SKU: 78550128896

Forge Motorsport Toyota Yaris/Corolla GR Dump Valve

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Description

Forge Motorsport Toyota Yaris/Corolla GR Dump ValveThis Blow Off, or Dump valve, has been developed for the Toyota Yaris GR Turbo engine that has the electronically controlled bypass valve (OE Part no. 7. 04654. 08). It is recommended for any vehicle where the boost pressure has been increased by an ECU software upgrade and for unmodified vehicles operating in warmer climates, as a solution to the many failures that have occurred. Unfortunately, the failure doesnt always result in a check engine light

This Blow Off, or Dump valve, has been developed for the Toyota Yaris GR Turbo engine that has the electronically controlled bypass valve (OE Part no. 7.04654.08). It is recommended for any vehicle where the boost pressure has been increased by an ECU software upgrade and for unmodified vehicles operating in warmer climates, as a solution to the many failures that have occurred. Unfortunately, the failure doesn’t always result in a check engine light as the valve can still be blown open by the boost pressure, so you may not be aware that you are losing power due to this. This prevents the diaphragm from sealing.

The Forge motorsport valve solution is available in either Atmospheric where a noise is heard when the throttle is lifted or the Factory type non noise recirculating valve.

Our alternative is a fully engineered solution offering both significantly improved reliability. The Forge valve is piston based, there is no diaphragm to fail, and of all aluminium billet construction, it replaces the original unit with a pressure/vacuum operated piston valve that still also retains the desirable OEM ECU control, over valve actuation.

In The Box:

1 x FMDV34 Valve
1 x 2.5m of 4mm Vacuum Tube
1 x 4mm Brass T-piece
1 x 3 port Solenoid and fixings
10 x Cable Ties
1 x Uprated Red Spring
1 x Wiring loom
1 x Forge USB Instructions
1 x Forge Keyring and Sticker

Download Installation Guide 




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Exchange/Return Notes
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SKU: 78550128896

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4.4 ★★★★★
Based on 5 reviews
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Verified Purchase
Enri
Whiting, US
★★★★★ 5
Ten years of ownership…Thank you, Timex!
Color: Black, Size: One Size
Solid watch for everyday wear. I have worn this watch for over 10 years. I let a watch shop replace the battery about every 18 months. Other than the original band (which lasted 5 years) I have had zero problems. Still looks great, rugged and manly😇 Overall I recommend this watch for its value, reliability, simple clear design, legible hands in all light conditions. Great watch!!!
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Reviewed in the United States on February 13, 2026
G
Verified Purchase
Guadalupe Reyes
Houston, US
★★★★★ 5
Solid Watch for Everyday Casual Wear
Color: Black, Size: One Size
I have purchased this item other times and I’m quite satisfied with wearing this watch everyday with casual wear. The size is just right not too small or large.
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Reviewed in the United States on May 23, 2026
B
Verified Purchase
BrianNH
Alexandria, US
★★★★★ 4
Nice simple effective inexpensive watch
Color: Black, Size: One Size
I just ordered my second one of these. They are cheap, keep good time, show me the date, and last a long time. My last one lasted over 10 years. The only thing wrong with the last one was that the battery needed replacement (I think it was only the second time it had needed a battery in all the years I had owned it) at the same time the band wore out and broke. Rather than buy a new battery plus a new band, I just got a new one. I am hard on watches, and this one stood up very well. I regularly shower and swim with it on, and no problems. It doesn't have a lot of functions I don't need, like stopwatch, multiple time zones, etc. I have found those things more of a bother than a benefit, because any time you bump the knob against something, the display changes and you're always pressing all the buttons multiple times just to get the simple info needed- like what time is it and what is the date DEC 2020 UPDATE - I am ordering another one of these. The last one, I bought in mid 2019. Early in 2020, the date function quit working. By the end of November, the whole thing quit working. I know it's not the battery, because the light still works. So I am reducing my review by one star, and we'll see how well a new one does. The watch before the current one lasted about 10 years, so getting only a little over a year out of the current one is not good. Perhaps the current one just wasn't as good as the previous ones. It's entirely possible that they keep making the same watch out of lesser and lesser materials and workmanship.
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Reviewed in the United States on November 21, 2016
A
Verified Purchase
Ann
Draper, US
★★★★★ 5
Timex. Life is ticking.
Color: Black, Size: One Size
A family member is headed off to Navy boot camp and is required to have a watch-a black watch. But...it cannot be anything in the realm of, be like, or indeed be an Apple Watch. The search began for a simple timepiece. Economy was important since after the 8 weeks of boot camp ended, use of the current watch would be resumed. Enter Timex...(the world's largest manufacturer of watches and mechanical time fuses). During the Amazon search there were all manner of economically (actually cheap) watches noted to be available, so many that it was simply overwhelming. Timex...tried and true since 1854 (just a fun fact, but actually attests to the quality of the company) was the chosen one. A simple but reliable timepiece was required, and certain qualifications were needed. First, it had to be an accurate time keeper and have a second hand, and have a date indicator. Secondly, there had to be an element of water resistance (this is Navy boot camp after all, so water is important!). Thirdly, it had to be black. Fourth, no bells or whistles whatsoever. Finally, a face with 24 hour/military time would be a bonus. This Timex Rugged Core Expedition Analog Watch fit the bill. Upon arrival it was packaged in a traditionally square box the size of the watch, no frills but sturdy enough to ward off damage during shipping. Once opened the first thing noticed was the face of the watch. It was black, with white numerals in both standard and 24 hour/military time, had a red second hand, luminescent hour and minute hands, and date indicator. The nylon band was also black, had ridges, and had a fastener like a belt. At the end of the band were two extrusions which seemed to lock the excess band into place once it was fastened. After wearing a number of days, the watch has kept excellent time matching the Apple Watch. Both watches were worn on the same arm at the same during the day and during sleep. They were worn during regular daily activities, during exercise and during strenuous garden work such as hauling, digging holes, dragging 40 lb bags, etc. Time was checked multiple times per day, and the time on each watch was exactly the same every time checked. The Timex was water resistant during a 5 minute shower and while submerged water. This is not a dive watch but, according to the ad, is water resistant to 50 feet for light swimming. The performance of this watch has been more than satisfactory executing in stellar fashion everything it was stated to be able to do. I can recommend this watch for boot camp purposes without reservation. Top 3 Likes: -Reliable keeping accurate time, has military time numerals -Is water resistant as tested -Is black, attractive with luminescent hands, second hand, date, and light up face Top 3 Dislikes: -The band is stiff and somewhat difficult to latch -The two little extrusions do anchor the band, but are difficult to undo to take off the watch -Only two dislikes!
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Reviewed in the United States on September 28, 2024
R
Verified Purchase
rlbrandner
Louisville, US
★★★★★ 5
Timesx quality still rules.
Color: Black, Size: One Size
Excellent everyday watch. Stylish, easy to read, and accurate. Needed a knock around watch and this puts up with it's share of abuse. It's a bit more expensive than some others in this class, but Timex is well-worth the money in quality. I use mine for eveything except when I need something more formal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 1, 2025

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