What's a free flow exhaust ?

turbo_freak · 13th September 2006, 16:44

Hi,

Can Freeflow be put into a diesel car too....

burjiis · 13th September 2006, 17:33

Hi Turbo Freak,
Yes, a free flow can be put in a diesel car as well.

Burjis

ram_hyundai · 16th October 2006, 20:37

hi,
im to take the delivery of my verna vgt,any of you heard of headders and free flow for the diesels and advice on the subject.

rranjith_kum · 16th October 2006, 21:29

please wait till your first service let the engine set in then fix the free flow and headers and alll....

revvedup · 16th October 2006, 22:25

once i had met someone who had modded his skoda octi tdi and asked him whether he had a free flow exhaust or not .He replied that he had not installed it because it would foul with the turbo in the car.I supose that the same may be true for the verna also since a turbocharger is driven by exhaust gases and though turbos have pressure cut off valves ,free flow exhausts increase exhaust gas velocity and this may not be tolerated by the turbos vanes especaille because it is variable turbo.Do this only with the help of an expert otherwise you will ruin your verna.

chiragh_bir · 9th June 2007, 10:32

Guys what do you mean by cat back exhausts systems!!!!

rishibravo · 9th June 2007, 10:42

A catback exhaust is when you keep the manifold and catalytic converter of the stock car and change the expansion chamber , muffler and the end tip. In my opinion its a waste of money with no performance improvement and only done to modify the exhaust note. If one is going for a FFE then he should get it changed from end to end (get custom made headers, preferably remove the catcon and get custom made mild steel expansion chamber and a muffler and stainless steel tip).

paras211 · 9th June 2007, 13:42

as the term cat back suggets its the part of the exhaust after the cat to the end
a cat back does give a performance increase but not as much as one can get with a header

.anshuman · 9th June 2007, 13:52

By removing the catcon we make sure that we pollute the envoirnment well,i have removed the catcon as i have a automech FFE with stock muffler and the car does not pass the Pollution under control test on petrol but it easily passes it on CNG.

rider60 · 30th October 2007, 01:20

i once inquired about the free flow for my accent viva crdi at the performance shop called RACING UNLIMITED here in Hyderabad, the guy said the one to fit my car with out harming the car would cost me around 40k bucks and extra for fitting it he said its a mugen brand exhaust, is this really feasible?

n_aditya · 30th October 2007, 19:56

Quote:

Originally Posted by rider60

would cost me around 40k bucks and extra for fitting it he said its a mugen brand exhaust, is this really feasible?

40k for a FFE? If its a genuine Mugen exhaust system the price might be justified.

But you can get a FFE (unbranded or even automech for example) for around 1/4th the price and even lesser. Decide what you want. A decent FFE or a decent FFE with a brand name.

viper · 30th October 2007, 20:04

Quote:

Originally Posted by rider60

i once inquired about the free flow for my accent viva crdi at the performance shop called RACING UNLIMITED here in Hyderabad, the guy said the one to fit my car with out harming the car would cost me around 40k bucks and extra for fitting it he said its a mugen brand exhaust, is this really feasible?

Hi,

Mugen for a Hyundai

. Thats a first. Also pl ask him to specify what is included in 40k.

Viper

ram_hyundai · 1st November 2007, 10:30

I would like to go for k&n filters and free flow for my verna.it has done 20000 kms .is there any damage likely for the engine .please advice

ram

rider60 · 1st November 2007, 10:48

Quote:

Originally Posted by n_aditya

40k for a FFE? If its a genuine Mugen exhaust system the price might be justified.

But you can get a FFE (unbranded or even automech for example) for around 1/4th the price and even lesser. Decide what you want. A decent FFE or a decent FFE with a brand name.

@viper

Hi,

Mugen for a Hyundai

. Thats a first. Also pl ask him to specify what is included in 40k.

Viper

the guy said thats the only original FFE that will suit my car and would run with out harming the engine,
i had thought if the FFE's cost is around 10k bucks all charges included then i would get one for myself but this guy quoated 40k bucks and said the other ones can be tried will screw the diesel crdi engine.

OT:also the shop guy says, as we fit nos for the gasoline vehicles for boost, it seems they fit in lpg for diesel for the boost in power how far is tis true? just curious!

DirtyDan · 5th November 2007, 03:40

Modern diesels with turbos have a sensor or sensors in the exhaust that sniff for heat and chemical content of exhaust gas and then feed this info back to the vehicle's computer. The computer (chip) then controls things like the EGR (exhaust gas recycle valve) and maybe the vanes on the turbo and some other things as well.

My point is, that if you let someone do work on your exhaust or install a product that disrupts these sensors then you will seriously disrupt the information your vehicle's computer recieves and you will probably greatly harm the performance. Make sure the people who work on your vehicle know what they are doing. You can not just bolt on a higher diameter unrestricted exhaust system. You have to account for the sensors.

