I’m not really in the market, but what are people’s thoughts in this? And why would this only work on 2013+? Thanks

Velocity AP piston and rod set

 

Previously mentioned on the F-Type sub-forum, see here: https://www.jaguarforums.com/forum/f...1/#post2608133
My WAG is that VAP intend these for use with their upcoming E85 tune on the V8 (they already have this for the AJ126 V6) and that upgrade/tune only works with the later Bosch ECU and not with the earlier Denso ECU, and the changeover of ECU was in 2012/2013.

 

I wonder what they changed? No compression ratio listed in their add?
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They are exactly what one would need for high boost application/high cylinder pressures.
Currently in the process for building an AJ133 engine and using the new 2300 Harrop super charger. First one in Australia i beleive.
Goal is 900HP