I am trying to make my exhaust a little louder. I want to ditch the 4 cats and put 2 high flows and put some headers on. That should do the job of making my Flomaster 40 series louder, right?

What is the best brand of high-flows cats? Best brand of headers?

 

Gotta go with the dynatechs...they come with Magnaflow cats. They will make your system a good bit louder. Plus, they have that "headers" sound. It's a good-sounding system.

 

what does evrey1 else think of the dynatechs. I dont need a whole set. I just want a set of headers and two high flow cats

 

any1

 

The Dynatech "set" is just the headers and Hi-flow cats (comes with a Y pipe).

I just had them installed on Monday and I love the sound. I have a Borla cat back, so the set is not as loud on my truck as it would be with Flowmasters.

The initial startup is a little louder. Idle has more of a rumble sound, but doesnt really seam any louder. It sounds so damn good when Im driving, anywhere from cruising to WOT. I havnt even turned on my stereo since I got the truck back. One of these days Ill get a few soundclips.

I havnt had a dyno, but it feels like it has a little more power then before, even with it being as hot as its been out.

Only wish the manifold bolts wouldnt have been rusted as they were so I could have installed them myself.

 

In MA I know there are too many laws. Will it be legal if i get the dynatech "set" and have a local shop install them? How much louder will it make my truck? Should I also switch to the super 40 series? Will I lose low end power?

 

NOTE: These products are intended for racing and off-road applications.
Not legal for sale or use in the state of California, nor in states which have
adoptedCalifornia emission standards.


The above note is copied from Dynatechs website.

02 F150 Super Crew Lariat FX4 White & Silver
5.4 /w Roush Cold Air Intake & K&N filter
3.55 LS
Flowmaster Cat Back
JBA Silver Cat4ward Headers
Rancho RSX's
Rancho Steering Stablizer
Hellwig Rear Anti Sway Bar
Lightning Tails
Outland Sport Bumper Guard
Hella 550's
Silverstars
Superchips 9100 Micro Tuner c/o Troyer Performance
Underdrive Pullies c/o Troyer Performance
Mag-Hytec Trans Pan & Rear Cover

 

I think MA adopted CA emissions, which means you have a visual test as well as a snniffer if I'm not mistaken.

If so, you'll fail the visual with long-tubes since you will be losing the pre-cats.

Most shops in CA won't touch cats unless they aer bad. May be the same for MA as well...you'll need a good relationship with the shop so that they know you won't turn them in, as it's a federal crime.