Notices

antilag question ?.

Thread Tools
 
Search this Thread
 
Old 02 November 2011, 09:01 PM
  #1  
howes124
Scooby Regular
Thread Starter
iTrader: (11)
 
howes124's Avatar
 
Join Date: Jun 2009
Location: lowestoft
Posts: 946
Likes: 0
Received 1 Like on 1 Post
Default antilag question ?.

Just wanted to get a idea wot A/L is, I had it mapped onto my old scooby but never actually found out wot it is,

Question is do you have to have it mapped or can you do it another way ?.
Old 02 November 2011, 09:12 PM
  #2  
leecalcars
Scooby Regular
iTrader: (37)
 
leecalcars's Avatar
 
Join Date: Jan 2005
Location: never far away from my impreza
Posts: 7,843
Likes: 0
Received 0 Likes on 0 Posts
Default

pops and bangs !

or as my misses says pots and pans

simtek ecu you can have it mapped in not sure on other aftermarket ecu's
Old 02 November 2011, 09:24 PM
  #3  
Tidgy
Scooby Regular
 
Tidgy's Avatar
 
Join Date: Sep 2004
Location: Notts
Posts: 23,118
Received 150 Likes on 115 Posts
Default

was it pops and bangs or anti lag?
Old 02 November 2011, 09:38 PM
  #4  
Jolly Green Monster
Former Sponsor
iTrader: (4)
 
Jolly Green Monster's Avatar
 
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes on 2 Posts
Default

antilag is a function available on certain aftermarket ecus (simtek, syvecs, gems, autronic etc) and needs mapping in / setting up and when switched on the idle valve is openned to supply air and the idle speed is therefore increased and ignition and fueling are adjusted to cause unburnt fuel to explode in the manifold to spin the turbo.. therefore on a gear change for example the idea is that it will be quicker to return to full boost when you come back on the throttle.

In reality on most cars it is just used to create lots of noise and some flames from the exhaust, there is a small gain but really the idle valve doesnt supply enough air, on true full on antilag (which wouldnt want on a road car) the throttle is either jacked open or another valve is used to supply the air, sometimes direct into the exhaust.

For example - http://www.youtube.com/watch?v=WTAPpsL2xOU

Simon
Old 02 November 2011, 09:42 PM
  #5  
howes124
Scooby Regular
Thread Starter
iTrader: (11)
 
howes124's Avatar
 
Join Date: Jun 2009
Location: lowestoft
Posts: 946
Likes: 0
Received 1 Like on 1 Post
Default

Seen that video pretty awesome sound, I have got to the bottom of my running problem, A small hole in my fmic :-(, So already for remap now just got to book time of work ;-), But i have to say my car sounded awesome with the fault but wouldn't idle lol.
Old 02 November 2011, 09:45 PM
  #6  
TH3_5T1G
Scooby Regular
iTrader: (15)
 
TH3_5T1G's Avatar
 
Join Date: Jul 2009
Location: Somewhere halfway between heaven and hell, some call it earth!
Posts: 1,305
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Jolly Green Monster
antilag is a function available on certain aftermarket ecus (simtek, syvecs, gems, autronic etc) and needs mapping in / setting up and when switched on the idle valve is openned to supply air and the idle speed is therefore increased and ignition and fueling are adjusted to cause unburnt fuel to explode in the manifold to spin the turbo.. therefore on a gear change for example the idea is that it will be quicker to return to full boost when you come back on the throttle.

In reality on most cars it is just used to create lots of noise and some flames from the exhaust, there is a small gain but really the idle valve doesnt supply enough air, on true full on antilag (which wouldnt want on a road car) the throttle is either jacked open or another valve is used to supply the air, sometimes direct into the exhaust.

For example - http://www.youtube.com/watch?v=WTAPpsL2xOU

Simon
Is the subaru in the Vid running true Anti-lag or the Anti-lag most have on their road cars?
Old 02 November 2011, 09:45 PM
  #7  
Jolly Green Monster
Former Sponsor
iTrader: (4)
 
Jolly Green Monster's Avatar
 
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes on 2 Posts
Default

lol yes that wouldnt help..

this car on a simtek? or esl board? cant remember.

drop me an email and we can sort a date Simon @ jollygreenmonster.co.uk

Simon
Old 02 November 2011, 09:47 PM
  #8  
Jolly Green Monster
Former Sponsor
iTrader: (4)
 
Jolly Green Monster's Avatar
 
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by TH3_5T1G
Is the subaru in the Vid running true Anti-lag or the Anti-lag most have on their road cars?
believe that is true antilag but you can get that sound on road setup.

It is also not that difficult to do full on antilag on road car, but the main issue is the lack of brake vaccum when manifold is around atmospheric pressure.. so need brake vaccum pump or non servo assisted brakes.

Simon
Old 02 November 2011, 09:48 PM
  #9  
howes124
Scooby Regular
Thread Starter
iTrader: (11)
 
howes124's Avatar
 
Join Date: Jun 2009
Location: lowestoft
Posts: 946
Likes: 0
Received 1 Like on 1 Post
Default

Yep will pesty my boss from tomorrow, But sadly i work away sunday to friday, Do you do the odd weekend at all ?.
Old 02 November 2011, 09:54 PM
  #10  
53
Scooby Senior
iTrader: (41)
 
53's Avatar
 
Join Date: Dec 2005
Location: Standing Up
Posts: 16,742
Received 4 Likes on 3 Posts
Default

Simon did a great job on my antilag lol it's great fun but I have stopped using it tbh.

It's wasted on a road car and too noisy for track, so unless you want it for tunnel runs etc I wouldn't bother second time round

For the performance gains (which I've never seen) I would go for some mild pops and bangs just for fun and pass on the ALS.
Old 02 November 2011, 09:56 PM
  #11  
Jolly Green Monster
Former Sponsor
iTrader: (4)
 
Jolly Green Monster's Avatar
 
Join Date: Jan 2001
Location: ECU Mapping - www.JollyGreenMonster.co.uk
Posts: 16,548
Likes: 0
Received 2 Likes on 2 Posts
Default

possibly.

drop me an email and I am sure we can sort something
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
KAS35RSTI
Subaru
27
04 November 2021 07:12 PM
slimwiltaz
General Technical
20
09 October 2015 07:40 PM
IanG1983
Wheels, Tyres & Brakes
2
06 October 2015 03:08 PM
Brzoza
Engine Management and ECU Remapping
1
02 October 2015 05:26 PM
the shreksta
Other Marques
26
01 October 2015 02:30 PM



Quick Reply: antilag question ?.



All times are GMT +1. The time now is 02:12 PM.