Go Back   Team-BHP > Under the Hood > Modifications & Accessories


View Poll Results: Do you hear it ?
Yes, I can - loud and clear !!..its addictive. 17 89.47%
My FFE's awesome but I still dont hear it. 0 0%
Dude whats a FFE and how does it relate to pop music? 2 10.53%
Voters: 19. You may not vote on this poll

Reply
 
Thread Tools Search this Thread
Old 15th July 2011, 12:40   #1
BHPian
 
chetanhanda's Avatar
 
Join Date: Mar 2005
Location: Toronto
Posts: 886
Thanked: 44 Times
Talking Can you hear your FFE pop ?

All you guys with FFEs - how many of you can actually hear the distinct popping during downshift, on the overrun , or simply coasting down an incline ?
I'm not talking ALS here; just good old fashioned true FFE.
chetanhanda is offline   Reply With Quote
Old 15th July 2011, 15:37   #2
Distinguished - BHPian
 
dhanushs's Avatar
 
Join Date: Oct 2009
Location: Bathery/BLR
Posts: 3,522
Thanked: 4,507 Times
Default Re: Can you hear your FFE pop ?

Hi chetanhanda, are you sure you can hear it in the newer mpfi's?. I believe you are talking about a carburatte'd vehicle here?. Please confirm.
dhanushs is offline   Reply With Quote
Old 15th July 2011, 16:15   #3
BHPian
 
chetanhanda's Avatar
 
Join Date: Mar 2005
Location: Toronto
Posts: 886
Thanked: 44 Times
Default Re: Can you hear your FFE pop ?

Quote:
Originally Posted by dhanushs View Post
Hi chetanhanda, are you sure you can hear it in the newer mpfi's?. I believe you are talking about a carburatte'd vehicle here?. Please confirm.
Nope not specific to carbs, but to modern MPFIs with an ECU.
chetanhanda is offline   Reply With Quote
Old 15th July 2011, 16:48   #4
Senior - BHPian
 
speedsatya's Avatar
 
Join Date: May 2004
Location: bangalore/manga
Posts: 3,163
Thanked: 712 Times
Default Re: Can you hear your FFE pop ?

I had fitted Auto LPG on the Zen( 2001,16V mpfi) between 2007 to 2008 and drove close to 40000 kms.This sound was very prominent on LPG when downshifting or when letting go the accelerator above 3000 rpm.

And yeah ,I always say I have an Automech music system
speedsatya is offline   Reply With Quote
Old 15th July 2011, 17:01   #5
BHPian
 
chetanhanda's Avatar
 
Join Date: Mar 2005
Location: Toronto
Posts: 886
Thanked: 44 Times
Default Re: Can you hear your FFE pop ?

Quote:
Originally Posted by speedsatya View Post
I had fitted Auto LPG on the Zen( 2001,16V mpfi) between 2007 to 2008 and drove close to 40000 kms.This sound was very prominent on LPG when downshifting or when letting go the accelerator above 3000 rpm.

And yeah ,I always say I have an Automech music system
Thats more like it
Do you have a cat con ?
If you like the sound try and remove your catcon and put a straight through and enjoy your music system..
chetanhanda is offline   Reply With Quote
Old 15th July 2011, 18:08   #6
Senior - BHPian
 
planet_rocker's Avatar
 
Join Date: Sep 2006
Location: Bong-land
Posts: 2,323
Thanked: 368 Times
Default Re: Can you hear your FFE pop ?

are you talking about something like this (check the last part):



sound good IMO.

Last edited by planet_rocker : 15th July 2011 at 18:09.
planet_rocker is offline   Reply With Quote
Old 15th July 2011, 18:23   #7
Senior - BHPian
 
speedsatya's Avatar
 
Join Date: May 2004
Location: bangalore/manga
Posts: 3,163
Thanked: 712 Times
Default Re: Can you hear your FFE pop ?

No I dont have the cat con ,but its not a straight pipe .I have a stainless steel end can which replaced the mild steel muffler after around 1.5 L kms.

And yes ,the sound after 3k rpm is music
speedsatya is offline   Reply With Quote
Old 15th July 2011, 18:25   #8
Senior - BHPian
 
sumeethaldankar's Avatar
 
Join Date: May 2007
Location: Mumbai
Posts: 2,825
Thanked: 1,161 Times
Default Re: Can you hear your FFE pop ?

Has been discussed at my below thread.

http://www.team-bhp.com/forum/techni...elerating.html (Popping Sound from Exhaust while decelerating)
sumeethaldankar is online now   Reply With Quote
Old 15th July 2011, 18:45   #9
Senior - BHPian
 
m4ugr8's Avatar
 
Join Date: Jul 2007
Location: New Delhi
Posts: 1,291
Thanked: 123 Times
Default Re: Can you hear your FFE pop ?

