Hi,
unfortunately i have only a few good news and much more bad news, but one after the other:
1. Pictures (good)I have make some nice pictures (at least i like them)
2. intercooler pipe (good)I have changed the pipe between the turbo and the intercooler, because the closed hood compressed it to much with the old layout.
before:
after:
The pipe and the hose are from a BMW E39 530D, after i have used the 530D intercooler pipes and hoses in serveral cars, it seems that they can be used in every engine bay and every engine.
3. Boost Leackage (not very good)During the installation i have loose and retighting a clamp at the joint of the intake manifold and after that i could only achive 0.2 bar of boost pressure and a load whistle. The hose and the intale manifold do not fit optimal in reagrd of the angle and the diameter. As quick and dirty solution i have used a third clamp and after that, the whistle was gone (or better not detectable) and i could achive a max boost pressure of 1,25 bar.
4. Power (good) - Spooling (not good)As written earlier i have done some test drives with the g-tech and with the new data i think i can jude the power and the spooling behavior quite accurate. Power is quite good, but the spooling is really bad. Subjektive it did not feel that bad, which shows again that you have to measure to get knowledge, otherwise you stay unknowing and have to believe.
Here are the diagrams:
red / blue are the actual test data, with the twinscroll S2A and QSV and approximate 1,5 bar
green is the test data from 2012 with the old S2A and nearly 2,0 bar boostpressure (this was dynoed with 190 hp)
black ist the test data from 2013 with the big S2B and QSV and approximate 2,0 bar boost pressure. (no dyno, g-Tech suggest 200+x hp)
First power vs. engine speed in third gear
(the green is measured in second gear)
The green curve can not be judged regarding their shape, as this was not taken as a "real" power run and i have accelerate in a different manner. It can be ssen that the actual max. power is nearly identical with the 190 hp setup from 2012 (can also be seen in the later 1/4 mile measurements). It can also be seen, that the spooling is much worse than with the bigger S2B with QSV in 2013, which make no sense in my eyes. The spooling is nearly identical whith the spooling of the bigger S2B before the QSV was installed. Why - i dont know. As written above, my maximal achivable boost pressue was reduced to 1,25 bar at the last test drive, it could be that there was a boost leakage or the wastegate leaked, or both. During the last test run i disconnect the boost line to the wastegate, so this should stay fully closed, but could not increase the boost pressure anything above 1,25 bar.
Here are g-force vs. speed
The green line is also not valid before it is nearly identical with the blue line. It could also be seen the the g-force in third gear is also nearly identical to the 190 hp setup from 2012.
And at least power vs. speed (the lower blue curves are wheel- and accerlerate-power)
And hier the same diagrams for the 1/4 mile test runs (green curve was a second gear start)
The summary is, that the power is actual a bit below 190 hp, as i have measured in 2012, but with less torque and much worse spooling behavior.
At least here are one more diagram with a power curve in third gear with reduced boost pressure of 1,25 bar (the dotted line is curve from above with approximate 1,5 bar). According to the test data, the decrease in boost pressure means a reduction of 20 hp peak power, which is in line with the subjective feeling.