Exhaust, Air Intake, etc

[YANKEES31]

I am contimplating getting an exhaust system, throttle body spacer, air intake, and PCM from PCMfor less.

I have a 2007 and wanted to know if these are worth getting. And which ones...I see most of the exhausts and intakes are for the 3.5L

I want to get a little more power and possibly some better gas mileage.

My driving is pretty much 100% highway...I go up and down the Gareden State Parkway in cruise control at 79mph and am getting about 12mpg. I didn't buy the truck for fuel economy but I do see people her say they are getting in upper teens.

thanks

[6pack]

Yea, when I drive full highway, I get around 18mpg. 12 seems awefully low.

The Gibson exhaust I got for my 07 was listed for an 06. I had no install problems. I would say there is no difference between the 06 and 07 for a cat-back system. Not sure about the other stuff though.

I'm waiting for K&N to come out with the 07 kit, from what I've read, there is a difference for the aintake between the 06 and 07.

I don't think I would get the throttle body spacer. Everything I've read suggest they don't do anything, but I've never had one.

The pcm tune is worth it.

Good luck with your upgrades!

[tomp]

Volant CAI is the only intake choice for me

Either Volant or Corsa exhaust

NO on the throttle body spacer! Doesn't make sense to open up the intake & exhaust for more flow, only to then restrict it down with the spacer

[YANKEES31]

I checked the numbers I went 242 miles and filled up with 20.5 gallons.

I did change the tires and wheels on the truck though. I went from the stock 18's to MotoMetal 18's with 33x12.5 tires though.

Also to those that did these mods..are the results noticable

[6pack]

My results are noticeable. It's not a huge difference, but worth it to me.

And my mileage numbers are correct also. I check my mileage on every tankfull and 18 is a rough average over the last couple of months (for highway driving, my city driving is around 16mpg). I fill up about once a week. And I drive 75-80 mph on the highway. I was getting about 17 on the highway but it went up about 1 mpg after I had the pcm tuned.

I have the stock 33's and adventure package. I would imagine with the stock 32's and lower stance of the non-adventure package I would eek out another mile per gallon or two. So I don't think someone claiming 20mpg would be unrealistic. Steve, you should try a pcmforless tune, you to could then enjoy the many benefits!