Exshaust for 4.2 efi with extractors

Hi All,

Loving all the info on the forum, I have extractors on my troll, 4.2 EFI just wondering what to fit from the extractors back, bit more noise is not an issue. Is it worth it for power gains? She is running LPG as well and will have a snorkel soon if that makes any difference.

Cheers

Travo

Quote:

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Originally Posted by Travo

Hi All,

Loving all the info on the forum, I have extractors on my troll, 4.2 EFI just wondering what to fit from the extractors back, bit more noise is not an issue. Is it worth it for power gains? She is running LPG as well and will have a snorkel soon if that makes any difference.

Cheers

Travo

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Mine used to have 2.5 inch with one high flow muffler. It had an awesome note to it but it did drone a fair bit... should have put a hot dog muffler in it as well.

Thanks Winnie was there any real performance gain?

Quote:

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Originally Posted by Travo

Thanks Winnie was there any real performance gain?

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There was but it wasn't huge.

2.5 would be the biggest you'd want to go. and well worth it to get the gases out
as fast as you can.

Yet another job on the list haha