i've noticed since owning this new zed, acceleration is far better than the uk spec one i've got (even with stage 1 fitted to that) but i have noticed during decelleration i'm getting popping through the exhaust it's quite regular (every 2 or 3 seconds) just wondering what could be causing this? the car is decatted so no issues with blowing holes in cats etc but i am a little worried about engine damage issues

over run fuel cut? is that in the mapping?

Leo

the person that tuned it should know to advise their client/friend/customer that excess unburnt fuel and popping n cracking is of no gain and simply a waste of fuel and no good for the engine.

 

Fouls plugs

Wears valves

Generates uncessary combustion chamber pressures

raises exhaust gas temperatures and simply speeds up engine wear therefore reducing the life of piston valves as well as coking up the chambers and valves and piston crowns with solid carbon (which also increased the chances of detonation)

 

 

:yawn:

 

I'm pretty sure my mate wouldn't have risked an engine he's spent many thousands tuning just so he can enjoy a bit of snap, crackle and pop. My main point was that the car may be set up to do this on purpose and to my knowledge that wouldn't necessarily kill the engine. So - it might be nothing to do with a failing part, pipe etc - hence why I suggested getting a proper diagnosis done.

 

And when I get my engine mapped I'm going to ask for enough overfuelling on the overun to use the exhaust as a grenade launcher:tt2:

 

Stick a fork in me - I'm done

think i've found the cause of this problem on mine the imjector connector on number 6 cylinder is coming loose, found it when it started popping and the intermitant misfire started just after, looks like new injector connectors next