2JZGE Na-T TT Ecu Mod
12-04-13, 04:49 PM
#1291
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Join Date: May 2012
Location: Arizona
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ONE MORE QUESTION-
Has anyone actually passed OBDII emissions using an ecu from a different make and model car? I cant seem to find any solid info on this. I read somewhere that if the test station detects that the ecu is from a different car than what it is in, you can fail?
Has anyone actually passed OBDII emissions using an ecu from a different make and model car? I cant seem to find any solid info on this. I read somewhere that if the test station detects that the ecu is from a different car than what it is in, you can fail?
12-04-13, 05:44 PM
#1292
Haven't heard of them detecting that ever, but I guess it could happen. Something you may need to figure out locally but its pretty common to use ecu's from different car's especially on other brands. The SC is so close to a supra though you could say your ecu went bad and you had to replace it, it probably interchanges with the n/a one at least. You are technically even allowed in most places to have a usdm supra swap of a newer year in your car, which is basically what you will end up with and throw a toyota spark plug cover on to finish it off, but I would think if all the emissions equipment is on the car and its not throwing codes its prob not a emissions hazard.
Last edited by Ali SC3; 12-04-13 at 05:51 PM.
12-04-13, 06:12 PM
#1293
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Okay that gives me some relief. Thanks.
Do you know of a member on here that has passed with this setup? Maybe they can give some insite as to how they did it, or if it was even an issue.
Do you know of a member on here that has passed with this setup? Maybe they can give some insite as to how they did it, or if it was even an issue.
12-04-13, 07:52 PM
#1294
Driver School Candidate
Join Date: Aug 2003
Location: New Jersey
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In NJ a swap is legit if you have a motor that is equal or newer than your chassis year.
I.e. you can't have a 99 motor in an 02 shell.
So, with that said- completely ignore that law. It makes no sense.
In all actuality, your ECU has to be from a newer or equal year, because that is what reports the model year to the scanner.
So, as long as you can get an ecu from that year that will run your motor, you should be fine.
Oh, and you have to pass emissions and throw no codes.
12-05-13, 10:26 AM
#1295
I was looking for the same info, one guy a couple pages back was having some code problems and I was hoping he would post back with results.
12-05-13, 01:26 PM
#1299
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I gotta try an breeze through these issues. haha I guess Ill let you guys know what happens. What issues/codes are you getting?
12-05-13, 01:46 PM
#1300
Lexus Test Driver
Yeah keep me posted. the codes are sub TPS, EGR, and idle air control valve. Car doesnt boost right, and shuts off after i press the clutch right after pressing the gas
12-05-13, 02:53 PM
#1301
do you have the egr plugged in? if not there is the resistor for that and for the sub tps it just needs 5v on the signal wire. Idle air control valve is a weird one is it not plugged in or something it should be working?
do you have a picture of how you routed everything. it could even be related to the IACV code if it is not idling high enough to begin with it will be easier to stall from venting the bov. Even stock supra TT's will tend to stall out if you do not recirculate.
do you have a picture of how you routed everything. it could even be related to the IACV code if it is not idling high enough to begin with it will be easier to stall from venting the bov. Even stock supra TT's will tend to stall out if you do not recirculate.
Last edited by Ali SC3; 12-05-13 at 03:17 PM.
12-05-13, 04:19 PM
#1302
ONE MORE QUESTION-
Has anyone actually passed OBDII emissions using an ecu from a different make and model car? I cant seem to find any solid info on this. I read somewhere that if the test station detects that the ecu is from a different car than what it is in, you can fail?
Has anyone actually passed OBDII emissions using an ecu from a different make and model car? I cant seem to find any solid info on this. I read somewhere that if the test station detects that the ecu is from a different car than what it is in, you can fail?
but omitted the part about adding a couple of cylinders. The manager had to do some sort of override, then I passed.
12-06-13, 09:27 AM
#1303
That is good to know, I figured you could say you had to replace the ecu its pretty common for ecu's to go bad.
just noticed your DIY boost cut eliminator in your sig and found the thread, I gotta make one of these I could use 20 psi myself. what injectors are you on Ishootstuff and how is the boost cut device working?
https://www.clublexus.com/forums/sc-...liminator.html
just noticed your DIY boost cut eliminator in your sig and found the thread, I gotta make one of these I could use 20 psi myself. what injectors are you on Ishootstuff and how is the boost cut device working?
https://www.clublexus.com/forums/sc-...liminator.html
12-06-13, 09:52 AM
#1304
That is good to know, I figured you could say you had to replace the ecu its pretty common for ecu's to go bad.
just noticed your DIY boost cut eliminator in your sig and found the thread, I gotta make one of these I could use 20 psi myself. what injectors are you on Ishootstuff and how is the boost cut device working?
https://www.clublexus.com/forums/sc-...liminator.html
just noticed your DIY boost cut eliminator in your sig and found the thread, I gotta make one of these I could use 20 psi myself. what injectors are you on Ishootstuff and how is the boost cut device working?
https://www.clublexus.com/forums/sc-...liminator.html
Once it was set up, I have never touched it again.
