OP
UTC

Hooked
Vespa LX50 2T 2005
Joined: UTC
Posts: 132
Location: Ireland
 
Hooked
Vespa LX50 2T 2005
Joined: UTC
Posts: 132
Location: Ireland
UTC quote
I have a 2005 vespa lx 50 2t and I'm replacing both air filter sponges with malossi red ones but I'm wondering if I will need to do anything else or upjet the carb

https://www.sip-scootershop.com/en/product/air-filter-sponge-malossi-red-sponge_M1411778

https://www.sip-scootershop.com/en/product/air-filter-sponge-malossi-double-red-sponge_M1414532?q=Air%20filter
@motovista avatar
UTC

Veni, Vidi, Posti
GT 200
Joined: UTC
Posts: 9255
Location: Main Street, Watts
 
Veni, Vidi, Posti
@motovista avatar
GT 200
Joined: UTC
Posts: 9255
Location: Main Street, Watts
UTC quote
Typically no, but if the scooter feels like it's stumbling or not running as smoothly as before, you might want to do a slight upjet. Take out what's already there, and go up about 2 numbers. On the four stroke, sometimes you can go up a couple, but nothing drastic. And it runs and drives just fine without upjetting. The upjet will take advantage of the slight increase in air flow. We didn't get the 2T LX here though, so I'm not as familiar with them.
OP
UTC

Hooked
Vespa LX50 2T 2005
Joined: UTC
Posts: 132
Location: Ireland
 
Hooked
Vespa LX50 2T 2005
Joined: UTC
Posts: 132
Location: Ireland
UTC quote
Thanks, I contacted malossi and they told me to upjet by 10 sizes on my lx50 2t, should I go with the OEM filter sponges or get the malossi one and not upjet it.

I heard not upjetting it can kill the engine but maybe that's only for exhausts
@greasy125 avatar
UTC

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15079
Location: The state of insanity, SoCal
 
Sergeant at Arms
@greasy125 avatar
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: UTC
Posts: 15079
Location: The state of insanity, SoCal
UTC quote
10 is way too many. maybe 2 or possibly 3, but more than likely it'll be just fine without anything.

has anything else been done: derestriction, top end kit, exhaust, different carb?
OP
UTC

Hooked
Vespa LX50 2T 2005
Joined: UTC
Posts: 132
Location: Ireland
 
Hooked
Vespa LX50 2T 2005
Joined: UTC
Posts: 132
Location: Ireland
UTC quote
Thanks

I only got it a few weeks ago so
I don't really know, it will be a fun project
@der_blechfahrer avatar
UTC

Molto Verboso
ET3 & PX150 & GTS 300 Super Sport MY23 & Yamaha Neo's electric
Joined: UTC
Posts: 1898
Location: Berlin
 
Molto Verboso
@der_blechfahrer avatar
ET3 & PX150 & GTS 300 Super Sport MY23 & Yamaha Neo's electric
Joined: UTC
Posts: 1898
Location: Berlin
UTC quote
What do you mean, BOTH filter sponges. You only have the top part.

If you take out the phone dial washer, too, then you'll increase air intake. I don't think the sponge alone will make a lot of difference.
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