pinoyk20

hi guys! im planing on doing a 2.5inch piping up to resonator then steped to 3inch piping after resonator up to the bumper. with out any muffler aka JDM circuit car exhaust. then the exhaust will have a megaphone style on the end... what do you guys think of it? will i gain power ir lose power??? my friend is a good exhaust fabricator it will be a full stainless piping up to the megaphone..... he say it gonna be loud but it will sound good and make power. cause of the freeflow. my engine is a f20c ap1.

mods i have

emange ultimate
spoon throtle body
j's racing header
j's racing tsuchinoko intake
trust/greddy oilcooler
berk testpipe

also planing on adding aftermarket coils.

EVAN&MONICA

Why keep the resonator if your doing no muffler?

s2sik

^ yeah no use for a resonator if you are already going balls out with no muffler.

things to consider is "freeflow" and staying n/a its important to keep a balance between flow and back pressure is necessary otherwise you will lose power on the low end/throttle response though you probably will gain power up top.

and if you dd your car then god bless you, invest in some ear plugs

Back S2k

why woudl you do that? Y not just a 2.75 straight pipe from the header all the way back with no resonator and muffler. this should gain you the most power. I wouldnt even have it come out to the bumper I would make a turndown for it right around the diff. Warning this will be loud as #### and it will not sound too good unlike ur friend said.

pinoyk20

my friend said the resonator will be the one to control the tone of the sound. so it wont sound that loud it will sound deep. plus it wiill control the flow of the exhaust so i wont lose low end power thats y its going to be a stepped exhaust 2.5 testpipe and resonator then ater it will step up to 3 inch with a megaphone style end. to build good backpressure.

we dont have 2.75mm diameter of stainless piping available here in the philippines only 2.5 and 3 inch

the goog thing here is that we dont have restrictions on exhaust on cars. some people here even drive around with an side exit exhaust on their cars. eheheh

pinoyk20

http://i224.photobucket.com/albums/dd105/p...0/n1mufller.jpg


http://i224.photobucket.com/albums/d...noyk20/n12.jpg

these are samples of the kind/style exhaust that ill be using

my friend is the one who made it. thanks!

camuman

[QUOTE=pinoyk20,Feb 5 2009, 11:31 AM] my friend said the resonator will be the one to control the tone of the sound. so it wont sound that loud it will sound deep. plus it wiill control the flow of the exhaust so i wont lose low end power thats y its going to be a stepped exhaust 2.5 testpipe and resonator then ater it will step up to 3 inch with a megaphone style end. to build good backpressure.

we dont have 2.75mm diameter of stainless piping available here in the philippines only 2.5 and 3 inch

the goog thing here is that we dont have restrictions on exhaust on cars. some people here even drive around with an side exit exhaust on their cars. eheheh

pinoyk20

oh ok. but the car wont be a daily car. it will be a weekend fun and track car. we have done it on b series engines and k series engines and we gained good power

Back S2k

wtf are you talking about "2.5 max" it has been prooven over and over and over and over and over that a single 2.75" exhaust nets the most power?

Js S2k

100% 2.75 is 70mm, proven by basically every company out that it makes the most power on our lil 4 banger