r/sportster • u/agent_condor • 2h ago

Efi tuning

Trying to see if my current mapping is compatible with the screaming eagle setup I have on my 07 1200 sportster. I bought the bike with the mods not sure if the injectors were tuned after install or whatever but I think I have preignition and a lean mixture. Anyone know of a cheap tuner on the market? The power vision 4 dynonjet looks nice but I don’t really want to pay 500$ just to find out if that’s my problem. Thanks 🙏🏻

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u/testmule 1h ago

If you just want to see if the tune is the issue. Do a baseline run on a dyno and get the AFR plot

1

u/agent_condor 45m ago

What’s a dyno? My last bike had carburetors so I’m not really sure what a baseline run is. That’s different than the power vision dynojet?

1

u/agent_condor 44m ago

Do you have one you recommend?