Details The Apexi AVC-R Boost Controller allows flexible control over virtually every aspect of boost control, such as injector pulse monitoring and gear specific boost control. The Apexi AVC-R is a digital boost controller that allows the user to modify the boost pressure level on turbocharged vehicles. While there are many boost controllers on the market, none includes as many features as the AVC-R, period. Despite all of the complex features included in the unit, the AVC-R is flexible enough to be used by beginners.
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Read directions to check, but these should be very close for all FDs. Grph Scale: These are units for the graphing view modes only. It works The basic idea is, if boost consistently overshoots, increase number; if boost oscillates, decrease number.
However, I found no perceptible difference in boost pattern, no matter what I set this value to. With this turned on, I found that the unit kept dialing my transition spike back IN eliminating spike is later. But learn mode may work better in your car Start-Duty This controls initial spiking - i.
This feature reduces the max boost a little, when going from negative pressure to boost I found that the most useful display mode for tuning was 1-channel, displaying boost, then hit [up] to display a peak-hold value, hit [right] to reset this value, as needed. Let the car warm up and then go for a drive You should develop 7psi max 0. My boost pattern is , dip to 5 before transition and then back to 7 to redline.
If there is a problem with the install, i. I got psi at rpm. If so recheck everything. You should get close to 9psi If you set the duty cycle too high, the controller will not be able to control boost, and will run higher than 9psi.
If the boost is not going above 7psi, there is a problem with the install. Recheck everything. Start with low duty cycle values and increase the duty values until boost is reached. Also, pick the lowest value that holds desired boost It may take a small reduction of duty cycle, i. I had to reduce my boost, but most everyone else I talked to only need to reduce duty cycle.
Dialing out the spike perfectly takes a LOT of time
APEXi - AVC-R Boost Controller
The next step is to program the AVC-R. There are some ground rules that apply here: When making boost adjustments, always get a friend to drive. This frees you to make the computer adjustments. You are heading for a crash if you are trying to drive under extreme boost conditions and fiddling with the little buttons at the same time. Trust me on this. Always make sure the pedal is fully to the floor when reading the boost.
How to Install and Tune an AVC-R Boost Controller
Read directions to check, but these should be very close for all FDs. Grph Scale: These are units for the graphing view modes only. It works The basic idea is, if boost consistently overshoots, increase number; if boost oscillates, decrease number. However, I found no perceptible difference in boost pattern, no matter what I set this value to. With this turned on, I found that the unit kept dialing my transition spike back IN eliminating spike is later.
Once we have the NE points set we need to take the car out and do a boost level check. Now we can go along the graph using the arrow buttons and raise or lower the boost at any points that had troubles. In most cases turbos that run internal wastegates the boost tends to taper off slightly at the higher end of the RPM scale. Go and check your boost level again, and this time monitor when the AVCR comes onto full boost most cars with smaller turbos should acheive this around rpm basicaly when we have learnt where full boost occurs on the RPM scale, simply take rpm off this number and we get an RPM number that i like to call a SAFE rpm zone. SHould look like the graph below; graph is only an example, different engines will vary.