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


Reply
 
Thread Tools Search this Thread
Old 16th September 2009, 00:59   #31
Senior - BHPian
 
v1p3r's Avatar
 
Join Date: Feb 2005
Location: BLR - chasing cars...
Posts: 4,836
Thanked: 26 Times
Default

Quote:
Originally Posted by suhaas307 View Post
A BOV, actually, is not very necessary. It's for the sound that usually people go ahead with installing it. Unless your motor is churning excessive power and boost, you don't need it. It just sounds really cool, when you come off the throttle!
A BOV/dump/recirc valve is ESSENTIAL for any turbocharged petrol vehicle.

Quote:
Originally Posted by Ravveendrra View Post
It just does not make sense to me.

The turbo is stock therefore there is no increase in boost, no other mods are made to the air intake system, the stock recirculation or bypass system works fine and there is no back pressure on the turbo unit. The BOV makes the car sound like a vintage steam engine and is loud enough to make a long drive a nerve wracking one.
Stock diesels do not have a recirculation valve.

Quote:
Originally Posted by suhaas307 View Post
Diesel motors have a DV. Petrol motors that are turbocharged have BOVs. There is a difference. Look it up.
I'd like to see this. I've never seen a diesel engine with an OE DV. Do you have any links?

Quote:
Originally Posted by suhaas307 View Post
There is a difference between a DV and a BOV. DVs are generally used on turbocharged, yet, stock cars. Correct me if I'm wrong?
You're wrong.

Diesels do not have DVs. OE turbocharged petrols -- Skodas in India -- come with internally vented diverter/recirculating valves. If you vent these outside, they perform the same function as BOVs. You can also swap them for some cool shiny aftermarket BOVs which will quite likely be louder.

And I do believe BOVs/recirc/diverter valves increase a bit of power through increased throttle response and quickness of revs.

karan, any update from Ranjit?
v1p3r is offline   Reply With Quote
Old 16th September 2009, 01:09   #32
Senior - BHPian
 
Ravveendrra's Avatar
 
Join Date: Jan 2008
Location: Hyderabad
Posts: 1,391
Thanked: 405 Times
Default

Quote:
Originally Posted by v1p3r View Post
........

Stock diesels do not have a recirculation valve.


Diesels do not have DVs. OE turbocharged petrols -- Skodas in India -- come with internally vented diverter/recirculating valves.

.......
Just for my education, what does the Laura (Diesel) have in stock form?

Noted that a BOV will increase throttle response even without any other mod.

Cheers,
Ravveendrra is offline   Reply With Quote
Old 16th September 2009, 01:38   #33
Senior - BHPian
 
v1p3r's Avatar
 
Join Date: Feb 2005
Location: BLR - chasing cars...
Posts: 4,836
Thanked: 26 Times
Default

Nothing. No diesel comes with any sort of OE valve.
v1p3r is offline   Reply With Quote
Old 16th September 2009, 15:52   #34
Team-BHP Support
 
suhaas307's Avatar
 
Join Date: Aug 2009
Location: Bangalore
Posts: 8,055
Thanked: 6,602 Times
Default

Quote:
Originally Posted by v1p3r View Post
Nothing. No diesel comes with any sort of OE valve.
Of course it does! All turbocharged vehicles come with DVs! How do you explain the whistling under the hood of a diesel car?

Quote:
Diesels do not have DVs. OE turbocharged petrols -- Skodas in India -- come with internally vented diverter/recirculating valves. If you vent these outside, they perform the same function as BOVs. You can also swap them for some cool shiny aftermarket BOVs which will quite likely be louder.
So they are essentially DVs right? How could you say that diesels don't come with any sort of valve?

