Start to my 1000hp c63s build
car is 2018 c63s 8k miles (has every option available from factory besides race seats!)
First mods done:
Chrome delete grille and door handle and wrap the roof in gloss black
Debadged rear (amg, c63s) logo
Gloss black replacement v8 biturbo and trunk Mercedes logo.
KW H.A.S coil overs
12mm rear spacers
15 mm front spacers
Mode carbon: front lip, Rear defuser, bootlid spoiler
RW carbon: side skirts and mirror caps
Will update pictures in the next week or 2 once the carbon is done being installed!
I’m knocking out all exterior mods first then turning to the engine. The future build will be
Pure 900 turbos
Custom fabricated 3.5 inch cat back exhaust (straight pipe)
Custom fabricated catless down pipes
Intercooler
Pro meth methanol kit
Weistec carbon airbox
Wider front and rear tires (thinking 305 rears 265 fronts )
Dyno Comp transmission tune
Dyno Comp 2 map ecu tune (100 octane tune, 91 octane tune)
Feel free to comment or PM me any questions, tips or tricks! I will be posting pictures updating the car as she comes along!
Thanks
Last edited by J3WISH; May 21, 2020 at 04:53 AM.
Best bet would be to chat to you tuner and get an idea about what would be achievable with what equipment.
I haven’t heard of anyone hitting 1000hp with the pure 900”s but this doesn’t mean it hasn’t been done!
I’m a big fan of the pure 900”s so would recommend them to anyone unless they want to go for 1000hp plus , your only option after that would the the Weistec W4 (since yabeela has turned to ****) which I think realistically with your power goals would be a better bet.
You may also want to look at the Spool HPFP upgrade , this will allow you to run high E content fuel , you don’t want to be rolling around on race gas 24/7 !
lastly get the biggest semi slicks you can get on the back of the car , I’ve got 295 R888r on the back and they still struggle with traction !
Last edited by zipzap; May 21, 2020 at 08:12 AM.
car is 2018 c63s 8k miles (has every option available from factory besides race seats!)
First mods done:
Chrome delete grille and door handle and wrap the roof in gloss black
Debadged rear (amg, c63s) logo
Gloss black replacement v8 biturbo and trunk Mercedes logo.
KW H.A.S coil overs
12mm rear spacers
15 mm front spacers
Mode carbon: front lip, Rear defuser, bootlid spoiler
RW carbon: side skirts and mirror caps
Will update pictures in the next week or 2 once the carbon is done being installed!
I’m knocking out all exterior mods first then turning to the engine. The future build will be
Pure 900 turbos
Custom fabricated 3.5 inch cat back exhaust (straight pipe)
Custom fabricated catless down pipes
Intercooler
Pro meth methanol kit
Weistec carbon airbox
Wider front and rear tires (thinking 305 rears 265 fronts )
Dyno Comp transmission tune
Dyno Comp 2 map ecu tune (100 octane tune, 91 octane tune)
Feel free to comment or PM me any questions, tips or tricks! I will be posting pictures updating the car as she comes along!
Thanks
That's the headline figure I'm expecting on my 911 turbo and the modifications to get there is pretty extensive, fully forged, ported, syvecs, twin Alpha3076, bored, stroked, GT2RS gearbox, 2wd conversion, level 5 axles, meth inj, flexfuel. I really need straight cut gears, but I don't want the whine in a road car so I'll detune it a bit. Just slapping turbos on and a remap is asking for trouble. You'll have a faster car if you keep it driveable, don't go for the pub number.
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That's the headline figure I'm expecting on my 911 turbo and the modifications to get there is pretty extensive, fully forged, ported, syvecs, twin Alpha3076, bored, stroked, GT2RS gearbox, 2wd conversion, level 5 axles, meth inj, flexfuel. I really need straight cut gears, but I don't want the whine in a road car so I'll detune it a bit. Just slapping turbos on and a remap is asking for trouble. You'll have a faster car if you keep it driveable, don't go for the pub number.
Maybe you have deep pockets, and can drop $50K in a car you likely picked up for around $60K. But more than likely, I think your appetite exceeded your funds in this endeavor, Feel free to put your money where your mouth is, and make me put my foot in my mouth though
as far as exhaust I’d be adding almost an inch to the entire exhaust from 2.75 to 3.5 which will help with airflow and turbos! It will also sound great. If it ends up being too loud I’ll throw on some mufflers and cut outs!
Maybe you have deep pockets, and can drop $50K in a car you likely picked up for around $60K. But more than likely, I think your appetite exceeded your funds in this endeavor, Feel free to put your money where your mouth is, and make me put my foot in my mouth though

Good luck with the build man! I think you'll need to go with turbos bigger than the Pure900 kit to get your 1000hp goal at the crank consistently / reliably. Also might want to do some research on pure turbos exploding and sending shrapnel through your engine bay/exhaust lol if tuned by someone who doesn't know what they're doing. You'll need a tcu tune, and possibly upgraded clutch packs too. Upgraded intercoolers, plus the meth but looks like you have that covered.
The only thing I would add is once you get above 800hp at the crank...you may want to add a clutch rebuild for the tranny. IDK but that is what I have heard. I am at around 650 at the crank and have no problems (knock on wood) but I do not 1/4 mile my car. Mainly street driving and I do 1/2 mile race it 3 times a year at NFZ.
You'll need bigger rails, fuel pump, probably lines too. Maybe E63s pistons. C63 headers are small bore, you'll need bigger. Get it ported if opening up. Standard intercoolers won't be big enough. Then there's cooling, bigger rads.
This is why I reckon you're best getting an E63 lump, chill cast, bigger oil pump, low comp pistons, headers, rails etc. You'll still need rods though. Swap all the bits over and offset cost by selling your C63 block.
Good luck with the build. To be honest, this isn't the platform for 1000hp. It's a jumped up family car, get a proper sports car!
Also, your website states you can provide "calibration details to your existing tuner." So I'm assuming the FP can be easily controlled via an ECU tune; no aftermarket controller or ECU required, correct?
You are correct about not needing an aftermarket controller. Ajay sends the DME changes and your turner applies them to your tune file







