Will my ECU send out the right error codes?
I have a 7MGE ECU on a 7MGTE.....I know I know, I bought it that way....Yes I plan on changing it along with the wire harness....But for now I want to check for any problems I may have so if I were to check the error codes would it give me error codes for boost leak? Or running lean or rich??
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I hope there's a good fuel controller in there... if not you may find yourself looking for a new engine sooner than you'd like.
No, for reasons beyond my comprehension the GE ECU has no functionality for diagnosing turbo related problems... :nuts: There is a lean code but it simply indicates that the system is taking in way more air than it thinks it should according to the fuel maps... absolutely no good for any real diagnosis of air/fuel mixtures; What you'd need there is a wideband. |
You might get all kinds of codes flashing. Does it even run good.
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Yeah it run's drives really good but I don't drive because I'm afraid it's probably running really lean, so before summer brakes I plan on installing a GTE wire harness, ECU, maft pro, and wideband sensor then have it properly tuned and go from there.
Thanx for you help guy's, I was afraid that would be the case. |
Get thine arse to a performance shop for a couple dyno runs. Do a slow one as well; This will give you a graph of your AFR (make sure their dyno printouts include that, it's uncommon but some shops don't unless you ask) at each RPM. It's only going to cover the higher loads but it'll let you know if there are any danger zones.
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Now this has got my wheels turning as to why someone would do this....
The GE Ecu won't have a fuel cut correct? With this GE ecu wouldn't the BOV then be able to be vented to the atmosphere with out significant rich spot between shifts? Of course a fuel controller would be needed to stop detonation from even the stock boost. But if the other questions above are both correct then that could be an alternative to the Lexus Afm.... and save mad tuning for the bov venting normally required on the gte ecu? And this should able to be achieved with a simple piggyback system right? Oh and I bet if u open the glove box area you will see where the previous owner had the fuel controller hooked up! |
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Why? Generally because it's cheap, easier than swapping everything, works (sort of), and laziness.... oh and it's cheaper. Quote:
No, the GE does not have such protection as there's really no way even a modded GE could take in ore air than its fuel maps allow for. Quote:
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Another problem with this is that the GE runs much more aggressive timing maps than you'd run on a forced induction engine (if you want it to last) so now you need to add a timing management solution... or pull 4+? from the base and kiss your low end performance goodbye (not that the GTE performs well on the bottom end, but fortunately it's not there for long). Quote:
You can run just about any 3 liter I6 on an EMS for any other 3 liter I6 as long as the fueling maps support it and the timing maps are close. I've seen 2JZ-GTE's run on 7M-GTE electronics and even stranger combinations... try a turbo charged BMW E36 running 2JZ-GTE electronics. BUT, to put it simply: There is NO benefit to running GE electronics on a GTE. |
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Was the car N/A or Turbo to begin with? The title will start with either JT2MA70 or JT2MA71. If it starts with JT2MA70 it was N/A to begin with and was probably a lazily done swap to begin with...If so I'd start snooping to make sure everything is where it should be for a GTE including items such as the oil cooler.
What color is the top of the fuel injectors? |
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