warr fp green 20g lt
I am having problems with my car I have 390whp and 355 torque on a dyno jet tuned with c16 race gas and 25 psi. My mods are buschur turbo back 3" exhaust with straight pipe, buschur ported 02 housing and exhaust manifold, buschur ported intake manifold and throttle body 65mm,buschur 20glt ported, buschur filter, 750cc injectors, 255 walbro fuel pump,272 intake and exhaust camshafts gsc,ams lower intercooler pipe, turbo xs front mount,evo 9 metal blowoff valve recurculated,lighter fly wheel and act clutch.
My problem is I took my car to the track and decided to see what it dose and all I could manage was a 12.6 with a sorry 60 ft 1.89 60 ft at 112.37 mph, I believe its due to my car not holding boost in 1 to 3rd gear boost spikes to 25 or 26psi but would drop right away to 20 or 19 psi way before redline so in a sense I was boosting 20 psi in 1st to 3rd gear. The only gear that holds 25 psi solid is 4th.
I believe it might be the blowoff valve leaking because I barrowed a turbo smart dual vent blowoff valve from a friend but i recurcluared it. I used to be able to hold at least 24psi before with the evo 9 metal blowoff valve.
I guess my questionion is would it be normal to loose boost so fast in those gears with this turbo and why would it hold boost in 4th gear. I especialy think its weird a guy had almost the same setup as me same turbo and he said he is able to hold at least 24 psi in every gear annd his horspower was 386 whp 380 torque on a dyno jet same tuner as me tuning technologies and he was rining an 11.8 with a 1.8 60 foot at 118 mph.