McLaren 675LT XperTune Performance Software Interior along with the shielding for

along with the shielding for the secondary catalyst bypass

Have questions about the tuning process or want to explore the best physical upgrades to complement your upgrade

but we were looking for more power

458 Italia Sport Headers

McLaren 675LT XperTune Performance Software Interior along with the shielding forAchieve maximum power gains (~66 whp & 43 ft lbs) without sacrificing drivability or reliability. Maps are available for completely stock cars, or for cars equipped with Sport Cats, Cat Bypass Pipes, upgraded turbos, and more. Once we receive your ECU, our tuner bench flashes it with the upgraded ECU map and we return it to you for easy re installation; no modifications to the vehicle are necessary. POWER: Stock = 582 whp 490 ft lbs Tuned = 629 whp