![]() |
Originally Posted by joedr
(Post 6383407)
Wired mine up today and it is working fine!
I will post findings on the BR Race Core very soon.... well... as soon as I get to the dyno. jeje! |
Will do tomorrow morning and will let you know!
|
well both sensors should age at the same rate... and that should be pretty slow I would imagine.
mine is in and ready for the ECU to be patched - hopefully the one I did last night will "just work" :D... |
ok got my results from this morning.
Raw 2byte ADC was 657, MAF IAT was 15degs so 5*657/1024 = 3.21volts 3.21v = 16.5degs. Is that about right? Not sure why there is a difference between MAT and IAT?? |
Originally Posted by tephra
(Post 6384540)
ok got my results from this morning.
Raw 2byte ADC was 657, MAF IAT was 15degs so 5*657/1024 = 3.21volts 3.21v = 16.5degs. Is that about right? Not sure why there is a difference between MAT and IAT?? |
I am actually using the scaling from http://www.bmotorsports.com/shop/pro...roducts_id/400
and then using the voltage divider formula "5*($Ohms/(2250+$Ohms))" to convert ohms -> volts ps - Iam just doing the XML update now, will shoot you and email - I am redoing the turbo section.. :) |
ps how certain are you on the 2250 ohm internal ECU resistance?
|
Originally Posted by tephra
(Post 6384645)
I am actually using the scaling from http://www.bmotorsports.com/shop/pro...roducts_id/400
and then using the voltage divider formula "5*($Ohms/(2250+$Ohms))" to convert ohms -> volts ps - Iam just doing the XML update now, will shoot you and email - I am redoing the turbo section.. :)
Originally Posted by tephra
(Post 6384676)
ps how certain are you on the 2250 ohm internal ECU resistance?
|
hrmm yes, but I think its more likely the 2250 is slighltly off.
Ummm I have some pictures of the ECU board - let me see if I can see any resistors on it :) Probably a 1-million shot but hopefully it will work.... :) |
I will check in the morning for the values again.
The car has been off for the last couple hours and both IATs are showing 95 F (engine off). |
Can we just unplug the sensor then measure the resistance across the pigtail to work out the ECU resistance?
ie, either pigtail (the one that works) to +5volt? that should give us the resistance of the ECU resistor? |
1 Attachment(s)
Huuum! After a few mins.... the AIT was showing 96.8 and MAT stayed at 95 F.
Just attached a 10-15 min trip log of AIT and MAT... that was done earlier today with temp around 80 degrees. |
Originally Posted by tephra
(Post 6384924)
Can we just unplug the sensor then measure the resistance across the pigtail to work out the ECU resistance?
ie, either pigtail (the one that works) to +5volt? that should give us the resistance of the ECU resistor? |
Hrmm I guess it would be too hard to find the +5v signal anyways.
|
1 Attachment(s)
The difference this morning was still 1.8 F between the two. The coolant temp was also set at 77 F.
This was after a few mins with the key on. See here.... Attachment 298777 |
All times are GMT -7. The time now is 03:00 PM. |
© 2024 MH Sub I, LLC dba Internet Brands