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hi guys
so i have a question. 3 weeks ago i have ordered a 2,25" high flow kat but now i have checked that the outer diameter is almost 54 mm = 2,1259" (2,25 = 57,15 mm) but now i have the chance to exchange against a 2,5" so what would you do? My second question is can anybody tell me if the 2,25 really is a high flow cat (100 cpsi?)?
thanks for your help and sorry for my english

here are some pics the first two pics are from the 2,25 and the last is from the 2,5.

Infos about my car:
K8 stock already a exhaust from supersport and if i have the cat i build a custom cat back system. In future mybe i swap with an klde. If i insert the 2,5" loose i torque or HP with my setup?

<img src="http://mitglied.lycos.de/tntbbk/kat/SANY4009.jpg" alt=" - " />
<img src="http://mitglied.lycos.de/tntbbk/kat/SANY4017.jpg" alt=" - " />

<img src="http://mitglied.lycos.de/tntbbk/kat/car ... ed_640.jpg" alt=" - " />

both are from magnaflow (http://www.carsound.com or [url=http://www.magnaflow.com)]www.magnaflow.com)[/url]
i thank you very much

That cat should be fine for both a KLDE, KLZE, or K8. I wouldn't go larger unless you went over 300 HP.