Quote:
Originally Posted by arcosine
You can bias the pump on the wideband o2 sensor to fool the ecu and run near 18:1 FAR.
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Only danger with this is that the ECU "trims the fuel" (probably the wrong term) to 18:1, and then when it hits open loop, it'll drop that down to perhaps 14-15:1 and with the high temperatures you could destroy something.
Ideally the ECU should be reprogrammed. If there's no emissions testing, maybe you could look into a Megasquirt II system with wideband sensor...it's not that expensive, although it could take a while to recoup the cost.
I guess if you go with the fooling the ECU route, you can install a crude water/methanol injection system that is activated when you floor the throttle, to cool the engine down a little.