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some clarification on upgrades
So i've been reading the forums heavily (i know how to use the search button) but because of conflicting info I've been reading I was hoping one of you seasoned members could give a little more input.
My rig is bone stock, and i've been deciding what the best course action is for upgrading. I want good power for light towing and 4x4ing, but not looking to max-out on performance since she is a DD. Plus I'm not made of money, and high end upgrades involve high end cash. The goal is to spend less then $1500 in upgrades and be able to justify it with gains in fuel economy. Here's what i'm planning.
Intake - I've already gone the route of the 6637 filter which is on her way.
Exhaust - We have emissions testing here, so i need to keep the cat and muffler or at least be able to swap it back in when i get tested. Currently she's running stock pipes. What are the gains of going with a 3" downpipe as opposed to just keeping the stock downpipe? Would it be a greater benefit to order a 3" downpipe and keep the rest of the stock system, or go with a 4" turbo back system (ie what are the realistic gains of a 4")?
Gauges - It looks like the scan gauges are the way to go here since they link up directly to your computer and use the vehicles current sensors. I'm thinking about going with a single AeroForce gauge and adding a pyrometer. Will this give me all the readings i need? Is there something better out there i should be looking into?
Tuner Chip - There seem to be alot of options out there for this, but i'm leaning towards a DP w/ selector switch. Is this the most bang for your buck or can you make due with less? Is there something better out there for our engine?
Most importantly I dont want to be spending money on things i dont need or could have been spent better elsewhere, so please let me know if there is anything else i should be looking into. Remember here that the goal is realistic HP gains while still keeping it a reliable vehicle.