{"id":16640,"date":"2013-06-04T19:12:04","date_gmt":"2013-06-05T00:12:04","guid":{"rendered":"http:\/\/caddyinfo.com\/wordpress\/?p=16640"},"modified":"2013-06-04T19:16:11","modified_gmt":"2013-06-05T00:16:11","slug":"in-pursuit-of-max-torque-timing","status":"publish","type":"post","link":"http:\/\/www.caddyinfo.com\/wordpress\/in-pursuit-of-max-torque-timing\/","title":{"rendered":"In Pursuit of Max Torque Timing #Motorama"},"content":{"rendered":"

\"Northstar<\/a><\/p>\n

Each engine has a perfect timing advance across RPM that results in the maximum torque for that engine.\u00a0 GM tucks this info into a table that HPTuners refers to as Max Torque Timing vs RPM vs Cylinder Air — the theoretical timing that provides maximum torque for the engine.<\/p>\n

\"Max<\/a>

Max Torque Timing vs RPM vs Cylinder Air<\/p><\/div>\n

The advance at various RPM points in this table may not be achievable — there could be knock or detonation at those points at this advance.\u00a0 The PCM uses the table as a reference to determine delivered torque.\u00a0 This is one of the few tables that HPTuners recommends the user not change.<\/p>\n

\"Comparison<\/a>

Comparison of Actual Timing to Max Torque Timing<\/p><\/div>\n

This graph shows the actual timing during a 2nd gear run in green vs the theoretical max timing in the green dashed line.\u00a0 You can see that the actual timing follows along with the general shape of the maximum torque timing, although generally 0.5-2 degrees behind.<\/p>\n

Theoretically, if I add timing to move the actual timing toward the theoretical maximum torque timing — without detonating — the STS-V will make the most power.<\/p>\n

Now my STS-V also has an aftermarket intake, and an aftermarket exhaust.\u00a0 Those change the ‘equation’ a bit.\u00a0 But this is what I will be inching toward as an experiment — maximum torque timing.<\/p>\n

Feedback<\/h2>\n

What do you think?\u00a0 Have you used this table as a guide for tuning?\u00a0 Or are you with the “more advance is always better” school?<\/p>\n","protected":false},"excerpt":{"rendered":"

Each engine has a perfect timing advance across RPM that results in the maximum torque for that engine.\u00a0 GM tucks this info into a table that HPTuners refers to as Max Torque Timing vs RPM vs Cylinder Air — the … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[779,6,523,189],"tags":[],"class_list":["post-16640","post","type-post","status-publish","format-standard","hentry","category-hp-tuners","category-site-info-news","category-sts-v-cadillac-models","category-test-info"],"_links":{"self":[{"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/posts\/16640","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/comments?post=16640"}],"version-history":[{"count":16,"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/posts\/16640\/revisions"}],"predecessor-version":[{"id":16658,"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/posts\/16640\/revisions\/16658"}],"wp:attachment":[{"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/media?parent=16640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/categories?post=16640"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.caddyinfo.com\/wordpress\/wp-json\/wp\/v2\/tags?post=16640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}