Last edited by suhaas307 : 16th September 2009 at 16:03.
suhaas307 is offline   Reply With Quote
Old 16th September 2009, 21:16   #35
Newbie
 
Join Date: Feb 2009
Location: chandigarh / auckland
Posts: 7
Thanked: 0 Times
Default

Does the laura run on a MAF ? If so you will have poor drivibility and stalling running it on 100% vent to air (for full whooosh factor) as the air going through is metered on MAF sensored cars.To be safe get a hybrid bov in which you can set to 50-50 instead of 100% vta.
enfield1212 is offline   Reply With Quote
Old 16th September 2009, 23:56   #36
Senior - BHPian
 
v1p3r's Avatar
 
Join Date: Feb 2005
Location: BLR - chasing cars...
Posts: 4,836
Thanked: 26 Times
Default

Quote:
Originally Posted by suhaas307 View Post
Of course it does! All turbocharged vehicles come with DVs! How do you explain the whistling under the hood of a diesel car?
You do know that turbos whistle, right? That's why it's called a 'turbo whistle'.

Quote:
Originally Posted by suhaas307 View Post
So they are essentially DVs right? How could you say that diesels don't come with any sort of valve?
Please read what I have said.
Quote:
Originally Posted by v1p3r View Post
Diesels do not have DVs. OE turbocharged petrols -- Skodas in India -- come with internally vented diverter/recirculating valves.
Quote:
Originally Posted by v1p3r
Quote:
Originally Posted by suhaas307
Diesel motors have a DV. Petrol motors that are turbocharged have BOVs. There is a difference. Look it up.
I'd like to see this. I've never seen a diesel engine with an OE DV. Do you have any links?
suhaas307, like I said, I'd appreciate a link.

enfield1212, it depends on where the BOV is located and where the MAF is located. The MAF on the 1.8t -- the RS engine -- is located just after the air filter. Thus it makes no difference if you vent the valve internally or externally.
v1p3r is offline   Reply With Quote
Old 17th September 2009, 00:12   #37
Team-BHP Support
 
suhaas307's Avatar
 
Join Date: Aug 2009
Location: Bangalore
Posts: 8,055
Thanked: 6,602 Times
Default

True. Diesels don't have a DV. I was mistaken. Sorry for my ignorance, I finally took the pains to do some research on this topic. I don't know much about diesel motors.

Last edited by suhaas307 : 17th September 2009 at 00:22.
suhaas307 is offline   Reply With Quote
Old 17th September 2009, 00:28   #38
Senior - BHPian
 
binz's Avatar
 
Join Date: Aug 2005
Location: Bangalore
Posts: 1,300
Thanked: 411 Times
Default

OT: do you study at christ university?
binz is offline   Reply With Quote
Old 17th September 2009, 00:44   #39
Team-BHP Support
 
suhaas307's Avatar
 
Join Date: Aug 2009
Location: Bangalore
Posts: 8,055
Thanked: 6,602 Times
Default

Quote:
Originally Posted by binz View Post
OT: do you study at christ university?
No. I used to though. Why'd you ask?

Quote:
Originally Posted by v1p3r View Post
You do know that turbos whistle, right? That's why it's called a 'turbo whistle'.


Please read what I have said.


suhaas307, like I said, I'd appreciate a link.

enfield1212, it depends on where the BOV is located and where the MAF is located. The MAF on the 1.8t -- the RS engine -- is located just after the air filter. Thus it makes no difference if you vent the valve internally or externally.
Quote:
Originally Posted by v1p3r View Post
EDIT: Post redundant. Mods, please delete if you feel the need.

suhas307, sorrry, I type fast!
Sorry I hadn't realized what I was arguing about! You're right, Diesels don't have OE fitment DVs. I had forgotten that they neither have a throttle body/flap or a manifold vacuum to operate one.

Last edited by suhaas307 : 17th September 2009 at 00:56.
suhaas307 is offline   Reply With Quote
Old 17th September 2009, 12:29   #40
Senior - BHPian
 
Ravveendrra's Avatar
 
Join Date: Jan 2008
Location: Hyderabad
Posts: 1,391
Thanked: 405 Times
Default

No throttle body, no throttle flap, no manifold vaccum .........

