What header and y pipe provide the most gains?

Hello, I am getting ready to make some exhaust and fuel mods after my dyno session last week. The truck is supercharged with the trd cat back exhaust. It pulls 246 hp/285tq.

I want to purchase the best performing exhaust possible to make the largest gains. I do not care if they are street legal.

Can anyone make some recommendations?

 

URD Spec U Exhaust and Headers and True Cold air intake. Probably net you the highest gains. Could add the MAF calibrator if you don't mind a little splicing near the ECU for another little bump. All of that will probably give you another 40 hp or more.

Also add the URD 2.85 pulley for another 15-20 hp or so and really wakes up the SC

 

What are you using to tune your system?

 

I also plan to do a e85 conversion, I am told that should give me gains as well.

 

I'm not tuned yet. Waiting on URD to come out with UCON EMS for 2012+

 

Why not go with a stand alone

 

Urd makes the map ecu3. Is this not good enough?

 

I read about the ucon ems. It required for the pulley I want to run, 2.55". I was told by tuning guys that we could just put a haltech in there and I would be able to tune well. I would also be able to run e85

 

URD only sells the Map-Ecu3. Map-Ecu makes it.

A lot of people prefer plug n play, as apposed to a wire-in unit.

If you plan on getting the Haltech, get the Elite series.