Thread: 200 I6 finally going back togther

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you're gonna run a carb now? i thought you were gonna go TBI? or is that just something you're going to do later and for now just running a carb?

Originally Posted by thesals

you're gonna run a carb now? i thought you were gonna go TBI? or is that just something you're going to do later and for now just running a carb?

I was going to run TBI EFI using a modefied 3.8 CFI TBI and a Megasquirt II ( has ign controls ) but I found out that it wasn't the best idea. because under boost it would have gone lean if the engine was tuned 'right' because the map sensor can only see boost, it cannot see airflow, if it was spooled up at 2k, it's going to use the same values up until the engine blows from running lean. Megasquirt only uses O2 sensor readings below 70% throttle, otherwise it uses open loop fuel tables. it would have had to be tuned rich to get the right mixture's for high RPM boost. so until they come up with somthing that uses a MAF or uses O2 sensor readings above 70% throttle. so for now, I'll run the Holley 2300 2bbl modefied for boost, and use the MSD 6 BTM for the timing retard.