IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

Does ECU tune void factory warranty?

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Old Aug 6, 2017 | 04:10 PM
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Default Does ECU tune void factory warranty?

Hi,

I am looking for ECU tune and I wanted to know if that will void my factory warranty?
And how much gain do I get just for ECU?

The car is no tune IS350 f sport.

Thank you!
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Old Aug 6, 2017 | 04:26 PM
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Originally Posted by danny8787
Hi,

I am looking for ECU tune and I wanted to know if that will void my factory warranty?
And how much gain do I get just for ECU?

The car is no tune IS350 f sport.

Thank you!
it's common knowledge that any part you install after market that causes the Demise of said vehicle will void any and all warranties
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Old Aug 6, 2017 | 04:28 PM
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But of course they'll have to prove it 1st.....��
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Old Aug 6, 2017 | 07:02 PM
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Thank you for the information.I had 370Z and IS350 isn't really fun car... So I was hoping to make this car to fun car. I guess I will have to stay with factory for now..
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Old Aug 6, 2017 | 07:13 PM
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Originally Posted by danny8787
Thank you for the information.I had 370Z and IS350 isn't really fun car... So I was hoping to make this car to fun car. I guess I will have to stay with factory for now..
350 ain't fun try a 300...I just lined up with my friends pos golf it took all my 220 hp just to get him by a nose...I'm waiting for that tune anything happens I'm just going to drop the car off at the dealer in the middle of the night and run away...
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Old Aug 6, 2017 | 07:30 PM
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Originally Posted by ttsport15
But of course they'll have to prove it 1st.....��
No, there is nothing to prove, once ECU tune, engine explodes, warranty is void. New car ecu's store all the tune info, it will tell them even if you uninstall the tune. It was different for older cars.
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Old Aug 6, 2017 | 08:28 PM
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Originally Posted by SikhSipahi
No, there is nothing to prove, once ECU tune, engine explodes, warranty is void. New car ecu's store all the tune info, it will tell them even if you uninstall the tune. It was different for older cars.
But we like to bend the rules it's the American way....Just remember you play you pay...just stay off the limiter and know when and who to play ...My explorer has been tuned for 3 yrs and I drive it pretty hard it makes great power and surprises a lot of people I have a 3 bar map sensor cai cooler tsat and plugs I had it to the dealer a few times no one every asked about any of it..
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Old Aug 7, 2017 | 10:00 AM
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Once the Ecu has been "tampered" with, any warranties relating to power train becomes void. As it's hard for both sides to prove either way. Even if it was a factory defect, you'll have one hell of a time fighting them.

They can't void any other warranties though. They can say anything they want, but the fact is, a change in the Ecu Shouldnt cause a failure in say the braking system, or electrical.
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Old Aug 7, 2017 | 01:35 PM
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they'll have to prove it

"They" don't have to prove anything, they just deny your claim.
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Old Aug 7, 2017 | 02:32 PM
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I guess none of this comes into play unless you have an issue, right? For instance, if I have an IS 300 and just did the tune that makes it IS 350-like in terms of performance without raising the rev limiter, it'd be a pretty low-risk option. Yeah?
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Old Aug 7, 2017 | 02:57 PM
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As soon as they figure out the handheld for my 17 I'll be tuned as well...
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Old Aug 8, 2017 | 12:15 PM
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Originally Posted by arentz07
I guess none of this comes into play unless you have an issue, right? For instance, if I have an IS 300 and just did the tune that makes it IS 350-like in terms of performance without raising the rev limiter, it'd be a pretty low-risk option. Yeah?
yup, plus this really all depends on your dealer. They can key warranty claims anyway they want. I know my dealer would bend over backwards to prevent them telling me the warranty is void due to a modification unless something very obviously caused the damage. Remember who you are dealing with here. It's Lexus not Honda.
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Old Aug 8, 2017 | 01:06 PM
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Originally Posted by ttsport15
But of course they'll have to prove it 1st.....��
It's not that hard to prove. Once you tamper with the ECU, it will probably change the checksum in the firmware.
A simple query into the checksum will prove that it is not the same as the manufacturer's.
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Old Aug 9, 2017 | 09:09 PM
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Originally Posted by 600rr
It's not that hard to prove. Once you tamper with the ECU, it will probably change the checksum in the firmware.
A simple query into the checksum will prove that it is not the same as the manufacturer's.
Wow, thanks for the heads-up. I guess piggyback boxes do not alter ECU in anyway, yeah?
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Old Aug 9, 2017 | 09:47 PM
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Originally Posted by ttsport15
350 ain't fun try a 300...I just lined up with my friends pos golf it took all my 220 hp just to get him by a nose...I'm waiting for that tune anything happens I'm just going to drop the car off at the dealer in the middle of the night and run away...
POS Golf? GTI is not a bad little car. MY son put in a racing chip on his Bimmer M3. When he goes to dealer for service, he always takes it out.
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