I’ve recently sold my gorgeous gray 2007 xkr convertible. Fortunately I’ve replaced it with a “mint” condition 57 plate black xkr convertible with only 33k miles and full main dealer fsh. Only reason for swapping was a reduction of 67k miles and perfect condition. Now both resonators have been removed so it’s straight through from the cats back into the standard rear box but I’ve removed fuse 19 👌🏼👍. The sound is intoxicating deep burble and good crackle on deceleration. Best bit is it’s not too load or booming on motorway driving speeds.
Due to such low mileage I’m thinking of adding performance and looking for sensible ideas, re-map (who’s best?) or top pulls reduction etc etc.

Looking for ideas 🙏

 

PM AlexJag. Great guy...

 

Well, since I don't know what "57 plate" means specifically, I'll just ignore this post. I do know that it designates the year, but what year? 1857? Beats me...

 

My XKR
UK designation on first registration, simply registered between 01 September 2007 and 31 March 2008.

 

Exhaust, pulley(s), & a ECU tune or Racechip.

 

Racechip ? Don't waste your money. Even more reputable tuners have struggled to get our 4.2 Denso cars tuned , some managed to loose hp , some gained very minimal. Doubt someone like racechip has any chance to get this right .

 

Read several threads were power gains have been made to the 4.2 XKR..?
Not looking to change the exhaust any further as that’s sorted so thinking possibly sport cats, but Top pulls reduction on supercharger and a remap.
Previous 4.2 XKR had a Viezu remap and it appeared to make slight difference to the mid-range.
Anyone else actually/genuinely made good power gains to their XKR?

 

Please see my threads and check my signature. Have the highest Dyno numbers on 4.2 xkr with basic bolts ons that I know off.

 

That car is super sexy

 

N02...