Hi Guys.. got my Car Tuned today... Pretty pleased.. just curious as to why i start loosing boost towards high rpm.
Originally it was tuned for about 13psi or 13.5psi.. but the boost curve @ high rpm was tapering off low so we just got it tuned @ 11psi. At 11psi we lost only about 5-6HP which is not really much and made the curve smoother n more linear, So Avg boost is better near the top.
Today was 33'C so i don't know if i could of got a higher reading if it was a colder day.
So yeh what u guys reckons.. why it's loosing boost @ high rpm.. leaks, setup, etc..???
Ta
-SeS
P.S. mods R (3" Turbo back 5"Tip & HiFlow Cat, HD clutch, Hks Pod, Iridium Plugs gapped 0.65, Power FC, HKS EVC 5, CAI n DIY Pod Box , FMIC, GFB BOV, Bosch 910 Pump and everything else stock.. power mod wise.