I would not want the kind of frustration I've been through to my worst enemy, high expectations that were shattered, going through logs/ tune files on a daily basis for close to 30 days, money spent on dyno logs, mixing race gas to try if fuel was the issue, adding methanol, buying more car...
To be honest I did not have going bigger turbo on my mind.. Also parts kept coming in to help with what I was facing..
Got the catted down pipe since I was on stock tune and did not want to flash my car
Well my brother living in the same house is the original owner of a 2002 AP1 S2k.. Has been parked dead for the last year.. Used to drive it every once in a while.. Funny thing we discussed how the Supra feels like a modern day S2k
Tuning on catted maxed out at 444
Using exact same load targets and only changing pressure and cat heat tables to address catless resulted in 78whp increase
Yes, big gains
Dyno log below for those interested:
https://datazap.me/u/a90moe/rev-30-5th-gear-dyno-run?log=0&data=4-7-13-23-24-25-26-27-28-29-31&trim=0&tmin=10.34&tmax=20.86