![]() ![]() But I didnt get the full refund on my money. So i decided to return it to them after 1 month. The performance and fuel consumption on my vehicle ( 2008 rdx) is still the same. While I had the JB4 installed, I didn’t notice a significant loss or gain in my Alltrack’s fuel economy.Īfter a few runs to Castle Rock to get some data on MPG, I’ll make another JB4 post, this one specifically MPG apples – apples with actual numbers. 33 reviews for Performance Chip Tuning, 2.7 stars: Totally a waste of money for this one. I’m going to leave it off for a few weeks to get even more of a gauge on how much power is missing and how fuel economy is affected. See my brief comment about life with the JB4 here. JB4 logged data – 2017 Alltrack manual transmission WOT I ran the JB4 with its stock settings for a month before increasing the boost at certain RPM levels… custom map. You know what? The stock VW 1.8 is pretty good the way it is!.But the kick made the throttle touchy right where I set higher-than-stock boost levels (2k-3k RPM). ![]() The midrange kick is gone – 2500 to 3500 RPM, of course.The absence of the unit - after using it for 3.5 months - makes a difference felt just as strongly as adding it. I think getting a read on the JB4 is made easy by removing it, just as much as it is installing it. I’ve driven just 20 miles without it today, and here is my review of the Burger Tuning JB4. I don’t have drag strip run data, it’s only about my thoughts and impressions. ![]()
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