Joona Lindberg Posted December 20, 2021 Report Share Posted December 20, 2021 Any update? I have a JZS171 1JZ. Same pins as JZX110 I'm sure. Quote Link to comment Share on other sites More sharing options...
jason_s5377 Posted January 26, 2022 Report Share Posted January 26, 2022 On 3/11/2021 at 2:13 PM, wastegate said: I have a 2004 IS300, fuel gauge works, but on E85 it gets a little weird, eg gets down to 1/4 tank and then goes back up to 1/2 or something like that randomly. Would be interesting to know how you go and if the two systems are that close together wise. I'd suspect they are and as long as the body computer was getting the right parameters on the right MPX frames then golden. Hey bro, do you have a is300 running on a altezzalink????? Quote Link to comment Share on other sites More sharing options...
wastegate Posted January 28, 2022 Report Share Posted January 28, 2022 Yes, was using a G4+ version for a couple years, recently upgraded to a G4X and has made 605rwhp. I used an Aristo engine and loom, repinned the ecu plugs. Routed unused Altezza functions (unused exhaust VVTI, extra O2 sensors, couple other things I can't remember) to external DT connectors for extra IO and sequential ignition for when I will goto R35 coils. Pretty much at the limit of the VVTi waste spark now. Everything worked fine, fuel level was a little weird but only when I switched from 98 to E85 with flex fueling as it kinda throws off the body ECU which calculates the fuel gauge to the dash, based off the fuel usage from the ECU. Think of these fuel gauges as a distance to empty gauge instead. Quote Link to comment Share on other sites More sharing options...
Declan Posted May 2, 2022 Report Share Posted May 2, 2022 Hello could anyone please give me some insight into how compatible the jzx100 ecu (89661 - 22800)/engine is to the jzs171 ecu (89661 - 3A660/engine thank you Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 2, 2022 Report Share Posted May 2, 2022 It doesnt even look like they share the same connector according to google images. Quote Link to comment Share on other sites More sharing options...
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