lookin for some ideas on exhuast... should I go for 2.25" on my Sohc D y8 or smaller, what is the max. size I can go without losing h/p. Am I going to gain hp and lose torque? Any help would be appreaciated. Thank you guys.

 

i have 2.5 custom system on my tired, smoking A6, while i did not loose any low end, along with a header and a intake it did help the high end power. it is just incredibly loud at all engine speeds. having a straight-through muffler accentuates that. a 2.25 system with a resonator, a catalytic converter ( i do not care what people say, a street car should have one, both for emission and dB control) and a good non-chambered muffler will do fine.
Stan

 

i have a 2.25 on my y8 works real good. its not loud and annoying but it helps alot when i open up the motor. i have stock header on it rite now cuz im saving up for a turbo kit. 2.25 should be good for you specially for a street car. cops love to pick on guys wit hondas and loud exhausts

 

I have a Greddy EVO, which is ~2.35. No issues with only intake.

 

2" will get the job done wit simple i/h/e, but 2.25" would be better.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kommon_sense &raquo;</TD></TR><TR><TD CLASS="quote">2" will get the job done wit simple i/h/e, but 2.25" would be better.</TD></TR></TABLE>

Um no.. you do not want 2 inch on a built motor or maybe not even streetable come on lets use '' common sense ''

 

thank you for all the info guys....2.25 catback and downpipe is ceramic coated.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USDMDC2 &raquo;</TD></TR><TR><TD CLASS="quote">Um no.. you do not want 2 inch on a built motor or maybe not even streetable come on lets use '' common sense '' </TD></TR></TABLE>

I did... he never said that the motor was built... 2" is more than enough to handle a y8 w/bolt-ons.

 

this is a stock engine with a turbo upgrade only 6-7 psi boost.