I noticed this thread might've gone a bit sideways so I'll reiterate, just showing what a big $ stock block build looks like on a dyno with new tech. No ball busting, friendly debate and here's what a GN can do since 99.999% of these turbos are not on our cars.
BTW, tuner made the AFR the same, apples to apples, 11.1 etc so you have to adjust the VE, not safe to leave it alone.
If these weren't so expensive and a PIA to get on or cars you'd see a big shift this way over the next 5 years. The Mustang dyno graph is crazier than the Supra, we max out the turbo in the low-mid torque range. These maximize our engines advantage, low-mid torque.
Spool, my 800tq and 64/66 comment was about "when" it will produce that torque, 3500rpm on the G30-770 is definitely earlier in the band but agree the 64mm is stronger. But I'll say on the street flashing to 3600rpm and hitting 800tq+ is wild, instant pull and it finally spins the tires on hammer downs while driving (didn't do this after all new rear suspension and TA49 on the car).
Spool, you know better than anyone what the TA49 can do, you'd have gone low 10 with this turbo no doubt.
Spool you are correct, a 3 bolt can flow those numbers but the V band will do it better and spool sooner, my main point. Import world demands proof so they make big shops show T4 vs V band etc and the V band only loses to the twin scroll in spool, that's it. (Garrett makes a twin scroll V band but not relevant to us).
Our 3 bolt has been surpassed hence my thread and comment to show what our platform can do with the modern tech. Agree the turbo is the majority of the gain but the housing matters and V band spools/flows better.
Great link to see what Garrett shows the V band vs T4 can flow (check out .82 vs .83). Spool on V band is better (other online tests), flows a tad more.
Not a bash the old tech thread, just here's what the new Turbo tech can do to a really stout GN size vs size.
Just noticed this thread ranks in search results for this turbo, G30-770, LOL. 99% are gonna wonder what a 3 bolt is and the other 33% what a GN is.
800tq > 700hp young import street heroes, Grandpa National got 2 new hips and ready to play ball.
