im thinking about a megan how are peoples feelings about those

 

Depends on goals and budget, do you want to keep a cat? Do you want to sped alot of sheckles? Just don't buy the HKS. Go with a divorced wastegate or a bellmouth. I've had a helix and a stromung. I opted for the stromung because I wanted to keep a cat to negate the "fuzz" factor.

 

Homework is a biach, but it'll save you from making poor choices, hock that piece of **** on ebay asap, or see if you can cancel your order.

 

Whats the difference between a divorced wastegate downpipe and bellmouth and which is more beneficial?

 

The Cat is a CARB certified OEM replacement, the DP is still illegal. As was said, to be legal your OEM cats must be damaged, non working, or over 8 years old. You also must retain the same number of original cats AND piping diameter, in our case 2 (or 3 if you count those of us with an uppipe cat).

Here's the part of that blurb you left out
Thus, still illegal. I'm willing to bet he swapped out the old metal substrate cat he used to use for the magnaflow(carsound) CARB certified one, I doubt Rich would spend the money and go through the hassle of getting something CARB certified. My previous V6 accord was the guinea pig for the Comptech CARB certification for the V6 accord supercharger, and BOY was that a pain in the ****, and Comptech moves a hell of a lot faster than Rich does.

I love Rich's workmanship, and work ethic, but his prices leave some to be desired as does the performance. I've gone through a maddad V1 catted and V2 catted and had enough headaches to last a lifetime. With the V1 I ran the OTS stg2 cobb map and it was ok. I upgraded to the V2 and halfback(one of the first) then I upgraded to a VF34 and decided it was protune time. Mike had a hell of a time tuning it(read 8 hours on the dyno and still only 232hp out of a VF34). Anything over 5k rpms the exhaust was so turbulent he couldn't get a stable AFR reading from the wideband and the motor was acting like it was restricted. I ended up ditching the stock axle back and going to a borla. Better but still awful, up to 238whp on the heartbreaker. I then went to a helix bellmouth, readings all the way to redline and the engine came alive.. a hair over 250whp.. I'm not sure if its the cat design or how the divorced pipe bypasses the cat, but the V2 was not a happy camper with a VF34 blowing through it. Stg 2 it was ok, but with something blowing a bit harder I'd say to stay away.


As for the thread, bellmouth, divorced, 6 one way half dozen the other. If you don't want stinky at stoplight get a catted one, running 10.5:1 at high RPMs is more than the cat can handle and you'll still be stinky running WOT.

As for me, I'm content with the Helix Catted, it does what its supposed to do.

 

Ebay Ftw

 

The HKS DP appears to be ok with EWG setups.

 

then its time for you to try a different kind =]

 

perrin makes the best IMO

 

Go with the Perrin

 

Write down all the names and put them in a hat, then draw.


Or visit some subaru meets and pick the one that sounds best to you.


Or talk to your local tuner and find out what they work with best.