Recent content by oldblue550
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550 gearbox slipping/ engine surge
Box tune. That hard part is finding someone that can do it.- oldblue550
- Post #48
- Forum: D40 Engine & Drivetrain
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550 gearbox slipping/ engine surge
I spoke toke to uprev about tuning my box. They are very well known for tuning the 370 box. They replied with this first. "We would need the ecu/rom number to find out if your truck is supported. If you do not have an uprev cable to hook up to your vehicle you can go to one of our licensed pro...- oldblue550
- Post #46
- Forum: D40 Engine & Drivetrain