Hi everyone!

I have been building my 2019 GLC63s for a while now. It's current mods are:

Weistec Methanol
Weistec Heat Shielf
Weistec VTA Blow Off
Weistect Downpipes into Valvetronic Titanium Exhaust
Weistec Intake Manifold (Direct Port not installed)
Eventuri Cold Air Intake
Pure 1000 Turbos
Tuning Done by Eurocharged Dallas
I believe that's all the mods

Made 686 to the wheels on 93 octane

For a long while, the car misses at the top of gears, especially in Sport + or Race. We tried cold NGK, we went back to stock plugs, made sure all the boots and coils are good and checked pretty much everything we could. It threw a code recently about bank 1 on the rail. I cleared the codes after it cut out hard and wouldn't shift before going into limp mode and it came back to life better than ever, but it still has moments where it misses hard up top.

It does run hotter than I believe it should, and currently, I'm looking into all the cooling mods I can do. Is anyone familiar with the best of the best options I can do. This is what I have been looking into:

• Front heat exchanger upgrade
• Transmission split cooling kit
• Auxiliary radiators
• Larger intercooler radiator
• Upgraded intercooler pump
• Turbo heat shields
• Always-on pump strategy
• Oil cooling upgrade

Does anyone know what's out there that's definitely going to fit my X253 GLC? I would love for this car to run right so I can enjoy it. Even in sport mode with the exhaust open, it pulls so hard, but I know in race mode, if this thing were running crisp, it would be pretty ridiculous for a street car. I went out and bought a G80 M3 Comp as my daily until I can get this running right. We got my wife's 2017 GLS63 upgraded with Pure Turbos, downpipe, and a tune, so having both of those is fun and reliable, but I just want my baby to come together.

I'd greatly appreciate any help. If someone comes up with something besides cooling, I'd take it into consideration. I nearly dropped the motor to add the direct-port fuel, built motor, CNC-built head, and built tranny for over 1000 wheel HP, but part of me just wants the current setup to run right before going any further. I don't want my problems amplified if we don't figure this out first.

Thanks everyone

Video of the car

https:/www.dropbox.com/scl/fi/ccy735v0p8vdd7g9y8zpp/copy_035756F6-7EF6-4572-8919-A6B8CAA581D7.MOV?rlkey=2eumekdt0jgdy6gd3g09bt91x&s t=vngptob4&dl=0

 

I'm nowhere near modified as you, but looking at what you have I'd do a CSF radiator and a split cooling upgrade from Modal works. If you're handy with doing your own it's about $1500 in parts.