ok straight to the point what engine is better the <span style="display: block;" id="mainbodyspan"><font face="Arial, Helvetica, sans-serif" size="2"> Infinity .18
Or the
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or are they the same and should i run in my new car with 20% fuel when it normaly runs on 16% nitro fuel then when broke in return to 16 % fuel
Thanks Matt
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oops double posted it
Can some one delete this please
Thanks Matt

with many of the hsp series cars / buggies stay in between the .16 and .18 anything higher will ruin the center gear or two speed depending if you got the what they call expert version sh makes great engines at a ok price but i say if the engine you have is still running strong and isn't to bad stick with that one :d but if you must buy a new engine i say sh or cxp 18 there a dime a dozen but careful on the tuning it depends on budget

and also 20% to 30 is fine smaller engines like the fual at higher % but with 30 % tune carefully and richin just a bit