SKU: 30950460084

JB4 EWG Add On Connectors for Kia Stinger 3.3T, G70, Infiniti VR30 Q50 Q60, Mazda 2.5T

Sale price$1524.60 Regular price$1694.00
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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Description

JB4 EWG Add On Connectors for Kia Stinger 3.3T, G70, Infiniti VR30 Q50 Q60, Mazda 2.5TThe new EWG connections allow the JB4 to directly add and subtract wastegate duty cycle (WGDC) from the wastegates providing additional tuning flexibility. Most useful for modified vehicles that are having problems targeting boost properly and will also improve boost response, spool up, shifting performance, and overall feel. Installation involves plugging the wires in to the JB4 harness, updating the JB4 firmware and settings, and attaching them to

The new EWG connections allow the JB4 to directly add and subtract wastegate duty cycle (WGDC) from the wastegates providing additional tuning flexibility. Most useful for modified vehicles that are having problems targeting boost properly and will also improve boost response, spool up, shifting performance, and overall feel.

Installation involves plugging the wires in to the JB4 harness, updating the JB4 firmware and settings, and attaching them to the wastegates which are relatively easy to reach from the engine bay.

Note JB4 models shipped prior to Oct, 2019 may also require an updated 2580 master chip (available here) if EWG wires trigger a startup fault code that clears until restarted.

Click here for installation directions and discussion

JB4 EWG Features & Benefits

• Provides additional tuning flexibility
• Directly controls the wastegates

• Improves boost response
• Turbo spool up
• Shifting performance
• Overall feel

Installation involves plugging the wires in to the JB4 harness, updating the JB4 firmware and settings, and attaching them to the wastegates which are relatively easy to reach from the engine bay.

Download install guides

Kia Stinger/G70 and Infiniti VR30 Q50/Q60

Mazda 2.5T V2

Shipping Notes
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Exchange/Return Notes
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SKU: 30950460084

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4.6 ★★★★★
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Christopher
Massapequa, US
★★★★★ 5
Slip-on ready and great quality
Size: 9, Color: Black
These shoes were stuff for the first half hour but then feel great. Well worth the chance and money. Great quality and slip-on easy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
D
Verified Purchase
Derek Preston
Fort Morgan, US
★★★★★ 5
Great buy
Size: 11, Color: Tan
Great fit comfortable look good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
M
Verified Purchase
mike t.
Lexington, US
★★★★★ 5
Great shoes
Size: 14 Wide, Color: Black
My shoes look good and feel good and now I’m going to purchase the brown pair I saw
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
N
Verified Purchase
Nicholas D. Clark
Omaha, US
★★★★★ 4
Don’t buy for restaurant industry
Size: 10.5, Color: Black, Size: 10.5, Color: Black
Good looking shoes, fairly comfortable and good value based on the description shared, so I don’t feel it’s fair to rate them lower than 4 stars. I had high hopes for them based on previous reviews from others saying they wore them in the food and beverage industry that mentioned their quality and durability, however I strongly recommend looking elsewhere if you do. I purchased these to wear working in a full service upscale restaurant and in less than two months have managed to have torn the material on the middle exterior section and the bottoms of the shoes are already completely worn down. Good design, but the durability needs to be improved if they’re to hold up for that industry.
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Reviewed in the United States on July 18, 2025
D
Verified Purchase
Damon Richards
Whiting, US
★★★★★ 1
DO NOT BUY (lasted less than 7 months)
Size: 11, Color: Black, Size: 11, Color: Black
I bought these for work as a bartender in August of 2025. By December, the tops were scuffed, frayed, and peeling beyond repair, and by February, the soles were coming off. I’ve never had a pair of shoes with such low quality.
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Reviewed in the United States on April 11, 2026

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