Depends on your tuner.. for example mine is setup to show ethanol % and boost pressure but they can also just increase the limits to show higher hp and torque figures.
Should only cost $4k.. but 26hp without a tune is impressive (especially for those who can't). Add in a tune and increase boost pressure? should make a large difference.
Power gains are had with their intake alone (no tuning needed)
Full writeup by mtoiq:
https://motoiq.com/testing-the-csf-vf-engineering-a90-a91-supra-intake-manifold-intercooler/
Most importantly let’s look at the difference in power output. We had a lot of dyno data from all of the...
This would fit a91's. The intake manifold did not change from 20 to 21'.. also I heard gains around the 20hp mark were made with this upgrade alone however I'm not sure how unless they tuned for it.
Nothing against P2uned but I'm hoping Darton releases their sleeves before I get the work done.. otherwise I'll have to use P2ned since they're the only other company making sleeves.
I was once there myself lol.. thought I'd be happy with a Pure800 and some minor fuel upgrades.. now, I'm having the trans, axles and bottom end of the motor rebuilt/upgraded this winter. I'm now hoping 1,000whp will be enough.
No reason to go top mount if you're wanting 700hp.. for about 8k, stick with Pure, port injection and a mild trans upgrade.
If you're able to do the work yourself and want a reliable 800-900whp, look to spend about 25k between turbo, upgraded fuel system, transmission, torque converter, axles..
The factory wastegate is somehow able to control/ throttle how boost pressure is released. If you're using an external WG than a BOV should be used.
There are ways to reference boost.. I'm using an adapter for a BOV and Fueltech ECU...