2g vs evo maf

[panamarojo]

I just bought a socketed ecu and it comes with a chip that is made for an evo maf. I have the 2g maf. How much of a difference is there? Also its meant for 660 injectors and i use rc 550's. I have a s-afc I was wondering if this would work?

 

[TsiJohn333]

So long as your safc is hooked up then yes it will work. You can compensate for the maf and injectors. With the safc zeroed out, you will be running lean. Pay close attention to your wideband and knock sum when tuning.

 

[panamarojo]

Cool. Well from what the dude told me its a keydriver. Thats the only change in the chip is the maf and injectors. Is there a way for me to edit this into like a stage 3 chip with a chip editor board. Ill post link to the site with the part I am talking about soon. Or should I just get a blank chip and go from there?

 

[Josh2g]

Cool. Well from what the dude told me its a keydriver. Thats the only change in the chip is the maf and injectors. Is there a way for me to edit this into like a stage 3 chip with a chip editor board. Ill post link to the site with the part I am talking about soon. Or should I just get a blank chip and go from there?

Instead of buying a chip burner some companies burn the Eprom chip. A company called JK tuning can burn your chip to your specifications. You can change all of your varibles just like keydiver used to do. I also think keydiver still honors upgrades and re-writes. I could be wrong though.

 

[TunersNation]

So long as your safc is hooked up then yes it will work. You can compensate for the maf and injectors. With the safc zeroed out, you will be running lean. Pay close attention to your wideband and knock sum when tuning.

+1

In addition, Keydiver only honor upgrades for the original owner of the chip.

 

[Djsniperwolf]

Confirmed... Buddy of mine bought an ECU with KeyDiver and couldn't get ANY support as he was not the original owner, I would have to say -Buyer beware...

 

[92AWDHX40]

With link thats not a problem pick your injectors and mas, your good to go.

 

[dansan1988]

The evo mas is a tad bit larger and as someone said will make you run lean. Keydiver does honor upgrades for the original owner, if you happen to have the same setup as the previous owner of the chip, lucky you, if not, well oops...

 

[Djsniperwolf]

The evo mas is a tad bit larger and as someone said will make you run lean. Keydiver does honor upgrades for the original owner, if you happen to have the same setup as the previous owner of the chip, lucky you, if not, well oops...

Ha ha ha.. Man, isn't that the truth.. I felt bad, because with what he spent.. he could have went DSM link and atleast had some support/upgrades behind it..

 

[panamarojo]

Ha ha ha.. Man, isn't that the truth.. I felt bad, because with what he spent.. he could have went DSM link and atleast had some support/upgrades behind it..

I only spent 120 bucks for this socketed ecu and this chip. I am planning on getting a different chip. I got the safc for free from a friend so no I didn't spend enough to get the dsmlink.

 

[92AWDHX40]

I decided with link because if if was going to spend money on tuning i was going to do it with support after i read about the pros of it. Never used a safc, a palm for a a bit, but you have a good start.

 

[panamarojo]

Yea I know ECmlink is what I want here soon, just not right away.

 

[delta448]

I just bought a socketed ecu and it comes with a chip that is made for an evo maf. I have the 2g maf. How much of a difference is there? Also its meant for 660 injectors and i use rc 550's. I have a s-afc I was wondering if this would work?

evo8mafsettings [ECMTuning - wiki]

baseinjectordata [ECMTuning - wiki]

The settings on the chip will make the ECU read more airflow. The Evo MAS reports a higher airflow at the same Hz, so using a 2G MAS would make the ECU raise pulsewidths/read more airflow. At the same time, the smaller injectors will inject less fuel per time. My head hurts, I really don't want to do the math.

If I'm thinking clearly enough, off the top of my head it looks like about a 17% reduction in injector coupled to anywhere from 19-31% more airflow than actual read. So depending on where you are on the map, there will be anywhere from 2-14% more fuel injected by the ECU than the target. You'll run a little rich.

 

[panamarojo]

Cool so ill just get my fuel trims up to 100% and my wideband down to 14.1:1.

 

[steve]

Cool so ill just get my fuel trims up to 100% and my wideband down to 14.1:1.

What?

Getting your fuel trims close to 100% results in making the engine run at an average of 14.7:1 during closed loop (when the O2 sensor is providing feedback). During open loop your going to be looking for a AFR around 11:1 or so, not an engine killing 14:1.

Using an SAFC you typically make corrections in the low throttle table for the closed loop operation and then move those to the high throttle table and finish up by adjusting those for your desired WOT AFR.

 

[panamarojo]

Thanks, my bad I should have said 11:1 for WOT. Its how I have it set up currently.

It's giving me a bad idle. Is this happening because the chip is meant for 660's and an evo maf. I am using 550's and a 2g maf. Or could this ecu be bad? The ISC drivers look good.