RV6 downpipe test results (more and more coming slowly)

maddmatt02 · Jun 18, 2017

OK, so before and after the RV6 DP install I pulled a bunch of logs (actually one huge log before and one huge log after with a TON of data). I went WOT from roughly the same RPM in 4th 6 times, 3rd 6 times, and then in 2nd 6 times. 3rd and 4th I only pulled from 2k til I was spooled, 2nd gear was pretty much a 2500-5500 sweep. I have only created graphs from my 4th gear data so far and ended up eliminating some data because in some pulls I actually started at 2047, 1987, 2056, etc... so I am not graphing anything over rpm, I am graphing it over time. I used 60 cells out of the logs I exported as a .CSV and it came out to basically 2.47 seconds. Some varied but only .01x seconds so to simplify I just used the average of the times as my horizontal axis, so at any given point the data-point could be ~.01 left or right, but that is only .4% of the X axis on the chart so the shift wouldn't even be visible anyways. BEFORE anybody jumps all over me about it, I know the IAT wasn't consistent but I didn't think the ambient was that far off, and when I make the video Ill be able to see since I referenced it both times. also to keep the Y axis lower I divided the IAT data points by 2 on every graph besides the one the ONLY has IAT and this is just so you see the true difference which was about 18 degrees at the start of the pulls, and about 15 at the end of the pulls.

I really don't know how much of an effect 15-18 degrees IAT has, for about half the pull the higher temp had about 1 degree more timing and for the second half about 1 degree less...

all done on 92 pump, 21 psi starter will all of the drop downs as aggressive as possible but boost target dampening still enabled because its kind of annoying when disabled I think.

here's the 4th gear data. 3rd will be next, then 2nd (since it will take me the longest).

SPOOL OVER TIME:

4th GEAR AVG SPOOL

4TH GEAR STOCK

4TH GEAR RV6

AVERAGE SPOOL OVER TIME w/ AVG. IGN and AVG. K. CTRL

4TH GEAR SPOOL OVER TIME W/ AVG. IAT/2 AND AVG. VSS

4TH GEAR AVG IAT

4TH GEAR AVG ACCEL

2ND GEAR AVG. ACCEL W/ AVG IAT

maddmatt02 · Jun 18, 2017

I might do a couple of each in 4th with a similar IAT to see how far the results sway, if they remain fairly close I'll continue with the logs I have, if they don't I will try and redo all of it. I have a full tank of high octane right now I need to burn through to get back down to 92.

maddmatt02 · Jul 16, 2017

OK, so I finally got back to the same map, same octane fuel, knock control learned down and pulled data to compare and it seems that the IAT had ALMOST no effect on spool time. Here's the results comparing spool time, Ign., and acceleration over time in 4th gear. Since it shows that all my previous data still holds true even though the IAT varied, I am now going to continue graphing all the data from the first tests.