Intake "Popping" - Help!

droldsmobileMember

Hi guys... I'm hoping for some advice..

I'm running a Ford Racing Boss 427 Crate Motor (351W block) with an 8 stack ITB Fuel injection system controlled by a FAST EZ-EFI 2.0 ECU.

It has a big cam, but idles nicely around 800rpm. The problem is a "popping" sound that I'm pretty sure is coming out of the throttle bodies while driving at constant speeds. It doesn't happen at idle, and it doesn't happen under acceleration or deceleration.

There is no backfiring from the exhaust, and no flames from the ITB's. I'm pretty sure my timing is set accurately.

Any ideas? Anybody?

Thanks
G

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8/20/162:37 PM

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