F-Type ( X152 ) 2014 - Onwards
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VelocityAP ZF8HP70 Transmission Tuning (TCU)

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  #201  
Old 01-06-2024, 05:41 PM
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Originally Posted by Therock88
Hi,

Pully installed in 2020. About 7,500 miles on it with many other mods/upgrades. No issues at all. Tune and pulley are by far biggest impact of anything you can do for performance/speed.

I honestly do not check the gas mileage. Did not buy a SC V-8 and add all the mods and Water/Methanol etc. for gas mileage It seems to get much better mileage than my Ford Raptor that holds 36 gallons!...Plus I do not drive it much.
It does not appear to have had much if any effect that I can tell though (again, I do not monitor the gas mileage).
@Therock88
Hi there,
I appreciate your response. The ECU Flash Tune with VAP is 415hp and 355/tq. The Pulley Tune is 450hp and 440tq. The extra 35hp add is deff a nice push that you will feel. What I want to know is the extra 85tq. That is a huge increase in torque. Where did you see the biggest value? What did the car feel like between 2000 and 5000 RPM? How did the car respond when you are in D and driving normal (sub 2500 rpm) and then hit the throttle. Is it a better downshift? Is it much wheel-spin? Does the car still lag or is the lag gone? The biggest reason that I did the ECU Flash Tune was because of the lag. The ECU Flash Tune took away 70% of the lag. Thank you so much for your time.
My kindest regards,
-XJ
 
  #202  
Old 01-06-2024, 06:52 PM
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The Rock has a V8, you have a V6…
 
  #203  
Old 01-07-2024, 01:08 PM
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Originally Posted by Jaguar XJ
@Therock88
Hi there,
I appreciate your response. The ECU Flash Tune with VAP is 415hp and 355/tq. The Pulley Tune is 450hp and 440tq. The extra 35hp add is deff a nice push that you will feel. What I want to know is the extra 85tq. That is a huge increase in torque. Where did you see the biggest value? What did the car feel like between 2000 and 5000 RPM? How did the car respond when you are in D and driving normal (sub 2500 rpm) and then hit the throttle. Is it a better downshift? Is it much wheel-spin? Does the car still lag or is the lag gone? The biggest reason that I did the ECU Flash Tune was because of the lag. The ECU Flash Tune took away 70% of the lag. Thank you so much for your time.
My kindest regards,
-XJ
As I mentioned in an earlier post, the shift points seem to match up better to the rpms. You get a couple hundred RPM bump over redline also. You DO notice the TCU tune, but it is not nearly as drastic as the ECU & pulleys. I would say you feel a marginal increase in shift speed and "crispness" of shifting. These are still automatic transmissions, so you still have fluid in a torque converter that you will sense...But these shift nearly as quickly as PDKs.
 

Last edited by Therock88; 01-07-2024 at 10:51 PM.
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