OEM vs AMS Upgraded: There is no competition 🏁 Our upgraded unit comes out on top in every aspect. Better performance, better quality, better in every measurable way. The S58 Heat Exchanger for the G80 M3, G82 M4, and G87 M2 from AMS Performance, there is no comparison 🥇 But don’t just take our word for it, this component has gone through rigorous testing 👨‍🔬 In-house bench testing, dyno testing, on track testing, this heat exchanger has been thoroughly tested before being released to the public 📊 We are confident in our products because they are backed up by engineering and validation testing. We hold our products to the highest standards in order to produce the best possible parts for every application 🏆 See what the hype is all about, upgrade the performance of your G8X BMW today with our S58 Heat Exchanger 🥵🥶 ✅ Largest Drop-In Heat Exchanger Available on the Market ✅ Dual Pass Design with 35% Larger Core for Maximum Cooling ✅ 16°F Lower Coolant Temps Than the Competition ...