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04-16-2016, 12:45 AM | #1 |
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Do I need to revert back to stock tune before servicing?
Hi all,
My car needs to get serviced in about two weeks. I'm currently running the OFT stage 1 tune, and I was wondering if I need to or should revert back to the stock tune before I send my car in for servicing? I get it serviced at an official toyota servicing centre, FYI, and it will be my car's 2nd service. I'd like to avoid returning back to stock tune as it would take a while for the car to relearn the tune after servicing. Thanks |
04-16-2016, 01:22 AM | #2 | |
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No don't worry about it, unless they are planning on flashing something to the ecu like a reflash of some sort (which they will tell you beforehand) it's a non issue, if it's for warranty work in the future you can still run the tune as long as it's not something that involves the ECU directly otherwise flash to stock. The OFT roms are almost totally undetectable, to techstream for them it'll read as stock because the ecu isn't locked like ecutek roms.
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Last edited by FRSBRZGT86FAN; 04-16-2016 at 06:01 AM. |
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The Following User Says Thank You to FRSBRZGT86FAN For This Useful Post: | alchemy (04-16-2016) |
04-16-2016, 01:51 AM | #3 |
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I would revert back if you can. I bright my car in for a throw out bearing replacement and they checked my ECU. Although I was stupidly running an e85 tune at the time... They ended up asking if I changed anything in the ECU. Took them two days to get a response from subaru of America and they actually advised the dealership to not work on my car but since the dealership strongly felt it was pure mechanical error they worked on it anyways.
It's just a 10 minute process, I'd flash back. |
The Following User Says Thank You to tracerit For This Useful Post: | jcw99 (07-06-2016) |
04-16-2016, 03:17 AM | #4 | |
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The Following User Says Thank You to Wayno For This Useful Post: | FRSBRZGT86FAN (04-16-2016) |
04-16-2016, 05:59 AM | #5 | |
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That has nothing to do with service as Wayno said it's completely unrelated that was an attempt at a warranty repair also you were running e85 not the 91 or 93 tune, the ecu will not show any signs of tampering regardless....
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04-16-2016, 09:39 AM | #6 | |
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Interesting you guys say it'll show no tampering with a modified tune loaded. They tried to connect to my ECU and ran into an issue. They asked if I modified it. Had to say yes. |
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The Following 2 Users Say Thank You to tracerit For This Useful Post: | RichardsFRS (04-16-2016), Tcoat (04-16-2016) |
04-16-2016, 11:15 AM | #7 | |
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"We would love to help you there Mr Wayn but our system shows that on April 16, 2016 your car was clearly modified". Not saying they will notice any mods but you run a risk of it happening and the bigger the mod the bigger the risk. People need to know that and decide if the level of risk is acceptable to them before they take it in. THAT is why this "crap" is still being repeated after 4 years.
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The Following User Says Thank You to Tcoat For This Useful Post: | jcw99 (07-06-2016) |
04-16-2016, 12:31 PM | #8 |
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A properly installed OFT ROM should not be obvious to the dealer even if they hook techstream to it. It will report the ROM ID just like the stock ROM, if you did it correctly.
To know it is not a stock ROM, they would have to download it and compare it to the stock rom or do a checksum and compare to the checksum of the stock ROM. Did you figure out which ROM you had on the car and downloaded an OFT ROM with the same ROM ID? If a tech at the dealer is VERY familiar with the car, there are other telltale signs of a tune, like the warmup duration and RPMs when the engine is cold. |
04-16-2016, 02:57 PM | #9 | ||
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Exactly this if you've used techstream and even seen there SST tools you'd know they have no way of noticing the changed rom, the cal id for them is OEM. They'd have to delve super deep and get someone from corporate to pull the roms from the ecu for analysis.A normal dealer can't do that stuff.
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The Following User Says Thank You to FRSBRZGT86FAN For This Useful Post: | justatroll (04-16-2016) |
04-16-2016, 04:39 PM | #10 | ||
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Just saying, in my case, in regards to the OFT not being detectable, they ran into some issue when they connected to my ECU. Unfortuantely I don't have any actual details. For servicing though, I can't imagine them connecting up to your ECU. Not sure if dealerships go for teset drives after basic services are done, but the OFT tune does have that distinct 4k rasp. If the tech notices that, they might mention to have that noise checked out next time. But that's really stretching things haha. |
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04-16-2016, 04:43 PM | #11 | |
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Well in my case for the TSB to reflash my TCM, and for emissions inspections I've left the OFT tune stage 1 93 in there and they have had 0 issues.
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