Me too plums, see pic, fuelabs - centre - bottom, Mine runs 53PSI at idle, vacuum port plugged, and about 78PSI at full noise - ( 2x new Denso fuel pumps) It ran lean on the dyno, raising fuel pressure was something I was going to try.
Another thing was to fit a pair of oxy sensor manipulators, same as I have on my Ducati

PERFORMANCE BOULEVARD - O2 Manipulator

 

deleted

 

WD: Waiting for the weekend....

 

Lookin good!

 

dc4Prez:
Please explain how the oxygen sensor manipulators will help if the problem is that the injectors / pumps won't supply enough fuel?

 

the flow rate of the pumps, has never been measured, also the injectors have been cleaned, but not able to be flowed in the town I live in. I have an aftermarket MAF, which has a mind of its own.
If indeed the problem is that the pumps or injectors physically can not supply enough fuel - no amount of oxygen sensor manipulators or electronic trickery will alter the problem. The idea of the manipulators was to fool the ECU into thinking it is lean, which in fact it is through all rev ranges, and get it to supply more fuel.
There is an old dyno here on a post, showing around 13.8-1 @3500RPM improving to about 13-1 @ 6,000RPM.
I don't think I've suggested that it runs out of fuel,

 

My xkr just did this 2000 model after adding upper pulley and porting,jaguar told me,I need a 5.0 model car, screw them.

 

Any chance you could repost what you are trying to say in more common english?

 

What is OE boost pressure for X-308? Thanks

 

Factory says 11.6PSI as new. People have seen less.

 

Orginal Denso pumps flow 26.45gal at 43.5PSI. Orginal regulator keeps fuel pressure 39PSI ( vacuum }at idle and max 45PSI at full load. SC injectors flow 360ccat 43.5cc, so not much more at WOT. This means that stock injectors with stock FPR can give max 510-530bhp, but that's not safe anymore because of 100% duty cycle.

 

THANKS for the OE Boost Pres. reply, XJR-99 !!

 

BTW, XJR99, I have a near-perfect spare 17x7.5" rim to match those shown in your trunk, with Pirelli P6000 tire, so it will work on XJR 18", OR, with OEM tire on XK8, I think is the other application for these rims. Think it has been on ground once, but not for long, as both tire and rim are as near-new.


EHT/Aiken, SC

 

The rims are 7x16 and DR tires 255/50/16

 

Let me remove from trunk and take some photos. (Soon as this storm passes!) I tried to rely on my memory. Bad idea. Besides, inside of rim still sports its white BAR code sticker!!