View Full Version : Exhaust sizing, what to go and where to go?
hey looking to get an exhaust, probably just a cat back, what size would be recommended to go as i only have a Short ram intake, and am planning on gettin a VAFC, i want the vtec to sound awsome in the high rev range but dont want that farting sound that alot of NA's get, any help?
car is a vtir prelude,
Im located in Melb, anyone have any suggestions on where to go to get the exhaust done, at a good price
thanks
shecomb
26-10-2006, 04:03 PM
2.25in is the go for N/A
Filo_xtc01
26-10-2006, 04:39 PM
Yea, if your not gonna go any further with it then 2.25" will be fine.
but will i notice any difference and how will it sound? 2.25 just seems so small, what is the stock size of the exhaust? for a gen 4 jdm vtir
thanks
CUL8R
26-10-2006, 06:53 PM
stock i believe is 2"
2.25 IS PLENTY for ur planned mods, id u wish to go 2.5" ull lose a bit down low, i know from experiance.
this is no skyline with a t51 that needs a big 4" exhaust, this is a 2.2l prelude with nothing but and intake and exhaust, 2.25 is enough, 2.5 is MAX
MRH-22A
26-10-2006, 09:26 PM
i think stock is 2.25... isnt it?
ye wasnt planning on goin any bigger then 2.5, 2.25 is sounding like a good option, dont no weather to go a muffler with a tip or a cannon with a crazy angle, any suggestions?
m3ntAL_l2
26-10-2006, 10:25 PM
im about to put in a head + 2.5" cat back and a 3" muffler. hope that all go good lol.
Filo_xtc01
27-10-2006, 09:49 AM
Dont put a cannon on a lude, not with that angle thing that all the nissans have. As said above this is a 2.2 prelude not a drift car.
I have a 2.5" from the flex pipe back. Only reasion being is that I plan to go further with my mods and dont want to restrict myself later on.
94vtirozguy
31-10-2006, 07:07 PM
stock is 1.7" ID on a 4th gen VTIR
buzz_civic
01-11-2006, 05:54 PM
I have a Vtir with extractors and from the extractors to the first muffler is 2.25" then from there back is 2" and it read 88db... but that was at 5500 RPM
Nightrider
01-11-2006, 07:36 PM
2.5 all the way.
MRH-22A
07-11-2006, 09:55 PM
^^i agree
krogoth
07-11-2006, 10:49 PM
2.5 all the way.
2.5 is too much, too noisy, loss of backpressure
and possible loss of down low power, car will feel more sluggish
Filo_xtc01
08-11-2006, 08:53 AM
2.5 is too much, too noisy, loss of backpressure
and possible loss of down low power, car will feel more sluggish
What are you on about? I have 2.5 from the flex back, and as long as you have a good muffler and resonator the noise will be fine.
Loss of back pressure? You dont want back pressure, you want exhaust velocity...
I noticed NO loss in power down low at all. It didn't feel sluggish whatsoever. When i get my dyno graph i'll post it up.
Have you driven a lude with a 2.5" exhaust?
krogoth
08-11-2006, 10:51 AM
No i havent, but i assume that 2.5 is fine for turbo cars
although heez only getting 2.5 from the cat back, so i guess thats fine
and every1 has a different definition for noisy, i think my stock piping and a fart cannon is noisy, lol
2.5 all the way is definetley overkill
94vtirozguy
08-11-2006, 02:05 PM
2.5" is not even close to overkill for performance. The size you choose depends on the mods you will do for the car.
2.5" is noisier comparing the same muffler / header and resonators.
ekjmp
09-11-2006, 08:43 AM
i got 2.25" on my lude which produces a great note and power. perosnally id go 4 that but definantly no bigger than 2.5" :S
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