1slow06SSS Posted August 12, 2011 Report Share Posted August 12, 2011 My truck was stock til 2 weeks ago. I did the k&n fipk. I replaced my muffler with 3" stainless tubing. 93 octane at all times. My baseline pull was 324rwhp/354rwtq corrected. Timing was at 21* and afr was 12.7-12.9.... seems pretty aggressive for a factory tune. Got the afr around 12.5 and 2* advanced. 333rwhp/364rwtq where the final numbers. This was done on a Mustang powerdyne dyno. Roller load was set to 5200lbs vehicle weight. Not sure if this is the correct forum to post in. Please move if needed. Quote Link to comment Share on other sites More sharing options...
chpspecial Posted August 12, 2011 Report Share Posted August 12, 2011 IF your WOT AFT was that high, the truck might have been tuned already.... Stock AFR is much richer than that.... Quote Link to comment Share on other sites More sharing options...
1slow06SSS Posted August 13, 2011 Author Report Share Posted August 13, 2011 Those AFR's where on the WOT pulls. Thanks for confirming my suspicions. What about the timing? 21* factory? Quote Link to comment Share on other sites More sharing options...
chpspecial Posted August 13, 2011 Report Share Posted August 13, 2011 That's a tuff question to answer. If you have the "stock" tune I can give you a better answer. Depending on the conditions it could be stock or not. sent from my thunderbolt Quote Link to comment Share on other sites More sharing options...
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