I have only done this on the 4.3 STR/XJR as there is an easy fit. The XKR is a different beast, but also there the stock intake is a restriction.

 

I have never had to do a ECU tune to get the MAF to work, and I have used this on the stock injectors. Pro-M can also adjust the tune for high flow injectors, where I used them om 600cc ones.
You may want to ask them why they think you need a ECU tune.

 

I took some time and tests as well before I had a good supplier I could work with, I'll ask the one I worked with (Hong Kong based) if they can do metal casting using lost wax.

 

Well, you win some, you loose some. Car was a few seconds from burning down today on the dyno right before the pulls... fortunately the Jag is alright. Will just have to re-run some wires.

 

hello guys, do you know anything about TJoe?

 

Still possible to purchase one of these bad boys?

 

Greetings Alex. I don't think these are available. But perhaps you can PM Cristian just to be sure.

 

I I couldn't wait any longer so I managed to get mine bored out and with the new butterfly to 80mm

 

Nice , but did you succeed to make it work with the 4 pin version?Or the original version you had is the one from the picture?

 

Unfortunately you can't mix the 6 and 4 pin versions, unless you also change the electronic signals as they are different.

 

My new throttle body arrived a few days ago. Beautiful module. Glag I got one! I need to dig out the OEM TB and swap parts to make it a complete unit.
Have everyone else received theirs?

 

My car is 08 Xkr and this is the original TB bored out and enlarged butterfly. Not waiting a year to get them made for our cars 😂
Btw those coolant lines aren't necessary , could of removed those from the mold to make things easier .

 

Recommending removal of the coolant lines isn't quite correct. In southern regions in the USA where it seldom gets below 32 degrees, the coolant lines can be bypassed. But in northern regions where temperatures get down to 0 degrees and lower, coolant flow is important to keep ice from forming in the throttle area.

 

Alex, where did you get your TB bored at if Maxbore doesn’t do Jags anymore?

 

Did you get a response ? I PM'd him after a few days & have been ignored.

 

Sorry I was off the site for a while. So original TB was done by Maxbore but it sounds like that was last jaguar TB he was wiling to do. I have sent my 2nd tb to another guy who will see if he is able to get it done. Fingers crossed that he can do it

 

Robinus, I did. “I am really sorry, but the old lathe I used to bore those huge TBs quit working a few years ago.
I could not get it repaired.
I replaced it with a modern lathe, but it can't spin castings that big.

I am not able to help you with that TB.

Thank you
George
www.maxbore.com”
Alex, I can’t wait to hear if wherever you sent yours to was done.

 

I was asking if you'd maybe had a PM from Alex, but thanks for posting that for me. I emailed Maxbore as my first stop months ago even though I knew he didn't do Jag TB's any more. I've been looking for months & have had plenty of people tell me how easy it is before saying they won't do it.

 

If you are looking for a machinist to bore out a throttle body, don't get hung up on having it bored using a lathe. Any qualified machinist that can set up a numerically controlled mill or CNC mill should be able to very accurately bore out a throttle body. Using a CNC setup one could flare the upper OD to a larger diameter and/or other features. If the CNC has rotary table capability that could make the job even easier.
If the shop has a centerfinder fixture, they could quickly find the exact center of the existing bore, then swap over to a mill bit to mill it to a close-to-finished diameter. Then they could put in a surface finishing grinder/cutter/polisher and get the finish to whatever you want. (Even a super fine polish.)
Should be a piece of cake.
I bore out larger holes on a fairly regular basis using my mill and rotary table. My mill is a manual one and is tired and it would take too long for me to achieve the exact diameter and finish one would want on a throttle body bore, but the concept and approach is the same.

 

Would agree as well, which would leave the throttle blade as (last) major hurdle.
I would guess that maxbore could be able to help there, and the small mods to the shaft would be easy to do as well.
One can always try with a cheap 2nd hand unit from Ebay to check what the maximum diameter can be, before you do the right one.

At least that would have been my approach if I needed one.