i have a 200hp cap. Every 1hp i'm over, i need to carry 18lbs. Im under weight... precision and consistency is the key.Surely the best way to restrict power is by tuning the vtc? It's all ready there, Fully variable and really effective.
I need to hit 200hp as soon as possible and carry it as long as possible... SCCA STL K20Z3 legal motors still make +225hp (they have less lift, more duration cams... more compression, and a 44mm restrictor plate)
In the 8th gen there are several ways to detune (or a combination of ways to detune)... its DBW, so you can dial down the throttle body flap opening by rpm, you can restrict VTC, you can restrict timing, and/or you can run a restrictor plate.
If i rent a dyno for the day... i'm going to try every single way to get the best power curve possible. A restrictor plate is a tool in the tool kit... takes under 10 minutes to layout and cut 6 of them. takes a minute to swap out on the dyno.
yes... i have spent an entire day swapping headers and intakes on the B18C5... getting tuned... to find the best power curve my car can make. you can bet the farm i will do the same with detuning this car.
At the end of the day, my tuner (tunes a lot of road race car) said "you need to make some restrictor plates at 60, 58, 56, 55, and 54mm" ... so i do it.