The URD Fuel Upgrade Kit for the Toyota 3.4 V6 equipped with the TRD Supercharger:
- Increase Torque
- Increase Horsepower
- Eliminate High RPM Lean Out
- Eliminate High Gear / Low RPM Ping
- Provides the needed part throttle boost enrichment
The supercharger performance upgrade kit from Underdog Racing Development is based on years of testing and components that are well proven and at the best value in the industry.
TRD did a good job developing their supercharger for the 3.4 V6, but there are three areas that were left for URD to improve on: High RPM Lean Out, part throttle boost enrichment, and Boost Induced High Gear/Low RPM-Ping. URD’ kit cures all three issues on TRD Supercharged vehicles including all 3.4 engines; however, we recommend URD’ 7th injector kit on 5VZ-FE applications where the engine does not have an exhaust gas recirculation (EGR) system.
The components contained in our complete kit are:
- Six new 310cc Lucas fuel injectors modified to fit the 3.4 fuel rail and intake manifold
- Six wire harness adapter plugs, direct plug in, no splicing
- Six 2 steps cooler Denso Power Iridium spark plugs
- Walbro 190 LPH pump
- URD Performance Calibration Unit, with built in part throttle boost enrichment module
- Restrictor T fitting and nylon vacuum line for connecting the URD PCU to the supercharger
- Tuning software
- Vehicle specific installation guide
- Shrink tubing
- URD decal
The URD Performance Calibration Unit will ship pre-loaded wiht a start-up calibration file that will get you up and running. For best results we recommend checking/verifying the tuning and adjusting as needed. Tuning may be required after installation.
Note- There is a known issue with installing the TRD Supercharger on the 1995-1996 Tacoma, and pre 1997 T-100. The stock ECU act oddly to the boost of the supercharger and takes all the ignition timing away and the engine will not make power. Many customers have installed stock ECUs out of 1997 vehicles to solve this problem. If you have a 1997 ECU in these vehicles, our fuel upgrade kit will work very well with it. After installation you will need to connect to our control unit with the tuning software and verify a good RPM signal. If you do not have a good RPM signal contact URD Tech Support by EMAIL and we can give you the work around for this issue if you have it.
When placing your order, please place your vehicle information in the comments box in the check out. We need to know what vehicle and year it is so we can include the correct vehicle specific installation guide.
Note- Thermostat no longer included in the kit.
Legal in California only for racing vehicles, which may never be used upon a highway.