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Old Yesterday, 06:07 AM   #1
zeropoint OP
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Slight chop from one exhaust at idle

I just noticed the other day that one exhaust is blowing slightly differently to the other. It's subtle but if I put my hand close to it get a "pap, pap, pap, pap" sound whereas as the other has a smooth edged rumble....


Anything I should be checking ?
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Old Yesterday, 10:32 PM   #2
Zuber
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Throttle Position Sensor voltage being off will cause this.
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Old Today, 01:44 AM   #3
Hodgo
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Balance carbs.. Simple.
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Old Today, 02:11 AM   #4
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Quote:
Originally Posted by Hodgo View Post
Balance carbs.. Simple.
and check TPS settings... or get a 2 - 1 system and be really confused.

braaap! screwed with this post Today at 02:11 AM Reason: speeeling
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Old Today, 03:02 AM   #5
zeropoint OP
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Thanks guys. Hodgo it's a 990 efi....so do I have to look into throttle body sync ?

Zuber - is there a thread you can point me too for checking the voltage ? And am I in to Tune ECU to adjust it ?
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Old Today, 03:21 AM   #6
zeropoint OP
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is this the right tool for the job ? and cross check with tune ecu ?

http://www.amazon.co.uk/dp/B00DHGX2D...7SP97NC5ZCJBRN
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Old Today, 03:39 AM   #7
Sumi
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It also can be totally normal.
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Old Today, 04:47 AM   #8
Boatman
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^^^^^^^^ Yup.

Doesn't mean anything is wrong. There is a crossover between the right and left pipe.
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Old Today, 05:56 AM   #9
zeropoint OP
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It also can be totally normal.

Ok....thanks.
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