{"id":17553,"date":"2015-08-28T15:30:42","date_gmt":"2015-08-28T20:30:42","guid":{"rendered":"http:\/\/caddyinfo.com\/wordpress\/?p=17553"},"modified":"2015-08-28T15:55:51","modified_gmt":"2015-08-28T20:55:51","slug":"cadillac-xlr-virtual-dyno-testing-2015-08-28-motorama","status":"publish","type":"post","link":"http:\/\/www.caddyinfo.com\/wordpress\/cadillac-xlr-virtual-dyno-testing-2015-08-28-motorama\/","title":{"rendered":"Cadillac XLR Virtual Dyno Testing 2015-08-28 #Motorama"},"content":{"rendered":"

I have been testing my 2007 Cadillac XLR with the LH2 4.6L DOHC V8 engine to establish a baseline prior to any mods or tuning.<\/p>\n

Today the air was a bit cooler, although not as much as I had hoped.\u00a0 HPTuners VCM Scanner recorded a 97F intake air temp, and 29.83 barometer during the test.\u00a0 For safety, testing is done in 2nd gear which is not optimal — it should be done in a 1:1 ratio or as close as possible.\u00a0 I am using Virtual Dyno to convert captured export data from hptuners to a on-road dyno result.<\/p>\n

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

[click to zoom in, back to return]<\/p>\n

The red and blue runs are both from today, and run within 6 minutes of one another on our 2-test area cycle.\u00a0 I was hoping to see a bit more whp in the cooler air, but I suppose 97F not all that cooler than 104F from the prior tests.<\/p>\n

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

This second chart shows today’s 2 runs in yellow and green vs prior runs in red and blue.\u00a0 Corrected for temp and gas, the results seem fairly consistent at least.<\/p>\n

All runs are using current method, which is drive to a known point with transmission manually selected to 2nd gear, then wide open throttle until fuel stop at redline.\u00a0 Rinse, repeat.<\/p>\n