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ECM controlled alky working great! Now how much boost?

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Daniel Jost

Squirtin six
Joined
Oct 11, 2003
Messages
1,288
Well as the topic states I have my ECM controlling variable rate alcohol injection and it is working great! I have a single 14GPH nozzle setup. I am running 91 Octane/Alky and the ECM is keeping boost around 24PSI 26* timing, without any detonation issues on the parts in my Sig. My question is with this size nozzle at full flow what should I be looking at for my upper boost limit with pump gas? I am asking because I am taking the car to Kansas this weekend to stick it on the dyno but I am not sure if I should work on knocking out a E85/Meth tune before getting it on the dyno since I want to up the boost to around 28-29PSI.

Thanks, Dan
 
I beleve you are there with 91/alky. With that much timing you dont have any room for errors from my experience. keep it 10.8 afr.
If your just looking for motor potential at the dyno, get the Octane up for safety margin.
 
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