Quote:
Originally Posted by HULK_I6T
my zf has tagged the limiter but thats when its spinning tyres and the revs just fly upwards.. under traction it wont tag the limiter.
for quickest times in these cars you would short shift at 5000rpm anyway, they have ridiculous torque
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I've noticed from Dyno sheets of tuned or modified Turbos that they commonly seem to have lower than standard maximum power revs with a huge torque increase, so changing earlier might work.
I can't comment on when a BF XR6 Turbo should be changed, but my stock FG XR6 Turbo Auto does perform a touch better with max or practically max revs, which is demonstrated by my GPS data from WSID (shown below).
On run 1 the car was in Drive over the speed range that is shown (it was the run with slightly the best rolling acceleration) and I've compared it with run 4 when I deliberately ran it to the rev limiter (at 175.62 km/h) locked in 3rd gear. I did that to check how much pace the engine would lose over the last few revs.
Run 1................................................. .Run 4. Locked in 3rd gear
165 km/h..................0..........................0
170..........................0.63................. ...0.63 sec
175..........................1.37................. ....1.33
175.62 km/h on rev limiter in 3rd.............1.47
180..........................2.14
185..........................2.94
190..........................3.78 seconds
On run 1, it looks like the 3/4 gear change took place between 170 and 175 km/h or in about the last 170 revs, and the car lost 4 hundredths of a second over that 5 km/h increment
The performance when it was locked in 3rd only fell over in the last
0.62 of a km/h.