Join Date: Feb 2017
Location: Ohio North Coast of America
None are much.
You are talking only a few HP here and there on the gas engines and no all the totals do not add up and often the learn feature can negate the gain unless the programmer opens it up for the other items.
And exhaust and intake can help in mid to upper RPM but again you are only speaking about a few HP.
Now I have not seen it done yet but the Diesel with a programmer and Turbo could see some major gains if the aftermarket offers tuning. Turbo engines respond much to tuning and gains are large.
There are few real performance parts for these engines and so real gains would be expensive and difficult to get. In time we may see more since the Cadillac and Camaro also use the same engine.
There is always NOS but there is also the risk of damage if you don't get it right.
Right now a tuner is about the best you can get and add an exhaust if the learn feature is turned off. Even then the gains are small.
It is not like the old days where for a under $1000 dollars you can add a couple 50-200 HP unless you have a turbo.
The real gain here is the Superchargers that are offered. Mallets appears well sorted and combine it with the exhaust it will give the best bang but like everything else how fast you want to go comes down to how much you want to spend.
Last edited by hyperv6; 04-12-2017 at 03:38 PM.