Notices

"straight piping" the 3.7

 
Old 06-01-2019, 11:33 AM
  #1  
Registered Member
Thread Starter
 
dopeboy1's Avatar
 
Join Date: Apr 2017
Age: 29
Posts: 756
Received 137 Likes on 108 Posts
"straight piping" the 3.7

A little background, I have a 2012 SH with rv6 jpipe and rv6 hfpcs and I want it louder. I was going to get magnaflow mufflers but then I thought It would be cheap to do a muffler delete and if I don't like it I can then order the magnaflows.

So would hfpc, catless jpipe and a muffler delete be considered straight pipe? Except of course for having hfpc's instead of PCD. If not what else is there to remove?

At first I was 100% sure I wanted to try it. But then the other day I was driving like 5 cars behind a straight piped S4 and it sounded like complete ass. Literally ass, like really loud continuous farting noises. If it sounds like that I will hate it.

Anyways after acura replaces my pistons and rings and such I still think I will do the muffler delete. Any thoughts? Can I consider it more or less straight piped once I get a muffler delete?
dopeboy1 is offline  
Old 06-01-2019, 03:43 PM
  #2  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 80,748
Received 14,045 Likes on 10,438 Posts
your car will sound like ass without mufflers.

i'm completely catless
RV6 pre-cat deletes --> Rv6 Jpipe---> Rv6 Exhaust. the cat back exhaust has two great mufflers that TUNE the sound.

without the mufflers there's no way to "tune" what the exhaust sounds like.
it will be complete ASSS!!!!!

it's ALLL experimentation, ANYWAY.
if you get daring, TRY it.
you can always throw mufflers back on

Last edited by justnspace; 06-01-2019 at 03:46 PM.
justnspace is offline  
The following users liked this post:
losiglow (06-04-2019)
Old 06-01-2019, 04:54 PM
  #3  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 80,748
Received 14,045 Likes on 10,438 Posts
and to answer the question; since you have the high flow cats, you would not be considered catless....because you still have cats...albeit high flowing cats.
justnspace is offline  
Old 06-01-2019, 06:20 PM
  #4  
Registered Member
Thread Starter
 
dopeboy1's Avatar
 
Join Date: Apr 2017
Age: 29
Posts: 756
Received 137 Likes on 108 Posts
Yeah it probably will sound like ass. Still want to try it on the off chance that it sounds okay. Hopefully hfpc and stock resonator will be enough to keep it from full ass sound lol.
dopeboy1 is offline  
The following users liked this post:
justnspace (06-01-2019)
Old 06-01-2019, 06:35 PM
  #5  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 80,748
Received 14,045 Likes on 10,438 Posts
try it! only way to know if you like something.
justnspace is offline  
Old 06-01-2019, 06:37 PM
  #6  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 80,748
Received 14,045 Likes on 10,438 Posts
at least, that's what my parents tell me when I push aside the brussel sprouts
justnspace is offline  
Old 06-02-2019, 12:25 AM
  #7  
WTF?
 
Midnight Mystery's Avatar
 
Join Date: Mar 2016
Location: Mississippi Coast (But not for much longer)
Age: 22
Posts: 5,336
Received 312 Likes on 279 Posts
How about just go full rat rod with the headers piped out the hood?
Midnight Mystery is offline  
Old 06-02-2019, 10:42 PM
  #8  
Registered Member
 
Anicra's Avatar
 
Join Date: Feb 2013
Location: Falcon Heights, MN
Posts: 537
Received 45 Likes on 39 Posts
Do a X cross over too! I had to drive a header only rotary engine for 40 miles, that is loudest car I have ever heard
Anicra is offline  
Old 06-03-2019, 10:56 AM
  #9  
Registered Member
Thread Starter
 
dopeboy1's Avatar
 
Join Date: Apr 2017
Age: 29
Posts: 756
Received 137 Likes on 108 Posts
Okay boys right after I twin turbo it!
dopeboy1 is offline  
Old 06-03-2019, 11:04 AM
  #10  
Registered Member
iTrader: (1)
 
losiglow's Avatar
 
Join Date: Nov 2010
Location: Salt Lake City, UT
Age: 37
Posts: 3,185
Received 748 Likes on 532 Posts
Won't sound good. The HFPC's might tone it down a bit than if it were truly straight piped (like justn said, straight piped by definition indicates there is no cat's or mufflers whatsoever). But it will still sound nasty.

