VelocityAP Jaguar F-Type ECU Tuning, V6, V6S, V8S, V8R
#1341
Yes, the bypass mapping has changed over the years, but no relation to K309.
The new facelift F-Type's, they have electric bypass valves and can be manipulated without engine vacuum. So, JLR can keep them open or closed at any rpm via a duty cycle. The "loud" bypass mapping will hold valves open at idle to make it sound aggressive, then close the valves a all the way OR a partial amount, till the higher rpm's which the valves need to open to release excesses backpressure
Nonetheless, we have the ability to change all that. For example, the loud mapping or any others can be set to stay open 100% of the time...etc.
The new facelift F-Type's, they have electric bypass valves and can be manipulated without engine vacuum. So, JLR can keep them open or closed at any rpm via a duty cycle. The "loud" bypass mapping will hold valves open at idle to make it sound aggressive, then close the valves a all the way OR a partial amount, till the higher rpm's which the valves need to open to release excesses backpressure
Nonetheless, we have the ability to change all that. For example, the loud mapping or any others can be set to stay open 100% of the time...etc.
Just to be clear, electric bypass is 2021+ and you can change the behavior with vacuum systems too, right?
And is there are any problems with GPF or is it only acting a bit like a muffler?
#1342
Yes, I can change the behavior of the earlier models equipped with vacuum valves, but those are open anyways when the loud button is active so it's really pointless. Also, if it's not open (normal mode..etc), the driver can simply pull the fuse operating these vacuum valves which forces them open 100% of the time. For those reasons, we don't edit the valves in the mapping for the vacuum equipped vehicles, leaving the driver the adjustability to suit ones personal desired exhaust note..
The late pre-facelift F-Type GPF's had zero programming into the engine ecu, they were equipped and not monitored, as the facelift models came about, the GPF became monitored and required disabling inside the ecu to be removed/deleted.
__________________
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
The following 2 users liked this post by Tuning@VelocityAP:
J444G (08-01-2024),
TheDrainPlug (08-09-2024)
#1343
If you can change this behavior - active exhaust on = open valves like the original, I am sure you would have quite a few customers here. Many people don't want to lose the ability to close the valve and don"t want the fuse out.
#1344
I have double-checked with the UK guys and it seems like a fact that some update (at least in Europe) makes valve closed even in dynamic + loud button active under cca 3,5k rpm (thats the reason why pulling the fuse) - I am talking about vacuum system cars.
If you can change this behavior - active exhaust on = open valves like the original, I am sure you would have quite a few customers here. Many people don't want to lose the ability to close the valve and don"t want the fuse out.
If you can change this behavior - active exhaust on = open valves like the original, I am sure you would have quite a few customers here. Many people don't want to lose the ability to close the valve and don"t want the fuse out.
__________________
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
#1345
Also I am at the pointy end of deciding whether to go ahead with a CAI. After reading the many, many posts on it, I am inclined to go with the carbon upper pipes which means Paramount at the moment. Is there a VAP product coming out any time soon?
#1346
I have double-checked with the UK guys and it seems like a fact that some update (at least in Europe) makes valve closed even in dynamic + loud button active under cca 3,5k rpm (thats the reason why pulling the fuse) - I am talking about vacuum system cars.
If you can change this behavior - active exhaust on = open valves like the original, I am sure you would have quite a few customers here. Many people don't want to lose the ability to close the valve and don"t want the fuse out.
If you can change this behavior - active exhaust on = open valves like the original, I am sure you would have quite a few customers here. Many people don't want to lose the ability to close the valve and don"t want the fuse out.
I’ve seen all the K309 updates.
When I tell you, the K309 update only affects the fuel on overrun delay, I’m not comparing it to how my ears and butt Dyno interpret leaving a dealer after an update..
I’m stating only facts that I see in the actual bin file pre vs post K309 updates. But, you are free to take the option of some UK guys.
FYI; Our file submission page allows for someone to request the bypass change to suit as desired preference.
__________________
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
#1347
I deal with files world wide, I edit files all day for a living.
I’ve seen all the K309 updates.
When I tell you, the K309 update only affects the fuel on overrun delay, I’m not comparing it to how my ears and butt Dyno interpret leaving a dealer after an update..
I’m stating only facts that I see in the actual bin file pre vs post K309 updates. But, you are free to take the option of some UK guys.
FYI; Our file submission page allows for someone to request the bypass change to suit as desired preference.
I’ve seen all the K309 updates.
When I tell you, the K309 update only affects the fuel on overrun delay, I’m not comparing it to how my ears and butt Dyno interpret leaving a dealer after an update..
I’m stating only facts that I see in the actual bin file pre vs post K309 updates. But, you are free to take the option of some UK guys.
FYI; Our file submission page allows for someone to request the bypass change to suit as desired preference.
#1348
Can you do this software exhaust modification in the 2023 F-pace SVR? Also Is it possible to get valves opened 100% only if you push exhaust or dyunamic button?
#1349
Yes, we have our own SVR and have modified the software so the valves are 100% open all the time when the exhaust button is pushed.
__________________
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
The following users liked this post:
J444G (08-05-2024)
#1350
Hi Stuart, can I interrupt for a moment. I have the VAP pulley and tune and the touring exhaust on my V6S. All was fantastic until I had Jag service it last year and they have murdered the engine note which is now whoofy in normal mode, like an old dog's fart. Dynamic is still fine but it is a bit over the top for normal driving. Jag say they didnt do anything but the tune and exhaust have been checked and they are working perfectly. I asked my performance mechanics if we could go back on the ECU and they thought you could end up with a major disaster if we tried. Is there anything that can be done from your end?
Also I am at the pointy end of deciding whether to go ahead with a CAI. After reading the many, many posts on it, I am inclined to go with the carbon upper pipes which means Paramount at the moment. Is there a VAP product coming out any time soon?
Also I am at the pointy end of deciding whether to go ahead with a CAI. After reading the many, many posts on it, I am inclined to go with the carbon upper pipes which means Paramount at the moment. Is there a VAP product coming out any time soon?
If your tune is still on the car, it's also not possible that they updated the ECU.
__________________
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
The following users liked this post:
BruceTheQuail (08-05-2024)
#1351
Thank you Stuart. Only one question about. In confort mode, without any software modification, (meaning exhaust or dynamic button disabled), if you pass 4000 rpm exhaust valves should open 100%, am I right?
Last edited by spegor; 08-05-2024 at 10:48 AM.
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)