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Re: e85 question
I have had SMIC 16G pump gas cars that we couldn't safely run over 13psi on. A good tuning system that can control timing will greatly increase your chances of being able to run higher boost on pump gas. The stock 1G timing maps are too much for decent amounts of boost on pump gas an using a tuning system like an SAFC, MAFT or VPC that just tricks the ECU via the airflow signal, they also makes things even worse by adding timing if you lean out the mixture. If you richen the mixture, then you hit fuel cut.
I did one SAFC E85 car with a 16G and stock SMIC that we were able to get up to 20psi before we ran into too much knock and had to stop there(the SAFC was making it add all kinds of timing). I tuned CVDs Colt the other day with a 16G and stock DSM SMIC on E85 and we were able to run something like 26 or 27psi, but we had full control of everything using EPROM tuning and could keep the timing in check.
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