'New car' = WRX 30 in 2026   remove engine & drop off to mechanic, they disassembled & heads have returned from testing, all good, waiting reassemble   then most recently   "Old" car (Avenger = 50 in 2026)    'everything' Diff pinion seal nut & bolt check, wheel bearings brakes trans seal + screen, tran mount & bushes, swaybar link & bushes Struts strut bushes rocker seal carbs    

I can't remember seen any auto sti making 300whp on PBMS dyno, any hub dyno will read higher. I would say that more important that places are the people, in this case the tuner. On companies where the tuner is only an employee (not the owner that has always been the guy tuning at that company, for example), you can go to the same company and get 3 different results, because there was 3 different tuners over the years. The experience that someone had with a tune here at PBMS 3 years ago, may be very different to what you get now, because is a different tuner, same company same dyno different result. Just to keep an eye on that.

Haha I'm not trying to be stuck on a number. What I want is a TRUE 300whp.   I don't want a 280whp feeling that reads 300whp. I want a low reading dyno that would say 300whp

November shows. Cold is coming Thursday for Thanksgiving and looks like it is going to stick around!   Some pretty col cars in here including some $MM Ferraris.    Nov 2025

SAS too but they're in Christchurch.   There aren't heaps of tuners and you've basically listed them.   EDIT: Still stuck on that 300whp number eh. Make sure whoever does the tune is happy to fudge the TCF to get you a number that makes you happy.