Originally Posted by
Stu @ M Developments
You will be fine mate, but research some basic info first so that you dont damage things while learning.
As a rough guide, "HOT" idle and cruise fuelling i would set to around 13:1 AFR and then full load around 11.5:1 AFR.
Spark wise:
Idle at 14 deg, cruise at 20deg and full load at 5deg will allow virtually any averagely powered petrol 4 stroke to be driven at part throttle with no real problems bar some retard.
Det cans are still adviseable just in case your compression is 19:1 not 9:1 as you thought. LOL
These figures will work and be safe for almost all petrol 4 strokes. You can then go about tuning from there.
Ah well, he best ignore my advice then. Doh.
thank you stu like we have said we are wanting to lean. so the more info we get the better
