I really didn't realise just how tricky, what I thought was a small change could be. We got the car onto the rollers around 10am to get the initial set up done, and then made it out onto the road around 1130.
It was interesting to see a technique called boost checking being used. This involves left foot braking enough to hold the cars acceleration while still accelerating to build the boost. I didn't try it as my left foot braking leaves a lot to be desired!The mapping took the rest of the day and night as we were suffering from over boost quite regularly.
Very small changes seemed to make massive differences. My target boost was 1.6bar and I think we've got it (I'm so tired I can't really remember). We ended up calling it a day at just before 11pm due to a blowing manifold and my need to drive 3 hrs home. The car running well and pulling well, just a little noisey from the manifold which I guess is now the next thing on the to-do list. I've never seen my manifold and turbo glow before, but there was nearly no end to it yesterday!! Got a few pics that I'll post up later.
I think the main thing I was surprised with is my increased confidence in the engine.
I built it myself and with it being my first attempt at such a thing I occasionally suffer from a little doubt to its abilities. But I'm quite frankly amazed that it took it all in its stride. A 400 mile round trip plus the 40 something outings to try the boost levels. Each of these was 3 or 4 hard pulls through 1st/2nd/3rd/4th gears. We got through over 1 tank of BP Ultimate doing this alone!I'm pretty pleased to have the car running well again and at more than actuator pressure.
This yeah I WILL make it to Santa Pod to finally see what my car can do since the project started in Jan 2005.
to say it comes on strong is an understatement!! Dyno graph could look completley different to the last one.