LOL, now I feel shortchanged

Time I followed in Suhas's footsteps and did some research on Diesel engines as I drive one and driving one without knowing what is, or is not under the hood kinda scares me.

Cheers,
Ravveendrra is offline   Reply With Quote
Old 17th September 2009, 20:49   #41
Distinguished - BHPian
 
karan561's Avatar
 
Join Date: Aug 2006
Location: Mumbai
Posts: 3,752
Thanked: 9,190 Times
Default

Couldnt meet up Ranjit last weekend as he was busy.

Have tried calling him up but since a couple of days his phone is OFF.

What about a CONICAL AIR FILTER ? No doubt it will increase performance but i feel it will Increase the engine sound in a diesel.

If yes a K&N or a Green Cotton or any other brand ?

What say guys ?
karan561 is online now   Reply With Quote
Old 17th September 2009, 20:53   #42
Team-BHP Support
 
suhaas307's Avatar
 
Join Date: Aug 2009
Location: Bangalore
Posts: 8,055
Thanked: 6,602 Times
Default

Quote:
Originally Posted by karan561 View Post

What about a CONICAL AIR FILTER ? No doubt it will increase performance but i feel it will Increase the engine sound in a diesel.

If yes a K&N or a Green Cotton or any other brand ?

What say guys ?
I've heard that Green Cotton works very well with Skodas. Even better than K&Ns.
suhaas307 is offline   Reply With Quote
Old 17th September 2009, 22:55   #43
Team-BHP Support
 
Akshay1234's Avatar
 
Join Date: Dec 2006
Location: Mumbai
Posts: 9,762
Thanked: 6,670 Times
Default

Quote:
Originally Posted by karan561 View Post
Couldnt meet up Ranjit last weekend as he was busy.

Have tried calling him up but since a couple of days his phone is OFF.

What about a CONICAL AIR FILTER ? No doubt it will increase performance but i feel it will Increase the engine sound in a diesel.

If yes a K&N or a Green Cotton or any other brand ?

What say guys ?
dont get a conical. it gets really loud on turbocharged cars. either get a carbonio intake kit or get a green stock replacement filter.
Akshay1234 is offline   Reply With Quote
Old 17th September 2009, 23:56   #44
Senior - BHPian
 
Ravveendrra's Avatar
 
Join Date: Jan 2008
Location: Hyderabad
Posts: 1,391
Thanked: 405 Times
Default Green Cotton

I have a Green Cotton stock replacement filter, I have switched off the Pete's box and the engine is still wonderful. I hardly miss the Pete's.

Cheers,
Ravveendrra is offline   Reply With Quote
Old 18th September 2009, 12:10   #45
Distinguished - BHPian
 
karan561's Avatar
 
Join Date: Aug 2006
Location: Mumbai
Posts: 3,752
Thanked: 9,190 Times
Default

Quote:
Originally Posted by akshay1234 View Post
dont get a conical. it gets really loud on turbocharged cars. either get a carbonio intake kit or get a green stock replacement filter.
Point Noted.

Carbonio Intake Kit - Have seen it fitted on a few RS'. Is it Available for a Diesel ?

Quote:
Originally Posted by Ravveendrra View Post
I have a Green Cotton stock replacement filter, I have switched off the Pete's box and the engine is still wonderful. I hardly miss the Pete's.

Cheers,
Sounds Great. How much did you pay for the same ?
karan561 is online now   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Skoda Laura Ambiente-cheaper Laura deuce-deuce The Indian Car Scene 94 11th July 2008 06:53
Facelifted Octy, Cheaper Laura EDIT : Laura Elegance ajmat The Indian Car Scene 139 27th August 2007 10:47
Skoda Laura or Hyundai Sonata Embera Insane Devil Sedans 45 19th January 2006 19:05
Skoda India plans to sell Octavia & Laura TOGETHER! GTO The Indian Car Scene 129 21st December 2005 21:07


All times are GMT +5.5. The time now is 17:48.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks