This service requires you to mail your ECU so we can tune it! We currently do not offer GS replacement ECUs.
Unleash the full potential of your Lexus GS300 with our cutting-edge performance engine tuning service. Designed specifically for the GS300, our service transforms your vehicle into a powerhouse of performance. By meticulously optimizing your engine's ECU settings, we unlock significant gains in horsepower, torque, and throttle response, ensuring your Lexus performs at its peak.
Customized Performance Optimization: Our tuning service enhances your GS300’s performance for daily driving, racing, or anything in between.
Advanced Technology: Utilizing the latest in tuning software and hardware, we fine-tune your engine settings to achieve optimal performance without compromising reliability.
Expert Technicians: Our team of certified professionals brings years of experience in engine tuning and automotive performance, ensuring your vehicle is in expert hands.
Noticeable Performance Gains: Experience an immediate improvement in acceleration, power output, and driving dynamics, making your GS300 more responsive and enjoyable to drive.
Satisfaction Guarantee: We stand behind our tuning service with a satisfaction guarantee, offering support and adjustments to ensure your complete happiness with the performance enhancements.
Product Q&A:
Q1) Where do I ship my ECU and how should I package it?
Ship your ECU To:
Quantum Auto Tuning
4100 Kincaid Lane
Salida CA. 95368
Please include a copy of your order in the box. Here is a video on how to package your ECU:
Q2) Why only 2002-2005? Why is it that 2001 cannot be fully tuned?
Before 2001/2002 The ECUs were not designed to have the memory chips rewritten and many cannot be rewritten.
Q3) Can I make a 2002 ecu work in a pre 2002 vehicle?
Sure, But you will have to change both the engine and chassis harnesses, or make an adapter harness to go in-between which is a huge amount of work.
Q4) Will Monitors show ready after the tune?
Yes and no. Normally the tune will show monitors ready for testing. If you have any of the emissions disabled it will never show monitors ready.
Q5) Do you warranty purchased/supplied ECU's?
1 Year from the date of purchase
Q6) Are there changes to the automatic transmission tune?
Yes! Shift speed and firmness are drastically improved, Shift time vs speed vs pedal position is also improved over stock.
Q7) Can you make an automatic ECU into a manual ECU?
Yes we can!
Q8) Will the tunes work with an aftermarket intake?
There is no better intake than the stock intake for many reasons. But you can use some aftermarket intakes with the tune.
Q9) Will the tunes work with headers?
Yes! The header plus the tune makes for more power than either mod can make individually! Be sure to list your mods in the notes on checkout!
Q10) What's your return policy on tuned ECUs?
There are no returns on supplied ECUs, ALL SALES ARE FINAL. if there is a problem with the ECU within 1 year we will replace it for free. No questions asked. On customer-supplied ECU if you're not 100% happy with the tune, Send it back and we will return your ECU to stock.
Q11) What is the immobilizer removal?
Watch this video!
Q12) What is sub O2 Removal?
This Eliminates the O2 Sensor codes from the installation of headers without sub-O2 Sensor Ports.
Q13) What is the crackle tune and how does it work?
Crackle tune makes burbling and crackling noises on deceleration when the throttle is slightly pressed down.
Q14) What is the rev limiter change, and what do you recommend?
This is only available for manual ECUs. It raises the maximum rpm limit of the engine. On a stock GS300, we recommend a maximum of 7250RPM
Q15) Will I need a locksmith/mechanic to pair my keys?
No, You will not. The ECUs we sell come ready to pair with the first key used to start the car after it is installed. If you send in your ECU the original key data is kept on the ECU. The only time you will need to have a locksmith come and pair your keys is if you send in an ECU that isn't from your vehicle, like one supplied by a junkyard. In which case you can have the immobilizer disabled to get around that.
Transform your Lexus GS300 with our performance engine tuning service. Whether you're aiming to dominate on the track or simply enhance your daily driving experience, our expertly calibrated tuning unlocks the true potential of your vehicle, making every drive exhilarating. Contact us today to take the first step towards realizing the untapped potential of your GS300.
