Retune after turbo change
Thread Starter
Staging Lane
Joined: Mar 2009
Posts: 94
Likes: 0
From: Perth Australia
Retune after turbo change Hi, I have been running a gt4294 on my 408 which is too small for the engine and am going to upgrade the turbo soon, Everything else being exactly the same apart from the turbo will I need to retune this thing? The gt42 choked the hell of my engine on the dyno. GT4780 is what I am looking at at the moment.
Thread Starter
Staging Lane
Joined: Mar 2009
Posts: 94
Likes: 0
From: Perth Australia
Yeah ok thought I would but was hoping to get away with running low boost until I had the facilities to get tuned again. Might hold off on the turbo swap. Will running high pre turbine back pressure cause any real dramas for a street strip car other than choke the power
Anytime you make any changes to airflow or basically anything it will need some sort of retune. With the turbo if your tune was spot on most likely will need just some minor tweaking of the ve table but will not be much
