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SVTPerformance's Chain of Restaurants
The Blower Bistro
Pure Stock 2012 5.0 VMP Stage-2 Results
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<blockquote data-quote="mikengail" data-source="post: 14161837" data-attributes="member: 143239"><p>I was told a couple of reasons for the first graph. One, the converter in the auto wasn't locking up properly throughout the run. The other, the ECM kept enriching the A/F at some rpm points overprotecting the factory cats. Justin solved it all in one update. As for the 6600 limit, my installer told me that the primary purpose of these runs was to zero in the tune for all around performance and daily driving reliability. No need to run it all the way up for that. An extra 300-400rpm wasn't going to tell him anything more about the validity of the tune. I was certainly good with it. I don't know to what rpm Justin has the WOT shift set. Not a lot of opportunities to safely find out lately...</p></blockquote><p></p>
[QUOTE="mikengail, post: 14161837, member: 143239"] I was told a couple of reasons for the first graph. One, the converter in the auto wasn't locking up properly throughout the run. The other, the ECM kept enriching the A/F at some rpm points overprotecting the factory cats. Justin solved it all in one update. As for the 6600 limit, my installer told me that the primary purpose of these runs was to zero in the tune for all around performance and daily driving reliability. No need to run it all the way up for that. An extra 300-400rpm wasn't going to tell him anything more about the validity of the tune. I was certainly good with it. I don't know to what rpm Justin has the WOT shift set. Not a lot of opportunities to safely find out lately... [/QUOTE]
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SVTPerformance's Chain of Restaurants
The Blower Bistro
Pure Stock 2012 5.0 VMP Stage-2 Results
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