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Originally Posted by CMeSpeed

Thanks for your time Magnus.
Can you tell me what a piggyback chip is? Sounds like it might be tied to the stock chip?

Do you have any what your friend wound up paying for this project?
I'm guessing there is some savings if I don't replace the stock components but upgrade them instead.

I'm not sure what is done in a top end rebuild.
Thanks

Piggyback is a chip that allows you to easier tune the car while still using the stock ecu.

I think the total was about $15000 in parts and valve job, every thing else he did him self.