Piaggio Zip cutting out

[zippie1990]

Hi after a acident 3 months ago my engine will cut out if run of 25-30mph,

my air box is smashed up and i was wondering if it would have anything to do with it? ,i have ordered a k&n style filter to replace and removed air box

Is there anything else it could be?, I have encosed pics

The bike is piaggio zip 125cc 4 stroke 2001

[Nope.]

If the engine is taking in too much air then it could cause it to cut out yes.

Fitting a K&N style filter is NOT the answer. You need to upjet quite a bit in order to fit one and you will probably experience a loss in performance along with massively increased fuel consumption.

You'd be much better obtaining a standard airbox from ebay or a breakers.
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Former: Derbi GP1 50, Sachs XTC 125, Suzuki GSXR 400 GK73A, Kawasaki ZX7R, Suzuki DR250, Yamaha RD350
Current: 2011 Yamaha XT660Z Ténéré, 2003 Yamaha YZR-R1 5PW (In Build), 2009 Kawasaki ZZR1400

[zippie1990]

what happens if i dont upjet and it sounds like its low on petrol it dies right down.

[Nope.]

[Livefast123]

If your airbox is 'smashed up' then you'll be sucking in lots of road crap into your engine / intake system including water which is never good for running.

Intake systems are designed to perform at a specific volumetric value and airspeed. If you modify them then you need to change the jetting as the airflow will be different.

Fitting a chavtastic pod filter is a quick way to more problems. You'll have to upjet to compensate for the increased airflow but that will be pointless as the engine won't be able to get rid of the gasses any quicker through your standard exhaust. They are also exposed and get wet etc.

If you don't upjet then you'll run lean and blow a hole in the piston or the engine will seize Just replace the standard bits and you'll be fine.
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Current ride - Yamaha MT-07