Mythbuster: continuing project thread of my 1303 '75

[Wally]

All parts in da house and making it all fit went well (I'am getting almost a routine in this ):



Went for a first test drive today
Needed to set-up the EBC again and by accident selected the wrong button...which led the boost rise to 30 psi before I backed off...
Fortunately all corrections and setting were entered up to 2 bar boost and the engine suffered no harm apparently. I did get launched pretty well though
Spool-up is indeed a lot slower as expected: I measured about +800rpm in the log before 15 psi was reached. I also must confess I checked the headers I welded and saw about 4 or 5 small leaks... so maybe spool will improve some when I have solved the leaks. Initial boost threshold seems a lot less slow and impressions are only about +500rpm for boost threshold.
I would have expected about +1000 rpm considering the size of the new turbo and all the extra volume in piping, so I am actually still vary happy already with spool as it is

Outside temp today was very cold: around freezing point: 0 Celcius. Intake air temperature was only 4 Celcius under boost. Air-air intercooler FTW

The most important benefit I saw from this turbo is that EGT was much lower throughout the whole rpm range, even when cruising! I had a lot to keep an eye on today, but if I had to make a guesstimate, 50 Celcius lower at least, maybe even 70-80 Celcius, but will have to investigate that when I have driven more.

I also have anothe HKS (SSQV) BOV installed and that seems to work well too. Seems to keep the flow more constant after it opens, but hard to tell exactly what/how it works different. We'll see.

Made a little vid in the hope to capture the Borg whistle, but I don't think I can hear it destinctly enough from the inside.

http://www.youtube.com/watch?v=f4iuImkFo0I