EFI
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But how exactly do you "cut" boost with HPTuners? Yes you can limit timing and all that stuff, but still not sure how a computer can limit hard boost from a PD blower short of limiting how much the throttle body opens and stuff.I use HP tuners, there are a couple different tables I had to work with. Primarily for IAT Temp there is a table that modifies timing vs IAT . It is called IAT Spark. There are also a number of Fuel cut tables in under the engine tab, in the DFCO area. They deal with oil temp, coolant Temp, and Intake air temp. Along with that there are Torque limiters based on temp. I usually set these lower than the fuel cuts as they are less harsh on the drivetrain, but they take a fair amount of more tuning, and I am still not aware of all the conditions that set the max torque number, so sometimes this does not always work. Luckily on Track when pushing hard the Torque limit values vs temp seem to work most of the time, and the controller just limits my throttle opening. I have given thought to putting a controller on the bypass valve of the whipple, It would be alot less cryptic to figure out
IAT spark is not going to lower the boost value seen in the manifold, it's just going to protect the engine from timing related issues that come with high cylinder temps.
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