2JZGE Na-T TT Ecu Mod - Page 227 - ClubLexus - Lexus Forum Discussion


SC- 1st Gen (1992-2000)

2JZGE Na-T TT Ecu Mod

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Old 05-15-17, 09:38 AM   #3391
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jump the right resistor depending on year and make sure the right wire is hooked up for the tach on the ignitor. that should be all that you need to get it to work.
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Old 05-24-17, 07:23 AM   #3392
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Just wanted to post an update on the usdm ecu, its still bad so far but I did pass inspection again this year. I am still currently driving on it because I miss the backfires and for some reason the usdm ecu like rev matching where the jdm doesn't.

Either way still going strong.
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Old 05-25-17, 10:30 AM   #3393
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Good to know, thanks for the update. So whats the US ecu doing now that is off still? still find it odd that it runs so differently on the US and JDM setups.
I wonder if most states even care about the obd2 working or not if it passes the rollers, I used to think it had to work but maybe not if it passes the sniffer, may be worth checking with your local place.
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Old Yesterday, 10:29 AM   #3394
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Basically the stock tune for the map ecu is not correct at all for whatever reason. With the stock map I'm at -20% short term fuel trim at idle which causes all kinds of weird behavior when you actually start moving. My county doesn't do any emissions testing so no rollers or anything not even a visual inspection on the cats, they just plug it in and do the normal inspection on lights ect. I'm pretty sure I would fail all of those emissions tests as it sits currently.

I'm still playing with the fuel under 0 PSI to see if I can dial the trim into a reasonable area, but it requires a decent amount of time driving, adjusting and then resetting fully with a cold engine. I also need to ditch the OBD2 IACV, neither ecu likes it and the OBD1 IAVC performs much better all around.
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2jzgte, aem, aristo, ecu, iat, igniter, jdm, lexus, mod, odb1, single, stand, stock, supra, tt, turbo

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