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Old 24 January 2006, 10:24 AM
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Peanuts
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Default Rev needle "flutter"..?

revving round on the 18g, alls well, thing is, at about 6750 on the tacho the rev needle "flutters" a tadge.
no knock detected, no obvious issues with driving, just annoys me a bit.

any ideas please?
Old 25 January 2006, 11:10 AM
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Im still no nearer to solving this...
Old 25 January 2006, 12:20 PM
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check the RPM trace on commander, might be crank sensor or something, but might just be between ecu and tacho, rather than input to ECU
Old 25 January 2006, 12:24 PM
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Paul might be onto something with the crank sensor etc..

Does the CEL still blink with nothing recorded in the sw/sensor check?

Annoying that Datalogit showed nothing..

Did the MAP/Boost solenoid solve the constant CEL?

Simon
Old 25 January 2006, 01:16 PM
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Ive not really been arsed to do anything thhis last week, 'cept drive it like I was meant to

Im hopefully in cahoots with Andrew for a resistor fix to the boost solenoid, I know from past experience its definately the boost solenoid throwing the CEL, tbh it hasnt really bothered me because the knoxk on the commander is in full view anyways.
Ill try a fix at the weekend
Old 25 January 2006, 02:09 PM
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I agree it is not really an issue only it would be nice to sort and move onto the next problem.. also would be easier to see if this rev flutter does illuminate the CEL for sure.
Old 25 January 2006, 02:50 PM
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next problem?
how to force 1.8 bar from an 18g
Old 25 January 2006, 03:12 PM
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I meant sort the boost solenoid / map sensor warning and then go onto the flutter.. lol

I think you have enough boost at 1.65bar.. next move is meth map and / or water injection plus mapped for it.. more timing being the requirement imho.
Or a bigger Turbo

Simon
Old 25 January 2006, 05:00 PM
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I cant see me ditching the 18g for a while yet Simon, I did have a hankering for a garrett, and still will do it when my cdb gets "Zen'd".
for a 2.0 though I dont see the need, especially as Paul, yourself and one would assume Andy are getting very good numbers from them.
I didnt think you could map WI into the powerFC?
I also cant do a meth map until I get my copy of datalogit as I wouldnt want to be caught out on such an aggressive map.

So computer says "yes" to another boost hike then
Old 25 January 2006, 08:32 PM
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You fit the water injection and control it separate to the Power FC but can increase the timing and adjust the fueling to take account of the water injection in the PFC.. iyswim..

The 1S water injection being boost activated you set it to come on at desired boost level etc..

As to more aggressive Meth map, if you knew where to alter on the commander and by how much you could alter for the fuel in the tank.. but anyway surely having not driven it for 3months or more your thurst for more power must be quenched for a bit longer yet?
Old 26 January 2006, 07:32 AM
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lol, true enough, maybe the masochist in me wants more cuts on my hands?
Old 26 January 2006, 09:42 AM
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lol.. nothing much takes the shine off hearing it running again when you did all the work yourself.. like trying make a fist with your cut hands.. lol
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