Quote:
Originally Posted by roninsoldier83
The problem that many of the knowledgeable members of this community have with certain tuning devices (such as the JB3/4), is that they do not have anyway of modifying timing, which can be far from optimum when increasing load.
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This is just another disguised tuner bash. For whom may be interested, I have done some testing on a private road a few days ago with a friend's car which has a JB4 (he used Map 7). I have GIAC Stage 2.
The ignition timing was almost identical between my GIAC Stage 2 pump and his JB4 map 7. We compared the excel files in detail after the runs, we did graphs. Nevertheless he beat me but I have fewer mods
I will ask for his permission to post some of the graphs.
Conclusion: the N54 ECU is not a Subaru ECU: it is more advanced. The knock sensors and knock ADAPTATION work very closely to ensure proper timing. At least from what I have seen, and I have seen hard data with back to back runs, not just talking and bashing.