Originally Posted by
ma_RC_el
I thought the 35XX EFRA series of pipes were ment for pipes under 09 EFRA rules.
I thaught so too, thats why i have a 3501 on order and coming. i hope its just a number change, or this one is the thirsty equivelant to the 2630, as the 3501 was supposed to be the 3 chamber one for the 2601.