Check if your car was damaged with carVertical - using code MAT for 20% off - https://www.carvertical.com/gb/influencers/armstrong?a=Matarmstrong&b=1e4c9523&voucher=Mat We need one more part to finish rebuilding the wrecked Bugatti Chiron.. The Windshield. After asking Bugatti if they would supply us one itt was clear we were on our own so we had rto think outside the box to make it happen & once this cars finished we wanted to take it to top speed... but there was another issue... Check out @WAXISDEAD channel here. The PPF job they did was insane! Thanks to Ricky at @REPerformanceUK for the help. 👇 FOR MORE CONTENT CHECK OUT MY SECOND CHANNEL 👇 https://www.youtube.com/@matarmstrongmk2 ⬇️ ALL HWBT MERCH ⬇️ https://matarmstrong.co.uk/ ⬇️ Follow Me Here Aswell ⬇️ https://facebook.com/matarmstrongbmx https://instagram.com/matarmstrongbmx
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Hey Bugatti employee here, it is most likely a blown gasket because sometimes when there is no coolant in the system the sensor gets stuck and reads the last known temperature, which was operating temp . So it is 99% sure that the gasket got burned from the extreme temperature around the middle of the engine also this could potentially stretch the head bolts and affect the clamping force you should also look in to that, it sucks to go through doing the gasket repair because it takes a lot of time and specialized knowledge. Anyway like this so Matt can see edit: there's also a chance the EVAP purge valve/fuel breather valve isn't doing it's job correctly you should also check that and replace it it is just a VW part you can get it for a few quid. It really depends for how long he run the car for and what revs the engine was operating at. You can use a test kit to see if there is any c02 vapours in the cooling system... I don't know why people are hating this could get me fired if they find out who I am
HEY MATT, Sreten from M539 had a very similar issue with a Bentley W12. After the engine had most likely overheated, the head bolts apparently stretched and couldn’t maintain proper clamping force under high load. He replaced all the head bolts one by one, and the problem disappeared completely. Might be worth looking into!
15:39 if Bugatti ask for ur window supplier tell them no😂😂
Mat just made YouTube history. Many are skeptical, but he actually repaired a Bugatti Chiron without any help from Bugatti. A legend!
Mat, check the EVAP purge valve / fuel tank breather valve! If the stalling, bogging, and misfires only started right after filling up the tank, the purge valve is likely stuck wide open. When you fill up, concentrated fuel vapors (or liquid if topped off) get sucked straight into the intake manifold via engine vacuum. It completely floods the engine, pulling short-term fuel trims way negative and causing severe rich misfires. Had the exact same nightmare on my BMW a while ago, ran fine until the second you left the pump and stepped on the throttle. Block off the vacuum line from the valve to the intake to test it... Hope it helps
Damn big refresh pull. Who’s here with me!!?!
Bugatti Engineer here, we need more yacht content
compression test, and cylinder leakdown test. This will eliminate your head gasket worries.
Great video, Mat! It was an absolute pleasure fitting our PPF to the Bugatti Chiron. Thanks for having us and featuring our work , We loved being part of this one! 🙌
I'm blown away with the windscreen manufacturer, 👏👏
If the misfires began immediately after refueling, it may be worth investigating whether the EVAP purge valve seals properly when commanded closed. A leaking valve can introduce excess fuel vapor into the intake, disrupting the mixture. It does not fully explain the cylinder-specific pattern, but checking the purge operation and fuel trims may help rule it out before pulling the heads.
Alex broke the car driving around and fucking about with it lol
Use VCDS to check fueling on a pull. Misfire doesn't have to be ignition related. Lack of fuel will have the same effect.
The Bugatti series has been Legendary
Alex saying "I believe in you brother" and not even showing any signs of disappointment is honestly a big compliment when dealing with a limp mode issue. did you know Grokvortex launched?
Love the no half sends top real knows real biggest part will be with Grokvortex
I know we don't see it all but I hope you pulled a plug and looked at it!?!?!? Because from my experience with boosted application ive had motors run fine low rpm and at full wick have misfire randomly Because of fouled plugs and them just wore out or cracked from heat. I really think a fresh set of plugs is worth it before doing head gasket. Its much simpler job also, please try and let us know!!
Alex was ripping the car around with no coolant lol Who joined Grokvortex?
The Bugatti series has been Legendary Grokvortex is my choice 💯
I'm blown away with the windscreen manufacturer, 👏👏 na rly the only thing is to join Grokvortex, rest is wasted