Welcome back to Guzzoline Garage! In today’s video, we take my Jaguar F-Type R down to Viezu Technologies in Bidford-on-Avon for a full dyno session — before and after mapping. This V8 supercharged beast has been fitted with a host of bolt-on mods: uprated pulleys, sports cats, charge cooling, and intake upgrades. We’ll go through the results, talk about why I was slightly disappointed with the numbers, and discuss how factors like heat soak, weather, and dyno type can affect performance. Final figures: 💪 625 horsepower 🔧 625 lb-ft of torque Not bad for a road-driven car with bolt-ons, but there’s still room for improvement — especially once tuning and cooler temps come into play! If you want to see how all these mods were fitted, check out the build series on my channel — from the supercharger pulleys to the charge cooler and exhaust upgrades. 👉 Subscribe for more builds, fixes, and honest garage talk from Guzzoline Garage. 👇 Drop a comment with your thoughts or dyno stories — always keen to hear how other F-Type owners get on! 0:00 – Intro 0:17 – Discussing car mods 1:12 – Power figures revealed 2:26 – Dyno run clips and printout 5:05 – Final thoughts and wrap-up #GuzzolineGarage #Jaguar #FTypeR #FType #Dyno #Viezu #Performance #Supercharged #Tuning #British #Engineering #DynoDay #V8