i never liked those SK04 and E05 turbos never were reliable
i wonder if it was the quality of the turbo or the programming

 

ya im also with you i remember hearing that the reliability of those turbos wasnt to hot

 

probably better off to stick with the tried and true K04 or the gt2871rs

 

If you're at sea level it will be fully spool by 3800rpms at the latest, lots of people claim to hit full spool by 3600rpms when running aggressive timing. This is using an ATP mani which is bigger in interior volume. Cause of this bigger volume is takes more for the exhaust gas pressures to build, thus more spool up time. If you use your stock mani or a ported and polished stock mani, you will see full spool at or near sea level by 3500rpms. This is great. Also don't think that at 3000rpms that you won't be making any power. The turbo is still spooling up, and if you see full spool by 3500rpms (~20psi) then at 3000rpms you will easily be spooling over 10psi. And a big turbo boosting at 10psi is like a k04 at 16psi (power wise). The reason I get full spool with this kit over 4000rpms is because I live at 5200ft above sea level. Air is much thinner up here. Thinner air is not as dense. Kind of the same reason you feel so much more power at 50deg over 100deg. The air is much denser, denser air will make more power. So for me up here it just takes this turbo that much more time to compress the air to make it to the density of what you see at sea level. More time = more lag (worse spool). Ceramic coating the exhaust side of the turbo, the exaust mani, and the testpipe (if you're using one) will also help a bit with spooling. Keeping the hot exhaust gases in the parts and not letting the heat escape under the hood will help exhaust gas pressures build sooner thus creating power sooner and reducing lag. As far as reliability goes, the E05 is a piece of crap that NO ONE should buy. I've seen and heard of too many going out. I have not heard any real problems with the SK04 but I am not a fan of Neuspeed (even though I have parts on my car from them), so I'm kind of wiery that they do the "work" on these sk04 turbos. On top of that the sk04 probably doesn't have any warranty for it anymore.

 

anyone know good DBC tuning for the GTRS's?

anyone know power numbers on the GT2X kits?