0 to 60 Acceleration on 2007 RE300 bus with DT466

[Power Hungry]

Good afternoon, folks!

We recently did some acceleration tests on our new Skoolie bus, just to see where things are at and what we could accomplish with tuning. During our testing, we came to realize that our turbo actuator was bad, which resulted in extremely invalid tests due to the fact that the bus could barely make any boost. Bummer... Time to order a new turbo actuator and then wait.

Well, the new turbo actuator came in today and I was like a kid on Christmas day. :biggrin: Immediately hopped on the bike and rode home with box in hand (well, backpack anyway) to get the actuator installed. All I can say is... Holy crap!

After fixing turbo, we went back in and redid the tests. The numbers we generated previously are obviously way out of line, even though they did show a noticeable gain with tuning. However, the new numbers are even more impressive. Overall time gains between stock and tuned are pretty similar, but there is a sizable improvement between stock with weak turbo and tuned with working turbo!

Here are the test numbers for your perusal. By the way, these come right from the 1708 communications, so I have resolution down to 0.2 seconds.

Stock (225 HP Factory Calibration)

00 - 0.0
10 - 3.2
15 - 4.4
20 - 6.0
25 - 8.0
30 - 10.0
35 - 12.4
40 - 14.8
45 - 17.6
50 - 21.2
55 - 26.8
60 - 36.6
65 - 42.0
70 - 49.0

Custom (250 HP Modified Calibration)

00 - 00.0 - ( +00.0 )
10 - 02.4 - ( +00.8 )
15 - 03.4 - ( +01.0 )
20 - 04.4 - ( +01.6 )
25 - 05.8 - ( +02.2 )
30 - 07.2 - ( +02.8 )
35 - 09.0 - ( +03.4 )
40 - 11.0 - ( +03.8 )
45 - 13.0 - ( +04.6 )
50 - 15.6 - ( +05.6 )
55 - 18.4 - ( +08.4 )
60 - 22.2 - ( +14.4 )
65 - 27.2 - ( +14.8 )
70 - 34.0 - ( +15.0 )
75 - 39.2 - ( -N/A- )


Tests were executed on the same stretch of road, under the same conditions, about 10 minutes apart. What's hysterical is that stock with a bad turbo had a 0 to 70 time of 57.0 seconds, stock with a good turbo was 49.0 seconds, and tuned Level 4 was 34.0 seconds. That is a 25 second difference between what the bus could do when I bought it and what it can now do with it fixed and tuned! Needless to say, I'm thrilled! Now to go through the datalogs and see if there are any shortcomings or possibly any room for improvement. We'll see what we have.

Anyway, these are the numbers. Enjoy!