let's keep it civil,


personal attacks won't be tolerated


commercial links/soliciting business is for sponsors. If anyone wishes to be a sponsor, the mods or admin can put them in touch with the right people.

 

where were the personal attacks? Did I miss that post?

 

I think that thread has been deleted...

 

No only is it a trap, but it will prevent your vehicle electronics from going to sleep and your battery will run down. There's an issue (a defect, in my opinion) where the battery module needs to be reset after connecting a device to the OBD port.

 

My experience on the V6S was that the incremental power increase from a tune to pulley&tune felt far greater than going from OEM to the tune alone. Even though the incremental hp increases are the same, the pulley offers a bigger bump in torque.


As lizzardo has mentioned, plugging the logger into the OBD port might keep the car awake and prevent you from parking for a day or two without draining the battery.

 

I fell victim of the OBDII plug battery drain. I discussed the issue with an engineer at JLR corporate and was informed that if I plugged in anything that is self powered, there would be no issue. I tried it and indeed it was true. Most scanners use the OBDII port for power too. I used a Bluetooth dongle with Torque and that clearly resulted in battery drain.

When you visit the dealership, their devices use an AC adapter, the emissions machines also connect to the OBDII port but are self powered and there is no issue.

To further this, I got into a major pickle with BMW when I "coded" my car (enabled features etc) and I was told that somewhere on the manual, it says that it's reserved for the exclusive use of BMW service centers (as I recall, they are there for any service provider not just them, obviously the state would violate that with emission testing...). One service advisor at Jaguar used the same BS.

What I can guess is that there must be some handshake between any connected OBDII device and some sort of command to "log out" needed to cut off the power.

 

Generally, the IP has been Ford's, but the line gets blended around the JLR/Aston ownership dates.
Manufacturing of the engine itself for the V6 variants and higher I believe were retained by Jaguar nameplated facilities.

 

Agree with this. I had the tune alone for a bit, perhaps a couple weeks before I put the pulley on. The tune was great, however the pulley is where the punch is. I did this at around 10K, couldn't wait for the warranty to expire.

 

I’ve been following the threads on this subject and am confused as to why Jaguar didn’t actually do this themselves. Surely it would be at no cost and would give a more powerful car?
Is it that the suspension and brakes etc would also need to be beefed up, or the engine isn’t really up to it?
Sorry if this is a dumb post, I’m just curious.
Should add that I’ll be keeping my car as stock but intrigued at the upgrades.
Please be gentle with any replies

 

One thing to bear in mind is that engine & drivetrain is usually one of the largest development costs for a vehicle manufacturer. Their investment needs to be spread across multiple model years & updates and to allow for newer models with more power drip-fed into the product line to continue to drive sales.

Hence why you have a 340BHP base, 380BHP and then 400BHP variants of the V6. The pulley size may be next, although there are other considerations.

Manufacturers have to take into account all sorts of restrictions & regulations like emissions, varying fuel quality all over the world and risk profile across their entire product line.

If you're interested in some upgrades, we have a Distributor for our products in the UK, David Appleby Engineering. They are also an AMR Race Team and soon to be FType Gt4!

 

Stuart thank you for your reply. I get the reason for the variants but it seems like such a simple mod.
I’ve no wish to put you out of business! Yes I am aware of the UK link but I enjoy the car just as it is although if your mod had been available at manufacture I’d have liked that.
I wish you continued success with the guys on here. Steve.

 

Just as Stuart said, planned obsolescence. It encourages people who aren't as educated or willing to modify to sell their 14, 15, 16 model year and buy a new car when a more powerful 17, 18, 19 model year variant comes out.

My company does this all the time with horsepower/torque. Its basically standard operating procedure.

 

I'm not sure that planned obsolescence is the whole story. When Porsche came out with the Cayman they deliberately did not make a variant with the most powerful engine. The 911 is the flagship and needs to maintain its place. If the V6 were too close in price and performance to the V8, fewer would cough up the extra for the V8.

 

Obviously model to model and engine to engine is a different story, but regarding an individual engine this is absolutely a thing. Granted Jaguar has gone engine crazy with this platform of late, so its getting more and more difficult to overlap; but they've shown plenty of evidence of planned obsolescence over the last few years; 495PS -> 550PS -> 575PS... don't be surprised if you see a 600PS before the generation is up.

 

Hey can you please tell me how fuel injectors are monitored or what parameters are determined to see if we need injector upgrades? I am thinking about getting the bigger injectors from the Rs, thanks Stohlen

Also, OT did you end up getting a carbon fiber driveshaft? I've been trying to get one made for years

 

With 20 psi boost, the V6 is still not running lean, so bigger injectors will be of no benefit.

 

I was never planning to. They are quite expensive, but it is an option if you're dedicated enough to the platform.

 

 

I'm sure the interest is out there; but keep in mind the AWD and RWD variants have different driveshaft lengths, with the AWDs having 2 of them.

 

[QUOTE=NigelW;1820155]Did I read somewhere that the AJ126 engine was/is designed and/or built by Ford?
QUOTE]

The engines were designed/engineered by Jaguar but built in the Ford engine plant.