MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: gti265 on November 26, 2010, 10:00:39 am

Title: diffrence between 100 cell and 200 cell cat
Post by: gti265 on November 26, 2010, 10:00:39 am

hello all,

whats the diffrence between these cats, other than the number of cells in them??

im looking at a blue flames exhaust and these are the options

thanks
tom

Title: Re: diffrence between 100 cell and 200 cell cat
Post by: PDT on November 26, 2010, 10:12:12 am

various densities have been used, with the most common now being 300 and 400 cells per square inch. All other dimensions being equal, converters with 100- or 200-cell densities offer improved air flow capacity, but reduced emissions control efficiency. In many cases, it's necessary to significantly lengthen a 100 cell converter to achieve the necessary levels of pollutant control. That additional length reduces flow capacity, so it's possible to end up with a 100-cell converter that does not flow as well as a 300-cell model.

Taken from a tech sheet i studied a few years ago about cats.

Title: Re: diffrence between 100 cell and 200 cell cat
Post by: gti265 on November 26, 2010, 10:20:39 am

ahh i see, so basicly to stay emmisions compliant i need to have a higher count of cells?

 is a 100 cell cat road legal or shall i go with 200 cell to be on the safe side??,

 i havent definatly decided if i will be going with blueflame or miltek yet.
thanks
tom

Title: Re: diffrence between 100 cell and 200 cell cat
Post by: PDT on November 26, 2010, 10:37:14 am

If the sizes of the cats are the same then a 100 cell cat will be less restrictive than a 200 cell cat but less efficient for its purpose so a 100 cell cat is often bigger or longer, which in turn can become more restrictive.


My advice would be to get a milltek, great quality, excellent backup from their dealers and unlike another manufacturer that you named they will send your parts out on time without purposely going bust and leaving their suppliers and customers out of pocket.





 

Title: Re: diffrence between 100 cell and 200 cell cat
Post by: NB07 on November 26, 2010, 11:23:37 am

my 100 cell blueflame passed the first MOT fine and its not restrictive at all, its a true 3 inch all the way and doesnt have the extra back box that milltek stick on theyres. it sounds mad on full throttle too  :happy2:



this vid says it all really...

 :grin:

Title: Re: diffrence between 100 cell and 200 cell cat
Post by: Top Cat on November 26, 2010, 12:27:33 pm

MY GTI has a blue flame, 200 cel cat. And it works fine.  :happy2:

Title: Re: diffrence between 100 cell and 200 cell cat
Post by: MAT ED30 on November 26, 2010, 01:22:46 pm

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi34.photobucket.com%2Falbums%2Fd122%2Fmat138l%2Fth_ed30tunnel.jpg&hash=4ad872f901dc3f99dcda44643fa831c5c7f76b22) (http://s34.photobucket.com/albums/d122/mat138l/?action=view&current=ed30tunnel.mp4)

mine passed it first mot with my blueflame system  :smiley:

Title: Re: diffrence between 100 cell and 200 cell cat
Post by: MAT ED30 on November 26, 2010, 01:34:25 pm

website is up and running
http://www.blueflameperformance.com/main_english/