To our customer who wishes to run headers and add EPA catalytic converters where the factory did, we are proud to introduce our performance package for Lexus IS-F with Gesi EPA cats! This package includes our new Tuned Intake System, PPE Headers with Gesi Cats, all combined with our famous ECU upgrade tune using a simple OBD device.
RR Racing Tuned Intake System
Throughout our rigorous testing program, we discovered that the OEM airbox intake is adequate up to about 410 whp, but beyond that level, it becomes restrictive. Tuned header equipped cars seemed to max out at around 410-415 whp. So it turns out that once you add headers and improve exhaust flow, the intake becomes restrictive! Our ability to tune the IS-F’s ECU has allowed us to develop the ultimate intake system by recalibrating the airflow curve to allow the use of a much larger MAF (mass airflow) housing.
PPE Headers W/ EPA Catalytic Converters:
The PPE RCF/GSF Headers make a significant increase in flow compared to the stock manifolds. Tube lengths and diameters are increased coming together into a ported 4-1 parallel merge collector. Completely TIG welded construction with thick 16-gauge tubing for long lasting power gains.
Equipped with 4" inlet/outlet Gen 2 G-SPORT 400CPSI catalytic converters.
Please note that the headers do not come with manifold gaskets. For older cars replacing manifold gaskets may be necessary. We offer these as one of the options with this product.
RR Racing ECU Upgrade Information
RR Racing was proud to make history by being able to offer an OBD device tune for Lexus IS-F engine control unit (ECU)! The Lexus IS-F ECU is a very complex and sophisticated engine management system. RR Racing has been developing this upgrade tune for many months, intimately understanding IS-F ECU's parameters and structures, testing various changes to optimize power and torque effectively while retaining stock fuel efficiency, knock control sensitivity, and other built in safety features. During the development and testing period, we have logged many track hours and over 2,000 miles of road testing and road-dyno logging with many more hours spent on a sophisticated Dynojet dyno at a top-notch climate controlled facility.
So as you can see this was not a weekend project for us, where we slapped on IS-F on the dyno, played around a bit for a day or weekend, and and now we are selling a tune. We had done most of our development on the road, under real world conditions, doing hundreds of runs, data logs, and hundreds of miles of testing between re-maps in order to determine how the ECU reacts to changes and adjust learning parameters. We have developed a full understanding of the following ECU functions/parameters, including but not limited to:
Our on road impressions are that the IS-F pulls much more smoothly and linearly, with excellent midrange and top-end improvement. This was evidenced in our ignition curve data logs shown below where a combination of ignition and cam timing adjustments resulted in a much more linear and aggressive ignition curve, free of any detonation or large ignition corrections.
After extensive road dyno and data logs, we headed over to top-notch climate controlled Dynojet testing facility and conducted many hours of dyno tests.
Ordering Procedure
Updates
If we make any version updates to this tune, we will make any such version updates available to our customer free of charge. With the OBD flashable device, we will email you an updated file.
Important Disclaimer
RR-Racing cannot ensure the applicability of manufacturer's or third-party warranties after performing this modification. Likewise, RR-Racing does not provide any warranty, written or implied, to the engine or drivetrain of your vehicle. Additionally, certain tuning features, such as removal of check engine light (CEL) triggers are illegal for road use. RR-Racing provides these ECU tuning services for vehicles used in racing only. RR-Racing does not condone the removal of any emissions related device on vehicles used on public roads. RR Racing is not responsible for any accident caused by the use of our products and ECU upgrade -- our products are intended for off-road use solely at purchaser's risk. By buying this product, you agree to the terms of this disclaimer.
Please note that with all our testing, the OBD flashing of Lexus's ECU is new. If you encounter problems during or after flashing, you may need to send us your ECU for re-flashing using our equipment.
Other FAQs:
Why do you provide a range of “tuned gains,” not a precise value?
There are many factors that influence dyno results and lead to variability in power measurement. Additionally, your ECU is constantly making changes based on sensor feedback that significantly influence engine output – and this is the case even on a stock ECU. So bottom line is that regardless of the mod you install, actual gains will vary. We make every effort to provide actual, factual, and transparent dyno data for our customers.
Do you recommend aftermarket intakes?
We do not recommend any aftermarket intakes that remove the factory airbox. The only recommended intakes are intakes pipes like our RR-Racing Intake pipe, or equivalent.
Can you work with me or my tuner to improve my tune?
In most cases yes. If you plan on taking your car to the dyno, please contact us ahead of time in order to discuss the type of datalog data we need in order to fine tune your ECU, should it be required. In most cases, custom tune fees will range from $200-$300.