the other advantage of the RC Exl is that you can move the weight around instead of it all being at the nose of the engine which helps for sport planes, but warbirds seem to need the nose weight anyway... the weight savings isn't all what everyone thinks, it only ends up being an ounce or two...<div>
</div><div>so, if it starts easy and you don't need to move the COG back on the plane, don't bother... on my mac 32 that I just put the RC Exl ignition on it starts nice, should run better once the ring breaks in.</div>