify the code. If I were to run a setup with methanol injection, nos, race fuel, co2 sprayer, etc, what would I need? For instance, how do we tune for NOS being that it won't be in constant use?
So you can have a street tune and a race tune. All those tuning companies do is just flash the flash memory of the ecu's with there own custom fuel maps.
You can have one of them load the fuel maps onto the device and switch between maps using the device.
Yes your car will make more power if you have a tune for race gas or nitrous then without.
http://oetuning.com/blog/
I would just email jeremy at sales@oetuning.com.
He's a stand up guy and was able to finally get my car the way it should be working.
Thread Starter
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2005 Pontiac GTO 6.0 LS2 - Blue
Its called E-Z flash, jeremy at oe tuning sells them. It basically allows you to load multiple tunes onto mercedes and bmws via obdii port.
MBWorld Fanatic!
Joined: Dec 2007
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From: Corona, CA
03 g35 coupe...........02 c32 Sold
Unless your talking about afr's at below 3000rpm.
Member
Joined: Aug 2010
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From: Moline, IL
2006 C55
If the Renntech is supposed to prove 2 mpg better while giving more power, I can't complain on that one. If it would be possible, I would use something like the EZ Flash and have one map for power and one map for economy.
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MBWorld Fanatic!
Joined: Dec 2007
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From: Corona, CA
03 g35 coupe...........02 c32 Sold
here's the afr with a stock c32 with a stock tune. As you can see at low rpm the afr is 15 and at high rpm and speed it goes down to 11.5-12 afr
https://mbworld.org/forums/c32-amg-c...7-10-07-a.html
https://mbworld.org/forums/c32-amg-c...7-10-07-a.html
MBWorld Fanatic!
Joined: Dec 2007
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From: Corona, CA
03 g35 coupe...........02 c32 Sold
i dont have any stock dynos of c55, but even cars with tunes are lean at below 3000rpm. My c32 is tuned and it runs 15-14afr below 3000rpm.
I would imagine that c55 fuel curve will look similar, maybe even a little leaner since NA can run leaner then FI cars. Most oems runs lean on the low rpm to maximize there mpg numbers when the EPA tests them.
Newer engines can run leaner then previous ones, especially compared to the old iron block motors. Only car i really seen that runs really rich through out the curve are evo's stock.
Thats why they get like 30whp just from a ecu tune.
I would imagine that c55 fuel curve will look similar, maybe even a little leaner since NA can run leaner then FI cars. Most oems runs lean on the low rpm to maximize there mpg numbers when the EPA tests them.
Newer engines can run leaner then previous ones, especially compared to the old iron block motors. Only car i really seen that runs really rich through out the curve are evo's stock.
Thats why they get like 30whp just from a ecu tune.
Member
Joined: Aug 2010
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From: Moline, IL
2006 C55
hhhmm.... do you know of anyone using the DashHawk II on our cars? I would be curious to hook one up and find out what I'm actually running. I think either way you look at it, you can tune it for power or economy, and I think having the capability to switch from one to the other would come in handy.
Thread Starter
MBWorld Fanatic!
Joined: Sep 2008
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2005 Pontiac GTO 6.0 LS2 - Blue
Can you get accurate AFR readings with the narrow band oxygen sensors on our vehicles? Thought the only way to get good readings is with a wide band, or at least that's what everyone said when I put my air fuel ratio gauge lol...
Member
Joined: Aug 2010
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From: Moline, IL
2006 C55
$300? I thought I seen the AEM wide band sensors for less than that. I wonder how hard it would be to install some new ones.
And yes, wide band is the way to go.
Even if you were monitoring a narrow band though, you can still find out how often it switches between a lean and rich cycle. It won't tell you the whole story, but its a start.
And yes, wide band is the way to go.
Even if you were monitoring a narrow band though, you can still find out how often it switches between a lean and rich cycle. It won't tell you the whole story, but its a start.
MBWorld Fanatic!
Joined: Mar 2007
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From: Houston, TX
C32/C55 AMG
For a simple wideband gauge and o2 sensor I would check out Innovate LC1 Wideband w DB Gauge Kit LC-1 Red o2, they have some great deals on ebay for less than $200. That includes a gauge and wideband o2 sensor.
