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after 1 week of some hard driving and normal, I have noted that my fuel consumption is hovering in the early to mid 9s.
Given that VW quote early 10s, this is defintely an improvement. How did APR manage to simultaneously up the boost (circa 16 psi) but also improve fuel economy? I have read that APR claim this should be the case in any event, but still pretty amazing that you get the best of both worlds. What else does the stage 1 engine remap change (other than boost and fuel pressure from what I was told)
Current ride: 2014 Range Rover Evoque 5 Door TD4 Pure | 9 Spd Auto | Fuji White | Black Leather | 19 inch 'Dynamic' Wheels
Previous rides: MY11.5 Golf GTI 5 door | DSG | Candy White | 18' Detriots | Bluetooth | K&N Air Filter | Dancing Dials (Oh Yeah!)
| 1989 Porsche 944S2 Coupe| Guards Red| Leather| Sunroof| LSD
I thought VW quote better than low 10's... but anyway the crucial change that tuners make is the ignition timing.
Also, allowing more boost down low can improve efficiency by reducing frictional losses in the engine; ie. using a lower rpm with more boost to generate the same power as higher rpm at lower boost.
You have to also realize that having more boost available doesn't mean you are always using boost; if you drove the car hard all day every day, every aftermarket tune will result in worse fuel economy as more boost = more air = more fuel. But during standard day to day driving, the aforementioned changes improve fuel efficiency.
after 1 week of some hard driving and normal, I have noted that my fuel consumption is hovering in the early to mid 9s.
Given that VW quote early 10s, this is defintely an improvement. How did APR manage to simultaneously up the boost (circa 16 psi) but also improve fuel economy? I have read that APR claim this should be the case in any event, but still pretty amazing that you get the best of both worlds. What else does the stage 1 engine remap change (other than boost and fuel pressure from what I was told)
City driving figures are always the hardest to quantify, but we would normally expect to see a gain as you have.
Honestly, there are hundreds of interlocked tables that are modified - that's one advantage of using a tuner that can write / rewrite the entire ECU - where the others that can not access the full ECU get mixed results.
City driving figures are always the hardest to quantify, but we would normally expect to see a gain as you have.
Honestly, there are hundreds of interlocked tables that are modified - that's one advantage of using a tuner that can write / rewrite the entire ECU - where the others that can not access the full ECU get mixed results.
Glad it going well!
sure is Guy!
by your logic, i guess that is why you pay for the apr product as they have unlocked all the ecu and maximise the potential. who knows? the accountant in me says that the extra fuel saving may somewhat offset the cost in the flash tune so that is a good thing!
i drove a stock mkv pirelli yesterday and that felt slow now compared with my apr powered mkvi!
Current ride: 2014 Range Rover Evoque 5 Door TD4 Pure | 9 Spd Auto | Fuji White | Black Leather | 19 inch 'Dynamic' Wheels
Previous rides: MY11.5 Golf GTI 5 door | DSG | Candy White | 18' Detriots | Bluetooth | K&N Air Filter | Dancing Dials (Oh Yeah!)
| 1989 Porsche 944S2 Coupe| Guards Red| Leather| Sunroof| LSD
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