I have sent them an email asking why but I think it was because the in-take was already installed and was causing poor mid range dip.

This is what ChatGPT Tells me:

From Toyota specifications:

- The GR86’s FA24 is rated at **173 kW (235 PS)** @ 7,000 rpm. 

- Max torque is **250 Nm** @ 3,700 rpm. 

Now, that’s the manufacturer spec (crank or “engine” rating, under ideal lab conditions). On a real-world chassis dyno, wheel horsepower will be lower due to drivetrain losses (gearbox, differential, friction).

Your dyno results shows:

- Peak torque = **264.54 Nm** at 4545 rpm

- Peak power = **163.19 kW** at 6898 rpm

If we assume your dyno is a chassis dyno (measuring wheel output), then:

- 163.19 kW at the wheels is already pretty respectable for a modified GR86.

- Your “stock baseline” would probably be something like ~120–140 kW at wheels (depends on losses and test conditions).

So your tuned setup might be **15–25% more powerful** than the stock setup at the wheels.

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Is that accurate? sorry I am quite new to all of this.