What's the best upgrade I can do on my haldex system looking to upgrade I think there's a sports upgrade? ??
the beast
Joined
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6,806 Posts
Shame United Motorsports are assholes to deal with plus you get one tune with the UM haldex flash. HPA controller isn`t without some teething problems but a much better design with three set maps plus you can set the haldex to how you want to work as well. Another plus is the HPA controller can be easily unplugged and sold on if you wish.
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