13th September 2006, 16:44	#46
turbo_freak BHPian Join Date: Jun 2006 Location: Bangalore Posts: 52 Thanked: 3 Times	Hi, Can Freeflow be put into a diesel car too....
	() Thanks

13th September 2006, 17:33	#47
burjiis BHPian Join Date: Nov 2005 Location: Mumbai Posts: 51 Thanked: 37 Times	Hi Turbo Freak, Yes, a free flow can be put in a diesel car as well. Burjis
	() Thanks

16th October 2006, 20:37	#48
ram_hyundai Senior - BHPian Join Date: Jun 2006 Location: Calicut ,trisur Posts: 2,019 Thanked: 53 Times View My Garage	hi, im to take the delivery of my verna vgt,any of you heard of headders and free flow for the diesels and advice on the subject.
	() Thanks

16th October 2006, 21:29	#49
rranjith_kum BHPian Join Date: Aug 2006 Location: Coimbatore/ Aachen Posts: 692 Thanked: 21 Times View My Garage	please wait till your first service let the engine set in then fix the free flow and headers and alll....
	() Thanks

16th October 2006, 22:25	#50
revvedup BHPian Join Date: Sep 2006 Location: Delhi Posts: 269 Thanked: 24 Times	once i had met someone who had modded his skoda octi tdi and asked him whether he had a free flow exhaust or not .He replied that he had not installed it because it would foul with the turbo in the car.I supose that the same may be true for the verna also since a turbocharger is driven by exhaust gases and though turbos have pressure cut off valves ,free flow exhausts increase exhaust gas velocity and this may not be tolerated by the turbos vanes especaille because it is variable turbo.Do this only with the help of an expert otherwise you will ruin your verna.
	() Thanks

9th June 2007, 10:32	#51
chiragh_bir Senior - BHPian Join Date: Dec 2004 Location: In front of you :P Posts: 1,123 Thanked: 74 Times View My Garage	Catback Exhausts.. What Is It!!! Guys what do you mean by cat back exhausts systems!!!!
	() Thanks

9th June 2007, 10:42	#52
rishibravo BHPian Join Date: Jul 2006 Location: New Delhi Posts: 579 Thanked: 12 Times View My Garage	A catback exhaust is when you keep the manifold and catalytic converter of the stock car and change the expansion chamber , muffler and the end tip. In my opinion its a waste of money with no performance improvement and only done to modify the exhaust note. If one is going for a FFE then he should get it changed from end to end (get custom made headers, preferably remove the catcon and get custom made mild steel expansion chamber and a muffler and stainless steel tip).
	(1) Thanks

9th June 2007, 13:42	#53
paras211 BHPian Join Date: Nov 2006 Location: mumbai Posts: 660 Thanked: 176 Times View My Garage	as the term cat back suggets its the part of the exhaust after the cat to the end a cat back does give a performance increase but not as much as one can get with a header
	() Thanks

9th June 2007, 13:52	#54
.anshuman Distinguished - BHPian Join Date: Dec 2004 Location: Good-Gaon Posts: 7,763 Thanked: 11,124 Times View My Garage	By removing the catcon we make sure that we pollute the envoirnment well,i have removed the catcon as i have a automech FFE with stock muffler and the car does not pass the Pollution under control test on petrol but it easily passes it on CNG.
	() Thanks

30th October 2007, 01:20	#55
rider60 Senior - BHPian Join Date: Mar 2007 Location: Bhagyanagaram. (A.K.A. Hyderabad) Posts: 1,619 Thanked: 56 Times View My Garage	i once inquired about the free flow for my accent viva crdi at the performance shop called RACING UNLIMITED here in Hyderabad, the guy said the one to fit my car with out harming the car would cost me around 40k bucks and extra for fitting it he said its a mugen brand exhaust, is this really feasible?
	() Thanks

1st November 2007, 10:30	#58
ram_hyundai Senior - BHPian Join Date: Jun 2006 Location: Calicut ,trisur Posts: 2,019 Thanked: 53 Times View My Garage	I would like to go for k&n filters and free flow for my verna.it has done 20000 kms .is there any damage likely for the engine .please advice ram
	() Thanks

5th November 2007, 03:40	#60
DirtyDan Senior - BHPian Join Date: Jul 2007 Location: Dharamsala, H.P Posts: 2,107 Thanked: 1,664 Times	sensors Modern diesels with turbos have a sensor or sensors in the exhaust that sniff for heat and chemical content of exhaust gas and then feed this info back to the vehicle's computer. The computer (chip) then controls things like the EGR (exhaust gas recycle valve) and maybe the vanes on the turbo and some other things as well. My point is, that if you let someone do work on your exhaust or install a product that disrupts these sensors then you will seriously disrupt the information your vehicle's computer recieves and you will probably greatly harm the performance. Make sure the people who work on your vehicle know what they are doing. You can not just bolt on a higher diameter unrestricted exhaust system. You have to account for the sensors.
	() Thanks