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I ordered vespa sport exhaust (part number 1A020151) for GTS300 in which the official vespa web said it is compatible with the new GTV300 2023, when I tried to install it, apparently it does fit to the header

Anyone can help me solve this problem?
Is there any part I should change using which model engine for the header?

Thanks
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
The header pipe should be like this, but mine is different
The header pipe should be like this, but mine is different
⚠️ Last edited by cokycok on UTC; edited 1 time
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2019 GTS300 Supertech E3 55,000km
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That exhaust is for the E5.
Your scoot is E4 (that's clearly an e3/4 header in your pic).

To make that exhaust fit you'd need to buy an E5 header
⚠️ Last edited by SteelBytes on UTC; edited 1 time
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Do you mind help me, which part number should I buy?
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honestly I don't think you should try. The E5 header has an extra catalytic in it and I think the E5 ecu has a different mapping. So sticking an E5 header on yours would be a mismatch.
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However this exhaust is actually homologated made by arrow for vespa, I took a sneak peek into the hole inlet I saw there is a catalytic converter inside the beginning of the muffler, so the mapping would still match I guess, if I can use the long header then perhaps I can detach the cat inside it coz the mufffler has catalytic inside, what do you think?
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2019 GTS300 Supertech E3 55,000km
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I recommend not using it at all.

Buy an exhaust designed for an E4 HPE GTS.


Note: In Asia Pacific we don't get the E5 of either the GTS or GTV.
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cokycok wrote:
Do you mind help me, which part number should I buy?
I don't have experience changing an E4 to E5, but you would need to buy an E5 Header Manifold as a place to start as others have stated too. (Link Below)
You may need to change your Lambda Sensor too.
You might consider talking to your Local Vespa Dealer as there might be some other engine settings that need to be addressed, or it could connect and run great ... good luck.

https://www.sip-scootershop.com/en/product/exhaust-manifold-piaggio_PI017571
⬆️    About 4 months elapsed    ⬇️
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I finally purchase E5 manifold and decat it then perfectly fitted
The result, Looks nicer and the sound is more characterized
Send you some pic of it
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Rızoma footpeg
Rızoma footpeg
Puig mudflap
Puig mudflap
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Rızoma shoe stand
Rızoma shoe stand
Under seat bag
Under seat bag
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Great job fitting the new e5 exhaust, it looks really great, the bike looks super nice.

Does the motor run ok or did you need to change the mapping to accommodate the new exhaust?
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Vespian wrote:
Great job fitting the new e5 exhaust, it looks really great, the bike looks super nice.

Does the motor run ok or did you need to change the mapping to accommodate the new exhaust?
For the time being the motor runs super well but haven't change any mapping to its stock
Perhaps after some long rides then I will be posting the update
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