Exhaust vs Cold Air Intake

There is no cam. I said cam gears. Our engines have 4 cams. The cam gears are specifically for the exhaust cams. It is the exhaust cam gears that replace the factory ones. They came with the APR X-1 kit.

It seems you overlooked the point where I stated that it is an auto and can not be done any lower. The cam gear increase scavenging across the whole rpm range. Not just the upper. They allow a small overlap of the intake and exhaust cams to aid in intake air push combustion exhaust out. Thus improving efficiency, cooling the combustion chamber, and increasing power, by way of scavenging. If you want more info on how that works, best bet is to study up on different types of cams. If you want a simplified version, go here: www.aprpower.com

The point of my reference was that not one part alone made his levels that high. They each contributed.

How can you ask, "what does that have to do with a daily driver with a air cleaner and a muffler change,"? His vehicle is his daily driver. With a few extra bolt-ons.

Did you even look where I directed you yet? I know you are curious. That is why i directed you to a source that has tons of data on you specific question.

Increase efficiency increase power. Simple. Keep your foot out of it, and you will also increase gas mileage, if you want to.

 

The build so far: ProEFI Pro128 EMS [] CP Pistons [] Pauter Rods [] Brain Crower Billet Knife Edged Crank [] ARP Head Studs [] Dual Valve Springs w/Ti Retainers [] Cometic Head Gaskets [] Aeromotive Stealth 340 LPH Fuel Pump [] Tomei Fuel Pressure Regulator [] Injector Dynamics 1000 cc Injectors [] Killer Glass Radiator Tube [] Top Fuel Oil Catch Can [] Torspd Custom Turbo Header [] Polydyn Ceramic Coated Header and Merge Collector [] Precision Turbo 6265 Journal Bearing [] TiAL BOV and Wastegate [] Greddy Profec B II Boost Controller [] Intake Manifold Spacer [] NST Waterpump Pulley [] Caltrac Traction Bars [] One Piece Driveshaft [] Tundra Racing 4x4 Rear Lowering Kit [] QA1 Adjustable Front Coilovers [] Spec Stage 3+ Clutch [] T56 Transmission in waiting as well as motor being sleeved by Darton. Last edited by Torspd; 02-21-2012 at 10:39 AM.


I would listen to this fellow! This is someone who has done his homework, you don't see PaceSetter header here.

 

CAI & replace the muffler

 

Put in a good muffler and a AFE filter. I really doubt you will notice much power from either, just better throttle response and a deeper tone.

I would steer away from a cat-back on a N/A truck, the exhaust seems to be already pretty free flowing (except for the muffler). If you ever go supercharged or turbocharged then I would definitely go for a much larger exhaust.

Here is my favorite muffler.....
http://www.jegs.com/p/Hooker-Headers/Hooker-Headers-Aero-Chamber-Mufflers/744863/10002/-1

I had them on two vehicles I owned in the past and my buddy put on on his V6 Ranger. Great tone, free flowing, and it will not cause drone on the highway.

 

yap best bang for the buck

 

the guy from urd had some pretty intresting dyno runs with all diiferent config. he stated that the secondary filter made absolutly no differance in or out it was the same hp either way. the only way to can hp would to change the box ie cai system.js

 

In the Exhaust vs Cold Air Intake option, I chose neither and went with a header instead for more low rpm performance.

 

I have a K&N intake filter and a Magnaflow muffler. Total cost for both parts was less than $100, I'm satisfied and my truck sounds great.

 

I hear ya.
After listening to the 2.7 muffler youtubes, I ordered a Magnaflow. Love that sound.

 

if you are going for sound, cant go wrong with magnaflow. the CAI is cool, but not for off road. I know yall 2nd gens cant do the deck plate mod, but I plan on taking out my CAI and doing the deck plate mod not too far down the road from now. is the TRD intake box water tight?

 

That's the drawback with auto dyno runs. They're highly informative if you're racing, but totally useless for regular everyday drivers. I could drive for 6 months without ever coming close to 3,400 rpm. I'll be doing a baseline 2.7 dyno soon to compare changes from future mods, and it'll start at 1,500.

 

Define water tight


1st response would be "no" due to it needing air

Second response being, "no" due to bolts going through lid and bottom.

"Resistant" would be closer, meaning its ok in rain.


And what's wrong with an intake offroad?

There's more than 1 type/brand of filter to use, plus prefilter socks

 

So, what is the best options here not only for sound, but for fuel economy? Performance gains are great, but I'm curious as to what is going to boost the fuel econ the most as well

 

Fuel economy..... keep ur foot light.


I get the same mpg now with blower, intake, headers, y pipe, 3" exhaust as I did without.

 

Can people stop reviving old threads already the guy chose already if you read it all and the op has not been on since November so let the thread fade away

 

I know you have already installed the exhaust but for anyone else wanting to know.... The exhaust is a better first mod because a CAI is simply pushing denser air into the engine. The way that most modern day car companys build their vehicles today is with the breather pulling air from the fender well. This is a simple type of CAI as the feneder well is a high pressure zone and selected based on performance aspects. Im sure any after market kit would boost the performance but to get the biggest change an exhaust is the way to go..... IMHO

 

. Do u think one should replace the entire exhaust or just the muffler, and why out of curiosity?

 

Tough call. Im in the same boat. I think Im just getting a cat back with a drop in filter.

 

Compare the stock pipe diameter to a catback.. I'm curious and don't have my stock setup anymore.

Also these trucks have been dynoed with stock filters, a k&n, no air filter, then no air filter, and the carbon filter removed..... No HP increase in any of those configurations over stock. The k&n actually lost HP.

The restriction is the housing/ducting/silencers/baffles.

 

I like the magnaflow off road exhaust. Im sure it makes some power and weighs a lot less, since it only has a resonator or muffler vs stock resonator and muffler.