i live in Texas where its hot most the time... and that hurts our trucks...

anyway, of these 2 options... which would I see the most gains n the Dyno and at the track??

Option #1. Heat Exchanger + EFan/Pump

or

Option #2. LT headers + High Flow Cats + Catback


im gonna eventually do all of this, but cant afford it all at once.... which option should be next in line?

 

the full exhaust will def. be sweet...that is my next mod..anytime your making extra boost...you will gain power when you make it flow better (Exhaust) not to mention the awesome sound you will get..BUT then again whenever you are making more boost you are making more heat! i live in florida so i can relate the cooling mods will be very helpful..but i think you should pick up more power with the headers, and defenetly some trq.

 

go the cooling way. EFAN and heat exchanger. Forget the water pump, they've been proven to be garbage.

 

I'd go with the exhaust first. You are in texas and it's gonna be hot reguardless. The fan and exchanger will help more so at the track if anything. The exhaust will be a better bang for the buck as far as looks/sound/performance.

The water pump is suspect at this point. It was the thing to do back in the day but now the question is out. Mine will stay in untill it fails, then i have a nice stock one to put back in.