Hi gents - my 3G Prelude has a sticker in the engine compartment saying it has been 'adjusted' for unleaded petrol. It looks like a retrofitted dealer sticker.
Presumably to 'adjust' it to run on unleaded, all they've done is retard the timing. So if I run it on Super unleaded then I should be able to get a little power back if I 'unadjust' it?
So - anyone know how to advance the timing on an 89 Prelude? And what setting should it be? Any thoughts welcome...
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3G Unleaded petrol mod?
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Thebusofwoe
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Yes the mod was to adjust the timing and, iirc, fit different spark plugs and adjust the mixture setting too 
I wouldn't go messing with it mate tbh. 
comes to mind. But the adjustment for the mixture is either in a little box in the engine bay or on the ecu in the footwell, I can't remember tbh 
I wouldn't go messing with it mate tbh. comes to mind. But the adjustment for the mixture is either in a little box in the engine bay or on the ecu in the footwell, I can't remember tbh One life, LIVE IT! Get VTEC, LOVE it. Drive a Honda and ENJOY it.
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