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!

ttsport15

it's common knowledge that any part you install after market that causes the Demise of said vehicle will void any and all warranties

ttsport15

But of course they'll have to prove it 1st.....��

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..

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...

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.

ttsport15

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..

Jay89

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.

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?

ttsport15

As soon as they figure out the handheld for my 17 I'll be tuned as well...

Ciggy

iTrader: (1)

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.

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.

zhifan1

Wow, thanks for the heads-up. I guess piggyback boxes do not alter ECU in anyway, yeah?

Htony

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.

600rr

I don't know about piggyback boxes. It might, depending on the type of piggyback ECU and how it functions.
Even if 1-bit was changed for any reason, the checksum would be different and very obvious.