Is this on a stock pump or the 12mm pump? You can get a lot more control out of the LDA with the 12mm head.
To maximize the control the LDA has there is some machining that needs to be done and some parts that need to be changed.
If there is black smoke pre-boost you need to back off of the max fuel screw and back out the "smoke screw" on the LDA. The spring in the LDA is maxed at 10psi.
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