Quote:
Originally Posted by tboudre
I'm running a 2011 BMW 335i xDrive with 6-speed Automatic transmission. I'm having thermostat stuck problems so, I figured I'd replace thermostat, water pump. Figured I'd do the GFB DV+ upgrade while I was down there. Also had a few diverter stuck codes, so I ordered an new piedmont diverter valve as well as the GFB DV+. No turbo upgrades or downpipes, just the JB4.
My question: Spring or no spring?
Are the troubles only with manual transmissions? Any worries with stock turbos & the spring?
Thanks a bunch,
Troy
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I have had no issues, but I installed mine without the main spring. it said it would improve performance with the main soring installed, but might cause a CEL and that was a no go for me.