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I’m contemplating getting a JB+ vs JB4. The website says upto 30whp with JB+ and 40whp with Jb4. Also, the install for JB4 looks like a hassle. Has anyone with the JB+ driven a B48 car with a JB4? If so, any significant difference? $529 vs $199 is a huge difference for just 10whp.
PS - Coming from an A4 B9 with a Racechip ultimate, the stock 330i definitely feels slower. Thus the need for more speed.
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