JB1 to JB4 Upgrade Kit

Marsoni

M251S

$175.00

Get it in 3 business days with 1 day shipping. Friday, May 29

JB1 to JB4 Upgrade KitUpgrades your existing BMS Stage1 to a EA888 JB4 BETA system. The JB4 BETA features CANbus connectivity for more advanced tuning, direct AFR control, advanced safety systems for boost, air fuel ratio, fuel trims, and engine knock, boost mapping by gear for improved traction, integrated water meth control, and much more. The upgrade kit cost is $125 outright. There is no longer a core exchange program available. After the upgrade you can keep your old

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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I bought this book because it was required for my college course and cheaper on Amazon. The book is good, especially if it's required for a course. However, I ended up not using much of it, so it was kind of a waste of money. However, if you do need to use it and will use it more than I did, it's worth the savings to buy it here.

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Reviewed in the United States on February 4, 2025

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Great

Massapequa, US

★★★★★ 5

BookReview

Format: Paperback

Great and fast shipping

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Reviewed in the United States on September 13, 2023

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