Hey guys... Finally made it to the DYNO this week for the new set up, so I have some preliminary results.
DYNO Graph below... Although I did change alot of parts on the car this round, here are the changes that would have benefitted power the most.
1. Went from a "standard" ported blower to a "
KONG X Ported blower". My initial feedback on this upgrade is AMAZING. Not only does the XPORT really help this little blower breath at higher RPMS, the car feels too much faster, as it has moved peak torque up just enough to actually help traction, not to mention all the extra sweet blower whine... I am super happy with this upgrade.
As you can see from the graph below.... the
GREEN line was my OLD combo, with the standard port + 2.4 upper and 9.2" lower.
When we swapped the blower, I kept the pulley combo the same just so I could see the before and after affect on boost curve / pressure. As you can see, it's pretty significant between the
GREEN and
BLACK lines.
What I found most interesting, is that the boost increase up top, that peaked around 3psi more made the car feel tremendously faster, whereas the big loss down low in boost had little to no effect on how fast the car feels. If anything, the car is easier to hook from a 2nd gear roll.
Although the pulley combo is still wimpy, it then added the 2.3" upper (which is about 4.5% more OD) as I was targeting 16psi for peak boost, and boy did that wake her up even more adding 1.5psi across the power band. That is the
BLUE line on the graph.
So that is where I left the pulley combo as we dialed in the car...
2. With a the
Katech Dual Drop In Low-side Fuel Pump in place, with access from this really cool
Back Seat Fuel Pump Access Hatch, we now have plenty of low-side pressure to play with and support more E.
3. While the blower was off, I ended up Installing a set of
XDI %50+ Injectors, and although I planned to Install a
Goliath HPFP, I ended up selling the one I had earmarked for my car to someone in need... so I decided to see how far we could push the OEM LT4 HPFP with E60 blend... which as you can imagine, is now my weak link in the fuel system.
So, Aside from a fresh set of
Brisk Silver Racing RR12S Spark Plugs, and some
DEI Chill Charger, the only other changes were...
Standard to KONG XPORT + 4.5% More Pulley + 10% More Ethanol.
Those combined netted me 60rwhp + 6rwtq for a new total of 838rwhp / 805rwtq.
My only reservation that day was the HEAT... as my last DYNO session was
68F and the new one was around 94F (I was bummed because this shop changed their hours and they no longer offer DYNO service until much later in the day, which I assumed would take a toll on power)
After looking at the log, although my MATS were still low, around 133F range, the lower quality air, did seem to lower my boost pressure about 1psi after 4,000rpm. I assume this was due to the poor air quality, and not belt slip, but I plan to data log again tomorrow in cooler air to confirm.
Also, if you were curious what the average MPG is for an 800+ rwhp car on E60 driving 75 miles (mostly cruising along with 3-4 4th gear pulls... averaged 14.6 MPG...
That said, the car feels much faster, but I assume It would have made more power if ambient temps were at 68F to match the last session vs. 94F??? What do you think???