![\"TUTD](\"http:\/\/caddyinfo.com\/wordpress\/wp-content\/uploads\/2013\/06\/TUTD-2013-06-21-exhaust-cam-test.jpg\")
<\/a><\/p>\nThis chart shows exhaust cam position for the VVT timing.\u00a0 The cells in red are our test settings — adding 1 degree of retard at 4800 rpm, and 2 degrees of retard from 5200-6800.\u00a0 What we hope to see is a change in the slope of the HP and Torque curves as a result.<\/p>\n
This chart shows today’s hotter run vs previous cooler run.\u00a0\u00a0 I am not focused on the absolute values so much as the slopes for today’s study.\u00a0 Here is a zoom in from 5800-6600:<\/p>\n What this appears to show is that the change in the exhaust cam timing didn’t cause a huge improvement or loss in power and torque at 4800-6800.\u00a0 However, the slow of the blue torque curves appears to suggest that the addition is overall not an improvement, since the current curve decreases over time in this range at a faster rate than the previous.<\/p>\n The TUTD shift point did work correctly for this test, so that change will help with future testing.<\/p>\n Next I will restore the exhaust cam VVT timing, and test an adjustment of the intake cam vvt timing.<\/p>\n","protected":false},"excerpt":{"rendered":" Today’s test was not a normal test.\u00a0 First, I was dispatched for a breakfast run to Starbucks, which adds intercooler heat.\u00a0 Second, the highway was jam packed with some problem, and the run was captured in an alternate location.\u00a0 All … Continue reading <\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n