flat spot on dyno graph?
08-03-2010, 10:52 PM
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flat spot on dyno graph?
Any ideas what would be the cause of the flat spot between 4000 - 4250rpm?
The spec is:
1.6 CVH EFi
T3 Turbo
MSD 195 Chip
701 Injectors
Uprated fuel pump
Kent cam and pulley
09-03-2010, 06:37 AM
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have you got any more details like a the air/fuel graph or boost pressure graph??
09-03-2010, 06:48 AM
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It probably broke traction. Thats what I'd guess. Or the clutch slipped.
09-03-2010, 07:12 AM
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Yeah if your on a standard clutch it could of slipped when you made peek boost/torque.
09-03-2010, 01:19 PM
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I haven't got any Air/Fuel or Boost pressure graph, thats all they gave me.
I've got an organic clutch fitted, so shouldn't of slipped? Could it be caused by boost dropping off?
09-03-2010, 02:10 PM
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Proper dyno run needed!!
09-03-2010, 02:32 PM
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could it be the chip not mapped 100% for your engine.
09-03-2010, 02:33 PM
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Quote:
Originally Posted by
phil_focus
could it be the chip not mapped 100% for your engine.
IMO, no its not that, it's down to the issues I said above.
09-03-2010, 07:25 PM
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Wheel broke traction or clutch slip just as Karlos and Christian said above mate. The second 'bump' is probably a boost spike before the wategate opens etc.
09-03-2010, 08:13 PM
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Second bump is probably the 'pendulum' effect of breaking and regaining traction.
09-03-2010, 08:41 PM
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good point, i thought it could have broken traction opened the waste gate and then closed it again causing a second boost spike when the gate opened for a second time, but yours seems more plausible ie dyno roller catching up with the spinning wheel etcetc.
09-03-2010, 09:09 PM
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The monkey operator probably didnt strap it down properly! lol
09-03-2010, 09:33 PM
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You mean like
THIS fucking norbert.
10-03-2010, 07:05 AM
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lmao yes!!
10-03-2010, 02:42 PM
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No idea if this helps confirm anything, but I've got a video of one of the runs aswell..
http://www.youtube.com/watch?v=O-a0YyUGoxM
Aslong as its the clutch slipping or it just breaking traction I'm not too worried.
10-03-2010, 03:31 PM
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I can't hear any violent wheel spin or clutch slip......
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chart ,
clutch ,
dyno ,
dynograph ,
engine ,
flat ,
flatspot ,
graph ,
opens ,
represent ,
slip ,
slipping ,
spot ,
spots ,
wastegate
09-03-2010, 06:37 AM