When I was getting my Magnaflows installed, I had the shop start it up just to see what it sounded like with just the HFPC's, jpipe and stock resonator. I thought the HFPC's and resonator might be enough and we could just delete the mufflers. I was very wrong.
losiglow is online now  
Old 06-03-2019, 11:14 AM
  #11  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 80,748
Received 14,045 Likes on 10,438 Posts
one could also do a very quick experiment by unhooking the jpipe and starting her up
SUPER loud!
justnspace is offline  
Old 06-03-2019, 12:02 PM
  #12  
Registered Member
Thread Starter
 
dopeboy1's Avatar
 
Join Date: Apr 2017
Age: 29
Posts: 756
Received 137 Likes on 108 Posts
Originally Posted by losiglow View Post
Won't sound good. The HFPC's might tone it down a bit than if it were truly straight piped (like justn said, straight piped by definition indicates there is no cat's or mufflers whatsoever). But it will still sound nasty.

When I was getting my Magnaflows installed, I had the shop start it up just to see what it sounded like with just the HFPC's, jpipe and stock resonator. I thought the HFPC's and resonator might be enough and we could just delete the mufflers. I was very wrong.
Ahhh its that bad huh. I wonder why some cars sound good with a muffler delete and some not.

Like my friend has a wrx with a muffler delete and it sounds great.
dopeboy1 is offline  
Old 06-04-2019, 09:49 AM
  #13  
Registered Member
iTrader: (1)
 
losiglow's Avatar
 
Join Date: Nov 2010
Location: Salt Lake City, UT
Age: 37
Posts: 3,185
Received 748 Likes on 532 Posts
Yeah, it's really about how the sound waves travel and resonate through different components. It can be different for each engine. But yeah, HFPC's + Jpipe + stock resonator - mufflers =

That's just my opinion though. It didn't actually have much rasp. It was just way too much drone. Even with that setup + magnaflow mufflers, there's a little bit of drone. I think it's the perfect amount though - to let you be in touch with the engine without it being overbearing.
losiglow is online now  
The following users liked this post:
justnspace (06-04-2019)
Old 06-04-2019, 09:53 AM
  #14  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 80,748
Received 14,045 Likes on 10,438 Posts
Originally Posted by dopeboy1 View Post
Ahhh its that bad huh. I wonder why some cars sound good with a muffler delete and some not.

Like my friend has a wrx with a muffler delete and it sounds great.
cuz that's a boxer 4 engine.
justnspace is offline  
Old 06-04-2019, 09:54 AM
  #15  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 80,748
Received 14,045 Likes on 10,438 Posts

Last edited by justnspace; 06-04-2019 at 10:00 AM.
justnspace is offline  
Old 06-04-2019, 10:04 AM
  #16  
Registered Member
iTrader: (1)
 
losiglow's Avatar
 
Join Date: Nov 2010
Location: Salt Lake City, UT
Age: 37
Posts: 3,185
Received 748 Likes on 532 Posts
Jason does a great job explaining stuff like that. Very good channel.
losiglow is online now  
Old 06-04-2019, 10:09 AM
  #17  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 80,748
Received 14,045 Likes on 10,438 Posts
if you didnt want to watch the video, Jason explains....the unequal length headers create the wonderful sound of boxer 4 engines. one could create unequal length headers for the inline 4 or the v6, but it wouldnt be efficient in exhaust scavenging
justnspace is offline  
Old 06-04-2019, 10:20 AM
  #18  
Registered Member
Thread Starter
 
dopeboy1's Avatar
 
Join Date: Apr 2017
Age: 29
Posts: 756
Received 137 Likes on 108 Posts
Well that makes sense. Which Magnaflow mufflers did you get? 11225?

Same for fwd and awd?
dopeboy1 is offline  
Old 06-04-2019, 12:11 PM
  #19  
Registered Member
iTrader: (1)
 
losiglow's Avatar
 
Join Date: Nov 2010
Location: Salt Lake City, UT
Age: 37
Posts: 3,185
Received 748 Likes on 532 Posts
Yes and yes
losiglow is online now  
Old 06-05-2019, 04:41 PM
  #20  
Registered Member
 
Unknownerror0010011's Avatar
 
Join Date: Jun 2017
Location: Toronto,Canada
Posts: 89
Received 13 Likes on 9 Posts
You can delete the mufflers and see how you like it if u wanted it louder after that you can get aftermarket resonators thats i did the oem resonator chambers are 20" i put 2 magnaflow resonators in place of the factory ones with a 22" chamber on and it made it significantly louder compared to the stock generally the smaller the resonator the louder it gets i plan on installing my hfpc's soon to get some more noise. But i wouldnt recommend straight piping it sounds nice at idle but it way to obnoxious when driving.
Unknownerror0010011 is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
TheWanderer316
Car Parts for Sale
2
10-28-2008 01:03 PM
laoboydanny
First Generation CL Discussion (1997-1999)
36
12-26-2007 10:24 AM
jhood
3G TL Performance Parts & Modifications
3
08-13-2006 11:59 PM
KamikazeTL
Second Generation TL (1999-2003)
29
07-28-2005 11:10 PM
dopeTL
Second Generation TL (1999-2003)
0
11-20-2002 12:41 AM


Thread Tools
Search this Thread
Quick Reply: "straight piping" the 3.7


Contact Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.