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    Polo vento 1.6 MPI NA exhaust mod

    I am going to mod the CAI and ECU mapping for this car and also looking at exhaust manifold mod from 4- 1 to 4-2-1 with performance cat. The exhaust manifold with performance cat is pretty much know how to do it just the catback might need to test with different sizes. Unfortunately the...
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    Polo vento 1.6 MPI NA exhaust mod

    Hi guys , I need some advice on the exhaust mod. I own a polo vento 1.6 MPI NA engine . Engine code CLSA is a EA111 engine. I check all over the internet, looks like no one modify the exhaust before. I want to mod the cat back but i have no idea how many inches of diameter i can increase...
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