powdrhound

Thanks! The 1000 file could be used but it was mainly done just to see the 1000# on the dyno. I don't really want to run anything over 700 wtq for obvious reasons. We have the following 3 maps that are the go to maps for most operation with the middle 1.0bar map being the default:

0.9 bar: 768whp / 567 wtq
1.0 bar: 833whp / 618 wtq
1.1 bar: 912whp / 663 wtq

We are down to getting the aero sorted and mounted up so it's getting close. The tuning process which included over 150 dyno pulls is done and the engine is track ready. Cheers!

2fcknfst

So do the partial throttle maps overlap each other in that configuration, or do you still have to select a specific map?

powdrhound

It's a single tune. The graph just shows the part throttle dyno pulls within the same tune. Sort of like looking at layers of a single cake...

2fcknfst

Essentially, we are optimizing the whole throttle range within a single tune, not just the very top.

Does that mean those changes can be incorporated on every map? I'm just trying to get my mind around how you implement this.

That's interesting, so you simulated road driving on the dyno?

The closest I ever did to that was run a diesel for a couple of hours straight so we could nail the long term fuel trim at sixty, seventy mph.

powdrhound

Just got some pics from the shop on the progress of the new 3.5" Y-pipe which was drawn up in CAD last week. It's getting mocked up to make sure it's a direct bolt in and fit with the OEM airbox. This particular version is going to have a single larger Tial diverter valve in the center of the collector ahead of the throttle body in place of the dual OEM valves / F-hose. This will greatly open up the area on the left side the engine. The single diverter will recirculate into the intake manifold just like OEM. We anticipate this larger Y-pipe with significantly open up flow in the intake side.

2fcknfst

That's some nice work; are you expecting power gains with it, or just cooling gains?

powdrhound

We expect about 30-40whp gains, or alternatively same power own less boost.

2fcknfst

That's some good efficiency, looks the part too.

T10Chris

Was very cool to finally see this car in person last week and check out the CAD files for some of the upcoming stuff! Top notch work going on over there and a great group of people. That y-pipe went from CAD to physical prototype in a matter of days!!

2fcknfst

The beauty of CAD...

powdrhound

Great seeing you last week Chris! This is going to be another killer Motec 4.0L build for sure...

diverdog

A shining example that shows efficient flow is the key to power, not boost pressure. The extended torque curve is atypical and super impressive. Great work on the variocam. Nice to see Xona providing a compressor map. It's eye opening to have all the measured parameters so you can do an accurate plot. When I did my original turbo engineering the assumptions on efficiency were off quite a bit resulting it inefficient compressor operation. The actual data including the turbo speed clearly showed the error. A bigger compressor resulted in a cooler running and more efficient engine.

powdrhound

Just like all engines, these Mezgers are an air pump, but highly inefficient in it's stock form. It's really amazing the amount of efficiency that can be unlocked with the right hardware and precise tuning. I think when it's all said and done with, 900whp can be had at 0.8 bar.

2fcknfst

That is absolutely correct - the more efficiently you get air/fuel in, then out, the better the volumetric efficiency is.

It would be interesting if you could ever hook it up to a smog machine and see how clean it really is.

wkf94025

At what ballpark cost?