I could hear this POP very loudly in my OHC when it had only headers and a straight pipe no CAT CON or muffler. Music to your ears truly. And a bit of tunning on the MAP I could make it sound as loud as those Enfield pops
m4ugr8 is offline   Reply With Quote
Old 15th July 2011, 18:45   #10
BHPian
 
chetanhanda's Avatar
 
Join Date: Mar 2005
Location: Toronto
Posts: 886
Thanked: 44 Times
Default Re: Can you hear your FFE pop ?

Quote:
Originally Posted by sumeethaldankar View Post
1] That thread deals with it like if its an "issue".
This thread is in context being part of the "fun" of having an unrestrictive exhaust with low back pressure..its acceptable to have some pop sounds.
Low back pressure is going to help the intake/exhaust valve overlap to allow more unburnt fuel to reach the hot exhaust.
Higher exhaust velocity due to not having a catcon also helps this.

2] The other thread is like a query for dealing with an issue specific to your carb maruti.
In this context of "sound = fun" this current thead has a poll asking how many people exist having this kind of "amount of fuel in the exhaust" with their setups.

I feel these are 2 different threads.
chetanhanda is offline   Reply With Quote
Old 15th July 2011, 18:53   #11
BHPian
 
chetanhanda's Avatar
 
Join Date: Mar 2005
Location: Toronto
Posts: 886
Thanked: 44 Times
Default Re: Can you hear your FFE pop ?

Quote:
Originally Posted by m4ugr8 View Post
I could hear this POP very loudly in my OHC when it had only headers and a straight pipe no CAT CON or muffler. Music to your ears truly. And a bit of tunning on the MAP I could make it sound as loud as those Enfield pops
Now we are talking!!
Get a video clip for us when you do it again.

I'm running a straight pipe + near straight through muffler on my mpfi 4 valve Maruti 800 daily driver and its addictive fun on downhills.
chetanhanda is offline   Reply With Quote
Old 15th July 2011, 18:58   #12
BHPian
 
1self's Avatar
 
Join Date: Sep 2006
Location: Pune
Posts: 628
Thanked: 270 Times
Default Re: Can you hear your FFE pop ?

I can definately hear the exhaust pop on both my cars on the overrun. It turns heads! Freeflow in one & catless with Magnaflow on the other. As you advance ignition timing, the frequency (though not intensity) of the pops reduce.

Last edited by 1self : 15th July 2011 at 19:04.
1self is offline   Reply With Quote
Old 15th July 2011, 19:10   #13
BHPian
 
chetanhanda's Avatar
 
Join Date: Mar 2005
Location: Toronto
Posts: 886
Thanked: 44 Times
Default Re: Can you hear your FFE pop ?

Quote:
Originally Posted by 1self View Post
I can definately hear the exhaust pop on both my cars on the overrun. It turns heads! Freeflow in one & catless with Magnaflow on the other. As you advance ignition timing, the frequency (though not intensity) of the pops reduce.
The V6 sonata must be having an interesting sound track !!
Thats an odd but interesting combination, not seen many modded sonatas
chetanhanda is offline   Reply With Quote
Old 17th July 2011, 15:09   #14
GTO
Team-BHP Support
 
GTO's Avatar
 
Join Date: Feb 2004
Location: Bombay
Posts: 49,888
Thanked: 103,780 Times
Default Re: Can you hear your FFE pop ?

Chetan, you mean popping due to the fuel after-burn? But of course! I've been hearing it on the Civic since the day I got the Automech exhaust installed. Makes deceleration fun . BTW, you'll be surprised to know how often this popping sound is misdiagnosed as backfire.
GTO is offline   Reply With Quote
Old 17th July 2011, 16:04   #15
BANNED
 
Join Date: Nov 2006
Location: London
Posts: 5,012
Thanked: 152 Times
Default Re: Can you hear your FFE pop ?

Ahh yes. Try a full red line in second gear when you are coming down a flyover and then then let it coast till the revs drop. BTW, this is actually unburnt octane.
Cyrus43 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
F1-2012: How many times did you hear that 'Tire Management' is critical? akshay380 Int'l Motorsport 149 19th July 2012 11:08
How did you hear about team-bhp ? adityapd Shifting gears 354 11th February 2012 08:04
How Much did you pay for your Headers & FFE & which car ? esteem_lover Technical Stuff 140 30th March 2009 19:57


All times are GMT +5.5. The time now is 22:16.

Copyright 2000 - 2018, Team-BHP.com
Proudly powered by E2E Networks