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YB Cosworth

Introduction to Engine Tuning

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Discussion and questions related to the course Introduction to Engine Tuning

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Hi everyone, i recently finished a car build and had it professionally tuned but i still feel like the car shouldn t be this laggy with a fairly decent sized turbo. Don t get me wrong the car runs well but i feel like it was faster on stock ecu with just a chip. The ignition map looks quite low for a 6.7 cr yb in my opinion. Now i am no tuner but i was expecting to see a fee more degrees in the offboost section. Does anyone here have experience on yb ?

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It depends on how it is all setup, what ECU are you running? Is the base ignition timing set properly? what fuel do you have in it?

If it's 6.7:1 compression ratio and good knock resistant fuel I'd expect a few more degrees in there too

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