Finally Drag Racing the Supra after 9 years! 

Thank you sir 🫡 Was hoping for better but happy enough with it and moving on 😂

Great work

Yeah man I’ll have to do it on the next one though!

Axle tramping is where rather than the car simply losing traction and the tyres spin smoothly, they’re actually skipping and bouncing around, which you feel as a banging violent sound through the whole car.. I believe it’s typically caused by soft suspension bushes and/or incorrect suspension set up in general. Each skip and bounce is like another shock wave through the whole driveline and it happens so rapidly like a machine gun going off, that there is a high chance that one of those shocks will crack, or snap something while the old 2J is trying to turn it all with no remorse 😂

Duty cycle is what we change in an electronic boost controller to raise or lower the boost. At least in my boost controller, the duty cycle refers to the amount of pulsations that the solenoid is doing to let a certain amount of boost pressure get to the wastegate. It has a pressure sensor that tells what boost it achieved at its peak, and you can watch it live but it’s hard to focus on the live boost while trying to send it. The only way to watch boost properly is actually to go into the data stored by the ecu on any given run that has been done. The ecu has its own safety measure programmed in during the tuning process to make sure you don’t blow shit up so for whatever reason, I think I accidentally set this limit to 23psi so whenever it got too close to that, it would cut out, hence my constant adjusting of the duty cycle to find a sweet spot. The only run I got to 23psi was the last run where it was heaps faster, but the result was worse because it cut out and it fried the tyres coming off the line so the whole run was wasted

Hey mate yeah I was running a radial but no burnout to get it to any form of temperature and I think the tyres were on 23ish psi but I can’t remember now. Even if I had more grip though I’d be too scared to launch it hard enough because I was terrified of breaking it

@@Matt_JZ ahhh okay, for a manual you try and run a slick, start pressures from 15 and work back. Riding the clutch is key as well if you don’t want to break anything!