You say it has supporting mods to go along with the intercooler, who mapped the car for the modifications you've made. A standard UK Turbo with all cats in place was 212-218 from the factory, PPP versions were a bit more and then just losing the downpipe cat and adding a decent panel filter should push it to 250ish, losing all the cats, sorting the standard top mount intercooler hose and then getting a good map on good fuel allows 280 to 290 depending on the car. There isn't really any advantage to adding a big front mount to a TD04. 220ish at the flywheel could be correct.
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