so im looking to get a new motor
The SLR-5 or the Atom GTR .21 engine , - I have had good luck with the OS vspec engine , love the way it tunes and the incredible level of confidence I get from it reliability If I could buy another new I would , correct me if I'm wrong but I believe the GTR Atom engine is a VSPEC copy with improvements such as the oiling hole on con rod. has anyone ran both motors to compare - or even ran a vspec then GTR - are they the same. thx