whether you believe the percentage loss or not doesn't matter. fact is, power loss from drive train is real be it fwd, rwd or awd.
and if you're confident that power loss should not be calculated based on a specific percentage, please do share how you managed the calculations for the 80hp. is it based on some kind of formula or pluck from the sky?
and we aren't debating about whether we should be looking at whp or bhp as per your reference to 1/4 mile traps.
we are debating if intake + exhaust + ecu reflash can fetch 410bhp (330whp) as per your calculations.
you are effectively saying that the 3 mods can help you gain 130bhp from the stock 280bhp.
i doubt my stock 560cc injectors and stock turbo can reach 410bhp on 1.5 bar boost.
as a point-of-reference,
UK Evo 8 MR FQ400 has the following specs, making 405bhp:
My 330whp/410bhp is just an example
Crank HP is quite irrelevant since it is not easy to obtain a reading(Engine Dyno)
Stock 560cc injector can support basic mod no issue
300-330whp is possible to be had from just Intake + ECU Flash(Increased Boost as well) + Exhaust + Walbro 255LPH Pump
This had been done for long long while
Here are some example:
301whp/283wft/lb on 91 octane/22psi or 1.5bar ish peak.This is on Mustang Dyno which is low reading(13% lower so Dynojet figure should be +/- 340whp/320wFT/LB)
Mod is 3" TBE(Downpipe,Cat Delete or High Flow Cat and Catback),ETS LICP,EVO IX Metal DV,255LPH Walbro and Samco Inlet Pipe with AEM 5" Intake/MAF Adapter,Open Source Flash
Source:
My mostly stock VIII at Buschur Racing - evolutionm.net
327whp/310wFT/LB on 94 octane/20.5psi or 1.4bar peak
Mod:Cobb AP, Megan o2 housing, some JDM no-name 3" downpipe,Megan Resonated Testpipe, HKS Hi-Power Catback,HKS RS intake,AMS lower intercooler piping,Injen UICP, Walboro 255 fuel pump
Source:
Evo IX MR on Cobb Tuning Stage 2 - 308whp/282wtq - evolutionm.net
305whp/278wFT/LB on 93octane/23psi or 1.6bar ish peak on low reading dyno so 10%-13% lower than Dynojet,Dynojet figure will be at 335whp/305wFT/LB
Mod: AEM Truboost Boost Controller,Injen Intake and IC Piping,Buschur Downpipe,Buschur Test Pipe,3" Catback Exhaust,Open Source Flash
Source:
Evo IX MR 305whp/279wtq - evolutionm.net
353whp/346wFT/LB on 26psi/1.8bar peak
Mod:TBE,ETS FMIC,Full Injen Intake including LICP and UICP,Walbro 255 and mbc
Source:
Stock turbo + full bolt ons. - evolutionm.net
331whp/345wFT/LB on 93 pump gas/25psi or 1.7bar peak
Mod: Walbro Fuel pump,Vishnu- V-band (TBE) Thermo wrapped the downpipe,Megan 02 Housing,Buschur ported exhaust manifold,ETS 3” FMIC,ETS LICP,Injen intake/UICP,Forge MBC @ 25-24 psi,Ivy tuned(Open Source)
Source:
Stock turbo, basic bolt-on's dyno - evolutionm.net
BTW,FQ400 setup by 2011 is pretty outdated already(Turbo,Cam Profile,Exhaust Manifold Design etc)