Having the ECU remapped and a larger pulley installed bringing the SVR up to ~630BHP.
Just thought I'd check in here to see if anyone has had their RRS tuned and if they are happy with the performance gains?
I haven't measured 0-60 unfortunately. With the same fast starts from a stop using the same pedal travel, the vehicle moves with a bit more urgency if that means anything.
With my friend on side seat (we do not have any expensive instrument...) we saw a 4.2' (no pulley).
Zero to 60 times web site has 4.5' as per no tune version.
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