Hey Brian, here is a link to Munroe ct20 stage 4 upgrade via his website.Raamo appreciate you sharing this on the Aussie car. No disrespect was taken. Sounds like both cars are very similar aside from the Munro turbos vs the Stu GT28r turbos in mine, and he has a ported head. Although mine does not have a ported head, it does have some porting to the exhaust y pipe, and has a 4 inch down pipe.
Do you know the spec difference for the Munro Turbos vs the GT28R?
At full kill setting 5, I was at 29 lbs boost, at 615 whp with same transmission and same 4K stall. Different Dyno numbers cold be just that... different Dynos... assuming his was not a DynoJet.
So not sure if there is much difference other than he has a ported head. That is my best guess but since we are talking about tenths of a second difference in our elapsed times, this is just guessing. Actual difference could Also be due to different track and air conditions, air temps, altitude, slight incline at Fontana track per my GPS. I was told Fontanna is not considered a fast track. Only way to compare 100% accurate, would be to run on same track, same day.
Thanks for sharing. Good stuff! This is cool to see on 2 different similar stock twin housing setups, although not exact same, with very close times.
Toyota Supra Twin Turbo ct20
Keep an eye out because within that page there is a link that will eventually detail the full stage 4 turbo specs. There is further development though. A couple of years ago Munro developed a stage 5 kit using Toyota triple ball bearing centers but does not seem to have the time to go in to full production. His services wait list is long!!
The assumption with dyno's is correct. More than likely tuned on a Mainline dyno, but what I do know is that Alpha remotely tuned the car being ProEFI engine management. Regardless of dyno sheet horse power, it will be safe to say that both cars are producing similar rear end horsepower going off 1/4 mile times .
Yes, It's fantatstic to know that there are viable options catered for all US, Euro and JDM spec Supra owners who want the "stock" look and have a 9 second potential car without going single. Big thanks again must be given to Stu Hagen persistence and visions for continuous improvement so that people like Munro can further develop and apply the ideas with their particular skills set for all to benefit.