magnaflow exhaust
Newbie
Joined: Sep 2006
Posts: 3
Likes: 0
From: Texas
Don't listen too much to the catalytic issue. Most people it is a monetary decision, not a HP decision.
Here is some food for thought:
The Oct '06 issue of Import Tuner (though this mag isn't really known for its articles) did a tech feature on catalytics. The test vechile was a Honda Civic. Now these are clean vehicles, and should have the most restrictive catalytic around. Now remember with aftermarket catalytics, there are some made for OBD I and some for OBD II. If you go aftermarket on a cat, remember to get the OBD II.
Initial dyno showed power at 147/105.
The second dyno with an OBD II Magnaflow Ceramic Core Catalyic (not recommended for boosted applications) put out 150/107.
Next was an OBD II Magnaflow Metallic Core Catalytic (recommended for the rich conditions that boosted applications have) and it put out 151/107. Not much gain, but best for boost.
The last was a test pipe, this number came out to be 152/108.
So, thinking about that, the test pipe only netted 1 extra horsepower and 1 extra lb-ft of torque. Personally I'd spend the extra money and not have to worry about swapping catalytics for inspection. Then again, I'm in Houston, TX, and we have the emissions testing.
I am different though, I don't want an ultra loud car, I like the stealth approach, so a test pipe is something I would not use.
Here is some food for thought:
The Oct '06 issue of Import Tuner (though this mag isn't really known for its articles) did a tech feature on catalytics. The test vechile was a Honda Civic. Now these are clean vehicles, and should have the most restrictive catalytic around. Now remember with aftermarket catalytics, there are some made for OBD I and some for OBD II. If you go aftermarket on a cat, remember to get the OBD II.
Initial dyno showed power at 147/105.
The second dyno with an OBD II Magnaflow Ceramic Core Catalyic (not recommended for boosted applications) put out 150/107.
Next was an OBD II Magnaflow Metallic Core Catalytic (recommended for the rich conditions that boosted applications have) and it put out 151/107. Not much gain, but best for boost.
The last was a test pipe, this number came out to be 152/108.
So, thinking about that, the test pipe only netted 1 extra horsepower and 1 extra lb-ft of torque. Personally I'd spend the extra money and not have to worry about swapping catalytics for inspection. Then again, I'm in Houston, TX, and we have the emissions testing.
I am different though, I don't want an ultra loud car, I like the stealth approach, so a test pipe is something I would not use.
Thread Starter
Newbie
Joined: Aug 2006
Posts: 62
Likes: 0
From: Burney in NORCAL
Ya i dont want it loud either so I'll just go with a dp. I decide to get the dc sports downpipe that eliminates the cat, will this fit with the magnaflow you think? then i will be done with this thread. thank you.
Last edited by evolrobert; Sep 14, 2006 at 10:21 PM.
