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jb4998 jb4998 is offline
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Car: GTI
Default VW GTI Maintenance and Prerequisites to JB4? - 05-18-2020, 11:58 AM

Hi guys,

After doing research I see some requirements for installing JB4 on other platforms. Some recommended coil packs and plugs, insisting these items would start to fail within days of the JB4 install. The platform just needs fresh hardware to fuel the extra power, i'm fine with that.

I am wondering if there is any recommended maintenance for the GTI? I have a 2016 model, and it has never idled smoothly. I can record misfires on it with the OBD11 all day if I want, which is apparently normal until you get a CEL.

When I added JB4 to the mix the power is definitely there, a huge increase in performance. But I also noticed my idle is a little more rough, and the engine heartbeat is more pronounced.

Does the GTI have any recommended prerequisite hardware before installing JB4?

I am at 37xxx miles, JB4 has been in around since about 34x.
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