How loud are open downpipes..?
07-29-2004, 12:26 PM
#1
3.0 BAR
Thread Starter
Join Date: May 2003
Posts: 6,279
How loud are open downpipes..?
ok so i am broke and prob.ly don`t have enough $ to get my rear section done befor the next drag meet.
so i am thinking may be i can take out the gasket right after the downpipe and run it like that....
how loud could it get?...as loud as NA motors?
so i am thinking may be i can take out the gasket right after the downpipe and run it like that....
how loud could it get?...as loud as NA motors?
07-29-2004, 12:37 PM
#3
3.0 BAR
Join Date: Jun 2003
Posts: 3,975
Re:How loud are open downpipes..?
Donald, so you just have a stock cat/exhaust? and that's what you're worried about?
If you can you make it Friday to Julio's, you can make a test pipe ( i have a 3 bolt flange you can have) and use your stock exhaust, or get a $10-20 muffler and use that 2 bolt flange you have. That way at the track you will have the required muffler. It will be connected to your downpipe.
If you can you make it Friday to Julio's, you can make a test pipe ( i have a 3 bolt flange you can have) and use your stock exhaust, or get a $10-20 muffler and use that 2 bolt flange you have. That way at the track you will have the required muffler. It will be connected to your downpipe.
07-29-2004, 12:46 PM
#5
0.5 BAR
Join Date: Jun 2004
Posts: 140
Re:How loud are open downpipes..?
i ran open downpipe for a couple days before i got my flex pipe on, and it was pretty obscene. however, i was able to drive by cops very very gingerly and not get pulled over.
it was fun to scare the crap out of other drivers though. the car sounded like total *** out of boost, but once the turbo spooled it supposedly sounded pretty evil
it was fun to scare the crap out of other drivers though. the car sounded like total *** out of boost, but once the turbo spooled it supposedly sounded pretty evil
07-29-2004, 02:31 PM
#6
1.5 BAR
Join Date: Jul 2004
Posts: 1,437
Re:How loud are open downpipes..?
How would an open down pipe compair (noise level) to say:
N/A ZC w/ 4-2-1 headers w/ 2.25" exhuast straigh pipe (down under gas tank and straigh out to a fat staight through ---- can.
that ---- was loud as hell and i would think that an open dp would be even quiter than that...
im going to prolly be running 2.5" all the way back and then be putting on some really good flowing muffler...
i want to hear my turbo spool up...
nathan
N/A ZC w/ 4-2-1 headers w/ 2.25" exhuast straigh pipe (down under gas tank and straigh out to a fat staight through ---- can.
that ---- was loud as hell and i would think that an open dp would be even quiter than that...
im going to prolly be running 2.5" all the way back and then be putting on some really good flowing muffler...
i want to hear my turbo spool up...
nathan
07-29-2004, 04:15 PM
#7
1.5 BAR
Join Date: May 2003
Posts: 808
Re:How loud are open downpipes..?
im running an open downpipe right now. ive been running it like that for like 2 weeks now. i dont think it is as loud as and open header. its not bad at all. besides u can hear the turbo spool louder.just rumbles when u decelerating(sp) in vtec 
. i have no plans of hooking it up anytime soon.i have heard cars with "coffee can" mufflers loader than mine.
. i have no plans of hooking it up anytime soon.i have heard cars with "coffee can" mufflers loader than mine.
07-29-2004, 04:21 PM
#8
3.0 BAR
Join Date: Mar 2003
Posts: 21,479
Re:How loud are open downpipes..?
Open downpipes kick ***. They are quieter than a N/A motor with open header IMO. Faster spool, more HP, more intimidation. 
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07-29-2004, 04:29 PM
#10
1.5 BAR
Join Date: Jun 2003
Posts: 911
Re:How loud are open downpipes..?
I'm running open downpipe right now, it's alot louder than with my exhaust (straight thru to magnaflow) but it's definitly not as loud as open header. I've driven right by police and not gotten pulled over.
