All done. Big thanks to FAT PIPES in Kallangur!
Decel pop is still there but very muffled. Overall the system is quiter than what it was with the triflow.  

Look'n good mate.
 
Matt

Just a thought to add on the "deceleration popping"
 
I've found that it can be caused by the carbs going way too lean on throttle shut off.
My very non-technical understanding is that the lean mixture wont ignite in the cylinder, but eventually builds up enough to ignite in the exhaust causing the popping.
You could have a play with idle mixture screws or crack open the butterfly a little more to test the theory.
 
Hope that helps,
 
Graham

Matt75

Look'n good mate.

Matt

 
Cheers Matt
 

TheBrownHornet

Just a thought to add on the "deceleration popping"

I've found that it can be caused by the carbs going way too lean on throttle shut off.
My very non-technical understanding is that the lean mixture wont ignite in the cylinder, but eventually builds up enough to ignite in the exhaust causing the popping.
You could have a play with idle mixture screws or crack open the butterfly a little more to test the theory.

Hope that helps,

Graham

 
Thanks Graham
I've started a new thread here

Leaner fuel mixtures are easier to ignite, eg. Lean mixtures at WOT can cause detonation.

The farting is caused by fuel being ignited post combustion chamber. This can be caused by rich mixtures or retarded ignition timing.

In gear deceleration induces high vacuum under the throttle plates. This can draw more fuel than normal from the idle and transition/progression circuits. The farting can be reduced through careful tuning of the carby and ignition timing.

In reality I would worry too much about it.

I would also have a guess your egr is no longer connected?

egr has nothing to do with deceleration.