Well what a weekend..... where do i start ...... finally got the car to the dyno, was pretty nervous not for the dyno process but for the amount of unknowns in this whole combo
Nice early start, had to be on the rollers at 9:30am, Claire wanted to come with me *insert love heart icon here* and as you can see was enjoying mummys cup of tea!
You actually cant tell from this picture that the wheel is in the guard about 4 inchs!
Pulled up at the dyno, good opportunity with the sun on the right side.
So did a heap of steady state tuning to get the part throttle stuff half ok, then started moving to some ramp runs, the plan was run it up with the wastegate pressure of ~14psi and then if all was good start adding some duty cycle to the boost controller, so i could get an idea of what DC% did what boost wise and slowly work up to about 20-25psi.
First ramp run it boosts to 237kpa and spat me over the front wheel chocks
so after that we strapped the front wheels down, and looked at the logs, was definitely 19psi straight up at 40% throttle!
i then did a few more partial load runs to see what was going on, tried making the flex table for the boost controller all 0% and then 100% to see if it was just backwards and it just didn't change anything, so i ended up just removing the boost controller and running a vacuum line to the under side of the wastegate so i could at least get gate pressure and leave it at that.
This was one of the earlier power runs, approx. 13psi on the waste gate - unfortunately i was there by myself so wasn't able to get any videos from outside the car.
[youtube]
https://www.youtube.com/watch?v=FgSEMd5l4xE[/youtube]
The logs were showing me that at around 6800rpm the boost was starting to increase still, so first run it made 330hp, i then added two degrees of timing to the boost spark table, power went up to 340hp, i added another two degrees and it went up to 350hp
So i did a bit more fiddling to try and see if there was any reason why the boost was increasing but couldn't work anything out, i also hadn't seen the shift light come on, so i pushed it to shift light rpm (7700) and to my surprise it boosted to 22psi and made the 399hp
So all in all a good day, with no major show stoppers. Few small things to work out, and i have a feeeling my wastegate might be too small, so i am going to try a bit of lathe reaming and die grinding to see if i can get it a few mm larger, then when i go to gunnedah i can see if its still an issue, and worst case if it is i can just limit rpm to stop it, or use it to my advantage if i am not winning lol!
As it sits its making just a bit less on wastegate pressure than the Gemini did, but its a bit heavier, so it will probably do a low 7 over the 1/8th and then my hope is i can work out the boost controller issue so i can also have that to play with at to get it to 6.9 or similar.
