4.0 TRD Supercharger + URD pulley??????

I had a TRD supercharger installed on my 09 4.0 V6 when I purchased it, and they reflashed the CPU. I plan on adding a URD pulley once the warranty is up. Has anyone done this? To change the tune, do they just reflash the CPU or do I need to purchase an after market computer? What sort of HP / torque numbers did you get after the swap?

Thanks!

 

re flash or you can do an apr x1 ecu.supposedly 304 hp net with the reflash but wel see when mine gets here and i stick it on the dyno.

 

You don't need to change anything if you add the 2.85 pulley. I've got the apr one that looks a stock pulley on my truck.

 

CPU? You mean ECU?

 

CPU...ECU...C3P0...Whatever it takes!

 

I thought 304 was just with the TRD supercharger. The URD pulley is suppose to get you another 60+ horsepower from what I have read.

What is the APR One? Can you guys give me a link?

 

If you have a 2009 or later, there is no APR X-1 available. Which is a shame. It kicks ass.

The connectors at the ECU are different 2009 & up.

 

You don't get 60hp from just a pulley change. You get about 20rwhp. Urd sells the apr 2.85 pulley.

 

some have run the pulley without any additional tuning.

it really depends on your intake setup. I have seen some trucks run super lean on the top end with certain intakes ( K&N for one)

many have not had any troubles

I would def tune for it if possible. you cannot reflash again, you will need some sort of additional tuning hardware

this reminds me, I need to put my pulley on.

Justin

 

Does the stock belt fit fine?no problems?

 

Yes. Plenty of room on the tensioner with such a small difference in diameter.....

 

What about with a ARB snorkel? And what about at 5k ft elevation? My truck sc was installed at sea level but nowni live in denver co. Hmmmm i want a 2.85 pulley but i dont want to run lean.

 

No additional tuning needed after the install for the 2.85 pulley. Here is my thread on the install:
URD 2.85 stealth supercharger pulley install

 

I too have the URD 2.85 pully and truck runs just fine. Just do the swap and that's it.