displaying posts 1 to 10 of 10

Author Subject: Help with Rolling road graphs
razzario

Junior User

Location: cleckheaton

Registered: 11 Nov 2009

Posts: 95

Status: Offline

Post #1
never had a car on the rollers until saturday when i ran my s16. The spec is totally standard apart from a decat and 3" magnex and a pipercross induction kit:





on the first graph showing afr, just after 3.5k the graph goes mad and my power curve flattens out. The guy operating the rollers suggested my fuel pump maybe showing its age a bit??? Any other opinions ???

Like i say its the first time i've had a car on the rollers Smile
Posted 1st Mar 2010 at 16:02
jib

Seasoned Pro

Location: Doncaster

Registered: 21 Feb 2008

Posts: 1,842

Status: Offline

Post #2
I know the problem.......you went to RS tuning LOL
Posted 1st Mar 2010 at 17:56
soton_s16

Senior User

Location: Southampton

Registered: 18 Jun 2007

Posts: 703

Status: Offline

Post #3
Sorry I can't really help. But my S16 is similar spec to yours; Magnex, decat, with the only difference being it has a GTi6 inlet fitted. May be helpful to compare the graphs? (results are at the wheels)

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Posted 1st Mar 2010 at 19:35
razzario

Junior User

Location: cleckheaton

Registered: 11 Nov 2009

Posts: 95

Status: Offline

Post #4
jib wrote:
I know the problem.......you went to RS tuning LOL


lol every car seemed low to me
Posted 1st Mar 2010 at 19:52
phillipm

Seasoned Pro

Location: Rotherham

Registered: 15 Oct 2006

Posts: 20,607

Status: Offline

Post #5
Seems to be running a bit rich up top, is the ACAV system all working correctly?

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Posted 1st Mar 2010 at 22:19
welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

Status: Offline

Post #6
Peak torque is around where its meant to be, usually gets shifted up a thousand RPM when the ACAV doesn't work as they should.

I think they do run fairly rich on WOT anyway.

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Posted 1st Mar 2010 at 22:39
adam b

Seasoned Pro

Location: The Nam

Registered: 24 Jan 2006

Posts: 12,828

Status: Offline

Post #7
Looks ok really - power/torque isn't tailing off suddenly at the top etc.

Was this just at a RR day, or did you go there for a reason to find a specific problem?

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Posted 1st Mar 2010 at 22:48
razzario

Junior User

Location: cleckheaton

Registered: 11 Nov 2009

Posts: 95

Status: Offline

Post #8
it was an rr day, acav is all set up and working fine as far as my internet surfing can tell me
Posted 2nd Mar 2010 at 03:02
cooper666

Senior User

Location: doncaster

Registered: 27 Nov 2009

Posts: 778

Status: Offline

Post #9
jib wrote:
I know the problem.......you went to RS tuning LOL


+1 Clapping

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Posted 2nd Mar 2010 at 03:06
petert

Newbie

Location: Sydney

Registered: 18 Mar 2007

Posts: 38

Status: Offline

Post #10
Looks normal to me. ie 125hp at the wheels.
Posted 2nd Mar 2010 at 04:04

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