Underdog Racing Development

URD 6 Injector Fuel/Timing Upgrade for TRD 5VZ-FE Supercharger	$996.00

Description

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URD 6 Injector Fuel/Timing Upgrade for TRD 5VZ-FE Supercharger

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's kit cures all three issues on TRD Supercharged vehicles including all 3.4 engines; however, we recommend URD's 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 318cc Bosch 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 vynal 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.

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.

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.

Legal in California only for racing vehicles, which may never be used upon a highway.

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• Underdog Racing Development Homepage
• Other products

Reviews

by Vincent Neuman

Date Added: Sunday 29 July, 2007

I added this to my 04 Supercharged 4x4. This is what the S/C was designed to do with this kit. Before I got the kit, you can feel the engine starving for fuel. After this kit, the truck jumps forward. Study up on tuning, it can be pretty tricky. Tuning the timing (to get rid of engine ping below 3000 RPM) is extremely easy, the fuel tuning (to maximize efficiency and power) not so easy, but doable...

Rating: [5 of 5 Stars]

by aaron amick	Date Added: Friday 25 September, 2009
If you plan on installing a S/C don't forget this kit; installed kit and S/C in about 12 hours including the FTC unit and no issues, no check engine lights. My buddy installed a S/C without any other upgrades and he's been suffering the usual issues of lean out and ping and not near as much power. This kit is a must have!.. Rating: [5 of 5 Stars]

by Nicholas Woodyard

Date Added: Thursday 24 May, 2007

The URD Fuel Upgrade Kit was the single best upgrade I did to my 2001 V6 Toyota Tacoma. I ordered the supercharger and fuel upgrade kit through URD and installed it all over a weekend with a couple of friends. The kit was easy to install and contained all the parts I needed to make my Tacoma fly. The supercharger and URD kit were on my vehicle for 118,000 miles without a single problem. I called my friends at URD every 20K miles for replacement spark plugs but that was about it. My truck is now gone, I traded it in last week on a new Tundra. I've owned many vehicles in my life but the Tacoma was one I'll always remember thanks to the guys at URD. The truck ran amazingly well, even with 118,000 miles on it. For those of you considering a supercharger install for your Tacoma...don't bother doing it unless you're going to do it right with URD...

Rating: [5 of 5 Stars]

by Brian Cox

Date Added: Tuesday 06 February, 2007

I installed this system on my 1998 4Runner SR5, and all I can say is the difference is night and day! The installation instructions are straightforward and clear; you can get up and tuning in a weekend with the help of Gadget's U-Tune guide. All of my ping has been eliminated, along with a significant increase in power accross the RPM range. There are no two ways about it: if you have a TRD Supercharged 3.4l V-6 Tacoma or 4Runner, you need this kit!..

Rating: [5 of 5 Stars]

Reviews

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This product was added to our catalog on Saturday 31 December, 2005.
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