popping under boost

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May 11, 2009 | 08:10 AM

cran

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From: Huntsville, Alabama

popping under boost

If I roll into throttle, right where it transitions from vaccum to boost it popps and hesitates for a second and then it it fine. Does anyone know what would cause this. I have a aps kit on 346, twin pumps with second pump turned on by e-boost.

May 11, 2009 | 08:24 AM

moehorsepower

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From: Texas

popping out the exhaust or intake? If the intake then you probably dont have enough timing in that area..

May 11, 2009 | 08:55 AM

pwrtrip75

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From: Janesville, WI

bad spark plugs

May 11, 2009 | 08:55 AM

Fireball

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From: Cecil County Raceway!!!

a lean spike maybe...

May 11, 2009 | 12:55 PM

KWIKKAR

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From: Fort Worth, TX

Your tuning is off, and or your turbos are bad. Mine did that when my turbos were going bad.. That sucks.

May 11, 2009 | 01:18 PM

VINCE

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From: Valrico, Florida

Check the plugs..

May 12, 2009 | 05:01 AM

crashly

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From: australia

Quote:

Originally Posted by cran

out the exhaust or intake ??
intake is lean , or wrongly maped fuel curve
exhaust is rich

also,
close the spark plug gap up, and see it it improves.
could also be the ignition not good enough