dumpvalves
16 January 2007, 06:14 PM
#1
Scooby Regular
Thread Starter
Join Date: Jan 2007
Posts: 352
Likes: 0
Received 0 Likes
on
0 Posts
dumpvalves
HI EVERY1 DOES ANY1 KNOW OF ANY LINKS 2 LISTEN 2 DIFERENT MAKES AND SOUNDS OF DUMPVALVES ? GOT THE CHANCE 2 BUY A RATTLESNAKE DUMPVALVE ANY1 GOT OR HEARD THIS MODEL ?
16 January 2007, 07:25 PM
#3
Scooby Regular
Join Date: Oct 2003
Location: Tellins, Home of Super Leagues finest, and where a "split" is not all it seems.
Posts: 5,504
Likes: 0
Received 0 Likes
on
0 Posts
What are those dumpvalves lorries have coz they're proper loud???
ps; as chrispurvis100 said
ps; as chrispurvis100 said
Trending Topics
16 January 2007, 08:07 PM
#8
Scooby Regular
iTrader: (2)
Join Date: Apr 2004
Location: Somewhere in Kent, sniffing some V-Power
Posts: 15,029
Likes: 0
Received 0 Likes
on
0 Posts
Your car already has a re-circulating dump-valve. Nothing wrong with that.
A VTA dump valve, like the one you're on about, will vent the air to the atmosphere, making the ptshh sound.
This ecu will add the amount of fuel for the volume of air it measured with the maf sensor. If some of the air has been lost, the mixture will be rich, possible leading to momentary 'bore-wash'.
You'll also experience pops and bangs from the exhaust on over-run.
Basically, you will be making the car run less efficent.
When I fitted one (big mistake but I will own up to it!), it actually caused more lag in between gear changes and made the car very jerky when applying or coming off the throttle.
A VTA dump valve, like the one you're on about, will vent the air to the atmosphere, making the ptshh sound.
This ecu will add the amount of fuel for the volume of air it measured with the maf sensor. If some of the air has been lost, the mixture will be rich, possible leading to momentary 'bore-wash'.
You'll also experience pops and bangs from the exhaust on over-run.
Basically, you will be making the car run less efficent.
When I fitted one (big mistake but I will own up to it!), it actually caused more lag in between gear changes and made the car very jerky when applying or coming off the throttle.
16 January 2007, 08:30 PM
#10
Scooby Regular
Join Date: Aug 2006
Location: ESSEX ...BORN AND BRED PETROL HEAD....................... MANS BEST FRIEND IS A ENGLISH BULL TERRIER
Posts: 1,666
Likes: 0
Received 0 Likes
on
0 Posts
THE ONLY GAIN TO A DUMPVALVE IS TO THE SELLERS WALLET
BEST LEFT ON THE SHELF
KIPS
BEST LEFT ON THE SHELF
KIPS
16 January 2007, 08:31 PM
#11
Scooby Regular
iTrader: (2)
Join Date: Apr 2004
Location: Somewhere in Kent, sniffing some V-Power
Posts: 15,029
Likes: 0
Received 0 Likes
on
0 Posts
PLEASE HIT THE CAPS BUTTON! YOU KEEP SHOUTING! 
And I wouldn't call the 'whoosh' a gain.
Plus you'll suffer all the downsides that I mentioned. But, its your money.
And I wouldn't call the 'whoosh' a gain.
Plus you'll suffer all the downsides that I mentioned. But, its your money.
Last edited by Gear Head; 16 January 2007 at 08:37 PM.
16 January 2007, 08:34 PM
#12
Scooby Regular
Join Date: Aug 2006
Location: ESSEX ...BORN AND BRED PETROL HEAD....................... MANS BEST FRIEND IS A ENGLISH BULL TERRIER
Posts: 1,666
Likes: 0
Received 0 Likes
on
0 Posts
Thread
Thread Starter
Forum
Replies
Last Post
AlienDiCE
Drivetrain
13
26 November 2002 09:26 PM