Ummm, think I broke the 962, ooops.
In my quest to try and catch up on missed 3 1/2 years, thought I'd kill 2 birds with one stone and venture into the world of aero and take my recently acquired Nissan R92 out for it's maiden voyage (just got it a few days before, not driven it).
Started as a test drive, ended up as a bit of a durability test for aero physics / setups for gt7, but all good, so, thought I'd do the same thing to (at the time) the only other car I could compare it to, which was the Porsche 962. Buuuuuut, didn't go quite so well.
Porsche 962 stock (power restrictor & ECU output @ 100%):
PP / Power / Aero FR RR / Tyres
855.07 / 690 / 750 1500 / Soft
845.47 / 690 / 750 1500 / Medium
835.36 / 690 / 750 1500 / Hard
Aero change to Min FR:
PP / Power / Aero FR RR / Tyres
825.32 / 690 / 500 1500 / Soft
814.91 / 690 / 500 1500 / Medium
803.98 / 690 / 500 1500 / Hard
Now changing the ECU output, noted below as EC% first then PP then Power:
HARD tyres:
100% 803.96pp 690(bhp)
99% 802.52 683
98% 775.78 678
97% 774.25 689
96% 773.08 662
95% 772.17 655
90% 764.87 621
80% 750.29 552
70% 733.68 483
MEDIUM tyres:
100% 814.91 690
99% 813.69 683
98% 812.32 676
97% 810.69 669
96% 809.42 682
95% 807.98 655
94% 780.63 648
93% 779.08 642
90% 774.42 621
80% 759.79 552
70% 743.52 483
SOFT tyres:
100% 825.32 690
95% 818.11 655
94% 816.71 648
91% 812.24 628
90% 784.01 621
89% 782.52 614
88% 781.23 607
80% 768.87 552
70% 753.10 483
But, if you reduce the PP using the power restrictor (with SOFT tyres), stock engine, aero MIN Fr MAX Rr:
100% 825.32 690
95% 819.45 655
90% 813.66 621
85% 806.94 586
80% 800.08 552
75% 792.95 517
70% 784.92 483
Soooo, we're done ummm, not quite. Put a turbo kit on, HARD tyres, 100% EC and Power restrictor, then start reducing power with ECU:
100% 844.78 987
95% 810.62 937
89% 803.86 878
88% 830.44 868
85% 827.75 839
80% 822.34 789
At some point I noticed my vodka bottle had lost half it's contents, so tried to take note of the numbers before eyeballs stopped pointing in same direction as each other, not sure if succeeded or not. This might explain why there could be a numerical error or two (in typing this up) as it looks as though I did a durability test on Smirnoff, alongside aero in GT7.
For those wondering what I'm talking about, look at the highlighted figures above. In some situations a 1% reduction in ECU power can result in a 25+ PP points reduction (way more than what it should), but in the last example, doing a 1% reduction adds 25+ pp points.
Hard to tell which way round the PP is right, I tuned a few Group Cs for 800pp (not a very scientific test as it was at CGV - I needed practice as was doing a race there). But 'using' the PP gained from reducing ECU with stock engine for better tyres (Soft front and Med rear), didn't result in the fantasy car I thought it would - as running min aero on Fr and max aero on RR does tend to make car understeer a bit (understatement).
So, in theory, using those PP points 'gained' and putting softs on front and meds on rear (which is all you can do to keep it under 800pp) should compensate for the aero induced understeer, but although it helped alot, it didn't make the car a huge amount faster than the other Groups Cs. Although the other cars had a custom suspension (only) to compensate for the crazy aero settings and the 962 was stock suspension, diff and gears. All had min FR aero and max RR aero...
If you made it this far, and understood what happened, fair play to you.....
EDIT:
Forgot to say, did go through some random cars from garage with high aero like F3500, later SuperGT cars, GR1 cars etc and did a very quick check (in settings only, not on track) to see if running them completely stock, but with min fr aero / max rr aero and then reducing ECU output 1% at a time, but no car did anything 'wrong'.
But that was a quick test, and not as comprehensive as the 962. So it seems as though this looks like a 962 PP issue, rather than some kind of general min / max aero setting that applies to more cars.
Although, you can use this to 'cheat' a few pp points, but then you have to tune out the understeer, which can be done in a number a ways. But, got no idea if this makes the car 'faster' or if there's other benefits i.e. tyre wear.
