laggy tc78
#1
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laggy tc78
it seems like i have a little more lag compared to what other guys seem to say about their set ups. I used 3'' tubing to build my turbo hotside from the manifolds to the flange. Would this be the culprit? I know most use 2.5'' but had the flanges and piping laying around. MY setup is 5.3 with a z06 cam, tc78 journalbearing through a t56 and 8.8. starts spooling around 3500ish but makes full boost right around 4k. I also used 3'' tubing on my cold side. hotside is wrapped minus the turbo.
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yea i do need an update on my tune. running the one that was originally for my 6.0 that i blew up lol. runs damn good on it but i tweaked a few things with my hptuners. I plan on putting a tu1 in there so when i do that i ll redo my hotside since its coming off anyway. i figured i d left stuff on the table but didnt want to be without my car this summer.
#5
You can step down on the hot side piping size, and change your tune. Lean out the mixture before boost comes on to help generate extra heat for faster spool. Timing also plays a big part in spool, as can several other things such as gearing and what you're using to control your waste gate.