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Faking out the sai

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  #11  
Old 02-05-2020, 03:21 PM
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Originally Posted by Best4x4
Yep “some” 03-04’s are non SAI! I’d just get a non SAI ECU & go from there. I’m not 100% certain, but I’ve also heard that a system like the Autologic can make changes to the ECU & if SAI is an option it could be turned off. Just haven’t had a big chance to piddle with the 10k Autologic system to know for sure what it can/can’t do.
A year or 2 ago I read here about a UK company that could flash a D2 ecu, for around $500.
It was a few small changes, mainly adding more timing at lower rpm's for a little more get up and go.
I have heard nothing about them since.
I wonder if something like Ecu Unleashed works on D2s?
And if it or the UK flash could turn off SAI?
Then 4 pipe thread plugs for the heads and pitch the rest.
 
  #12  
Old 02-05-2020, 03:45 PM
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And all of this assumes that you don't have to go for any emissions testing. Trucks with SAI show up as Low Emissions Vehicles in the testing system here in New York when the machine reads the VIN. If your VIN says the truck is an LEV and the ECU doesn't report that the system is present and error-free, you're not going to pass.
 
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  #13  
Old 02-05-2020, 04:27 PM
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Well I got something rigged up on a temporary basis to see if it works. I have started it and ran 2 times since then with no CEL popping on but time will tell.
 
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  #14  
Old 02-05-2020, 04:44 PM
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Originally Posted by zuke
Well I got something rigged up on a temporary basis to see if it works. I have started it and ran 2 times since then with no CEL popping on but time will tell.
Are the SAI pipes still on the engine?
Blocked off?
 
  #15  
Old 02-05-2020, 05:33 PM
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nanocom has several programming options for SAI 'ON/OFF' . I have non SAI ecu and all options are off. Not sure if you could turn SAI options to 'OFF' on an ECU w/SAI using nanocom.....
 

Last edited by XRAD; 02-05-2020 at 05:38 PM.
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  #16  
Old 02-05-2020, 09:07 PM
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You just need to flash the ECU with a non-sai program. My guy in Greenville would do it for $75. As far as tricking it, yes the ECU looks at the oxygen sensors, does not look at the load on the pump.
 
  #17  
Old 02-05-2020, 09:37 PM
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Originally Posted by Extinct
You just need to flash the ECU with a non-sai program. My guy in Greenville would do it for $75. As far as tricking it, yes the ECU looks at the oxygen sensors, does not look at the load on the pump.
What else can he change in the ecu?
Timing??
 
  #18  
Old 02-06-2020, 06:12 AM
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Eurover is the name of the shop, Greenville SC. He has a Testbook, so he can flash factory stuff only. Reasonable price, tons of trucks, so I would bet he could do a mail in service and get it flashed for a bit more - you know, install ecu in one of his other trucks for the connection.
 
  #19  
Old 02-06-2020, 07:09 AM
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Originally Posted by XRAD
nanocom has several programming options for SAI 'ON/OFF' . I have non SAI ecu and all options are off. Not sure if you could turn SAI options to 'OFF' on an ECU w/SAI using nanocom.....
Can't electronically turn off SAI with a Nanocom.
Under the Motronic ECU Inputs it only shows the SAI pump, SAI system, & SAI solenoid valve are on/off or active/inactive as you mentioned.
 
  #20  
Old 02-06-2020, 07:44 AM
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Thanks for clearing that up JUKE!
 
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