Loosing power

I have my 08 Tacoma SR5 4.0 V6 4x4 it has a 6" lift, sitting on 33" km2s and 4.56 gears. When driving on the highway with camping gear usually. Once it hit a hill the truck bogs down to 50mph and I can't get past that without constantly having the peddle to the floor. I feel like I should be getting more power but I'm not sure? This might be normal? Or what can I do to get more power?

 

Sounds like you are beginning to hit the limits of what the engine is capable of at inclines. After you start adding armor, sliders, plate or tube bumpers all around, you will be forced to give it a ton of skinny pedal to keep the momentum going. I hate to say it, but the only solution to your troubles is to go with the TRD/ Magnuson blower. There is only so much power these 4.0's can put out naturally before additional help is required. your 6 inch lift does not help either, as I'm sure there is a lot of heavy bracketry and additional crossmembers there to add weight that prior were not there.

 

That's what I was thinking too, it's just getting to heavy for that engine.. I'm going to be getting rid of the 6" lift hopefully by December I should have enough money in order to do a SAS. Not sure if that's going to take away any weight, might be close to the same if not more since it will be a Dana 44 and possibly 37s soo ya more weight..

I need a Cummins haha

 

Our truck is kinda heavy for the little D44. Maybe if you ran 35s and wheel it gently. Lots of people in the SAS BS thread would probably strongly recommend something else.

 

Slap some new spark plugs into that bitch

 

Could try a full exhaust redo headers,y pipe ,muffler try to pull out some more torque to help.

 

Supercharger

 

Supercharger is the general consensus.

Going SAS will keep you around the same weight if not add to it. You just need a blower plain and simple.

 

I have the same problem with mine. Only in Colorado with the trailer. I'm turning 35s on my truck. Supercharger is on the list.

 

I'm running a shell, skids, bolt on sliders with fill plates, and a bumper/winch and can still pull a 5k lb travel trailer over mountain passes at 60mph...granted the truck is in 2nd and 3rd gear doing that (265/75/16 with stock 3.73 gearing). Sure, more power would be nice but the truck is perfectly capable if the OP isn't afraid to make it work some.

 

Supercharge it, you won't regret it

 

Like Steve said. When is the last time that you replaced your spark plugs? What is your other maintenance like?

Guarantee that your fuel filter is saturated and robbing power, unless you have upgraded to an external filter.

 

It has all brand new spark plugs

 

Plugs are new, and I had a full engine decarb and injections cleaning done as well

 

Originally plan/thought was DANA 44, 4.56gears, arb air locker, chromoly, all that good stuff possibly running 37s.

That was just the initial thought I'll be meeting with letzrolloffroad and a couple other guys within the next couple weeks to really develop a plan.

 

Is this hill at high elevation?

 

Good for the injectors's flow percentages and atomization, but still doesn't address a saturated fuel filter.

 

cummins swap

 

cats clogged up

 

Doubt it.