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No Tach and won't accelerate past 40

2.6K views 6 replies 4 participants last post by  Derek  
2014 Turbo manual suddenly went sluggish, not wanting to go over 40 and tach went dead. I took it for a ride next day to see what's up, and all was good for about 15 minutes with great acceleration through gears, then same dead tach and sluggish acceleration to limp home. Thoughts??
We'd really need to know a bit more about the car such as maintenance, what mods you've done, and if it's tuned.
Thanks.