Bruce Nunnally Posted September 10, 2005 Report Share Posted September 10, 2005 Ran a first baseline on my 2005 CTS 3.6L automatic with 5K+ miles on it here: http://www.caddyinfo.com/2005CTSaccel.htm Posted it to the car page, but repeating here for discussion. My goal since the temp is still up a bit was 6.5s 0-60. The 2005 CTS ran 0-60 in 6.86s and 6.9s. By comparison, my 2004 CTS did it in 6.4s. Lowest run for the 2004CTS was 6.21s with the K&N intake. Why did the 05 test slower? Could be normal car to car variation. 10F hotter today than on the 2004 test day; otherwise similar weather. Could be related to the fact that I run regular unleaded in the 2005, and ran premium unleaded in the 2004; only 196hp/.8 = 245hp showed up today. Have to think through the cost trade here at 15g/week x $0.30/gal diff between regular and premium =$4.50/week for premium ($234/year) seems worth it if it tests out higher with premium fuel. Have to retest next week with premium in the tank. 2004 CTS info for comparison: http://www.caddyinfo.com/ctsairbox.htm http://www.caddyinfo.com/ctsaccel.htm The 2005 lost 0.28s 0-20 mph, (1.76s vs 1.48s) which suggests some difference in lanch/traction. Unfortunately, my test location got repaved since our last test, with new asphalt instead of concrete. I'm getting a lot of wheelspin on launch now. Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
Scotty Posted September 10, 2005 Report Share Posted September 10, 2005 I am looking foward to seeing your results with premium gas. I feel that my Deville is a little sluggish and piggy as I have started using regular this week with the price of gas, maybe its my imagination... I had been using the middle grade for the last 2 years Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted September 16, 2005 Author Report Share Posted September 16, 2005 Ran premium fuel for 100 miles, then reran some acceleration numbers. With 93 octane, ran 0-60 in 6.68 secs, for an improvement of about 0.2 sec from the runs last week with 87 octane. Different days, so not a perfect test but seems persuasive to me. http://www.caddyinfo.com/2005CTSaccel.htm Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
Bruce Nunnally Posted September 16, 2005 Author Report Share Posted September 16, 2005 Hopefully not over-analyzing the same data, but here is a chart that compares the results of the 2004 on 93 octane, and 2005 on 87 and then 93 octane. It appears to me that you can clearly see the 87 octane run 'fall off' as it nears redline at 44 mph: Bruce 2023 Cadillac CT4-V Blackwing Follow me on: Twitter Instagram Youtube Link to comment Share on other sites More sharing options...
JasonA Posted September 16, 2005 Report Share Posted September 16, 2005 Bruce, excellent diagnostics! Jason(2001 STS, White Diamond) "When you turn your car on...does it return the favor?" Link to comment Share on other sites More sharing options...
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