There isn't any size XXX jet goes with XXXX upgrade. You need to read the plug and adjust accordingly. On these engines the small amount of extra air it gets from no filter will change the required jetting from running it with a filter. Small engines are more picky and respond in more drastic measures than say a v8.
Best bet is to park it and order the jet kit for one of these so you have them on hand to tune with. You can pick up a kit on ebay for around $10 now. It will seem like a waste to have the extra 9 jets sitting there once you get it tuned but it saves a ton of headaches than just ordering one at a time and waiting for shipping.
Last edited by neo71665; 07-22-2018 at 09:28 PM.
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