Hi guys, it's my understanding that Jaguars R version model has a detuned motor, which was originally rated at 650 HP. Detuned down to 550 HP. Jaguar should offer customs an upgrade option. You would pay for a software upgrade and possible Cat Converter, change to less restrictive Cats. This would be a dream come true, since the custom tuning is done by OEM Jaguar dealership.
So let's call this, Fantasy Post.
Jaguar will never do this.

 

They are Saving it for a special model release :-).

Already up to 575 with SVR/Project 7

 

Would it be worth paying 5-10x as much for the tune as you would on the aftermarket? Not for me. Also they couldn't legally sell you cat upgrades, Harley Davidson got in big trouble for that a while back.

 

well the big hypothetical difference is the warranty.

I'd pay a few extra grand not to have to sweat problems down the road

 

With aftermarket tuning, the warranty goes right out the window. Big risk!

 

You guys are driving around with 550 horses under the hood, and you're talking about risk? Get a Volvo! lol

 

Firstly, I'd question the original statement for two reasons though I may be splitting hairs a little;

1) It has nothing to do with the "R version model". All Jaguar AJ133 engines used in F types are identical so there is nothing special about any of them compared to the others. You can use the highest tune (SVR/P7 - 575hp) in the the 495/510 or 550 version with identical results.

2) I doubt it's so much a "detuned 650hp motor" as it is a motor that Jaguar tested in the 700 - 800hp range for reliability testing......so far it has been released in several different HP ratings.

Secondly; you're right, JLR would never do this (offer software upgrades equivalent to more expensive models) however you can already get the factory 550hp tune or the 575hp factory tune downloaded into your current V8R or V8S if you like.....it's been done. I'm strongly leaning towards having the Project7/SVR 575hp factory tune downloaded into my car.

Cheers,
Dave

 

Really ... Where can one go to get the engine software to increase the motor's horse power to 575 HP.
Not from the dealer, right.

 

Nope; not from the dealer. Call Stuart Velocity Automotive Performance, Inc.

I think I'm going to install the 575hp software, my Project7 grill and surround and call her a P6.5! LOL. .....I love the P7 but couldn't live with the lack of the real top, windy passenger seat, harsher suspension, reduced ground clearance, etc. etc......this would give me only the elements of the P7 that I want and/or can live with.



Dave

 

Dave, I don't know if you know, but where did Velocity get a hold of the software ???
It's my believe from what I remember from DINAN , in.order to have the OEM software, the engineer must decipher the code and do some type of reverse engineering to modify the software. Not such an easy thing to do.

 

I don't know but I just spoke with Stuart last week on the subject and was told all parameters (of the proposed download) were exact duplicates on the JLR files/tables. ....not to be confused with his 605hp tune which is obviously different.

Dave

 

It's actually very easy with the software that is now available. You don't need to be able to decipher the code to copy and paste an OEM tune onto an original "lesser tune" file with the right VIN. The trick is in being able to decipher a tune adequately to safely "enhance" an OEM tune. There are hundreds of data tables, many of which are unused or serving as alternates in the event a nanny is engaged.

 

We got the Project 7 software from a read I did from an actual local Project 7. I then took the file versions like the 495ps file, 550ps file and the P7 575ps file(which is the exact same as a SVR) and compared the hex code to find out how Jaguar does their power increases. Yes, I have all the stock versions :-)

Is it easy? Depends on the person reading the code and how late the wife will let me stay up before I find space in the doghouse..

Guess it really depends on how long that person has been reverse engineering code(tuning) and also how in-depth of a tune can that editor create. If the tuner is modifying files on HP Tuners/COBB/Titanium..etc, that person might be able to dial in some of the BEST cars, but that's if the map drivers are available in the program their using. Most popular tuning programs have a prebuilt dashboard interface which has the maps already identified in the hex. Problem with some of those software's is for the "rare'er" vehicles, not much support is provided or the maps identified aren't what they appear. That tuner might have a little difficulty sorting through the hex file and knowing what a simple MAF bar graph looks like.


When a particular tuning company, made a few files awhile back for a couple members on this forum(I won't mention the name but most are aware who it is), those couple of members who bought files were kind of left hung to dry with issues in the file and nobody really giving a life-line to get their vehicles back up and running.

A forum member had reached out to us for help on the issue, we got his car running and word of mouth mixed with this forum site helped get us on the page with providing Jaguar/Land Rover tuning files for the 5.0L Bosch systems. If you check back near the beginning of this thread, it wasn't an easy battle, especially for the 3.0 boys and girls...

 

You explained exactly what I want to know.

 

Just like you wouldn't trust some back alley doctor to conduct a heart surgery on you, you shouldn't trust just anyone to tune your F-type. Always check their references and insist on documented (that would be dyno) outcomes.

Still, the safe bet is to avoid having heart surgery altogether.

 

Has anyone on the forum had the 575HP tune put in their car? It would be nice to get some actual feedback from someone who has done it.

 

Is 550 simply not enough? I understand the love of modding and squeezing out more HP/TQ - but there are better [and cheaper] cars for that like the Mustang and Corvette.

 

Yes, but they just don't offer the panache and luxury of an F-Type.

 

Apparently the engine was designed for 650HP! Not sure the transmission and driveline would be able to handle the HP and Torq. increases though.

 

The 8HP70 ZF 8 speed has an advertised torque capacity of 516 lb-ft but will safely handle 560 lb-ft. I would not push it any higher than that if you want it to last for a couple hundred thousand miles. There are other ZF 8HP trannies with advertised capacities up to 737 lb-ft that would probably be a simple bolt-in.