time to modify
1-6637 mod. That's an intake mod that gets rid of the air box that is prone to leaking.
2-A 4" turbo back exhaust. You will need a 3" downpipe, and some modification to the firewall with a board and hammer will likely be necessary to install it.
3-A tuner from either DP Tuner, Tony Wildman or Power Hungary Performance.
4-A transgo tugger shift kit for extended life of the tranny along with an aftermarket cooler will likely be a good investment especially if you do any towing/hauling.
5-A set of gauges will likely be in order especially if you do any towing too.
This is in order of importance in my opinion. The first 2 mods will show almost no gain in power or economy. A little perhaps, but not much. What they do offer is that it sets you up for #3 on the list! That's the one that will show the most bang for the buck. But to really take advantage of #3, you really need to do #'s 1 and 2. 4 and 5 are just good things to have to help extend the life of the tranny, and monitor the EGT's, turbo boost, and tranny temp.






