hi
Im researching 6 branches at the minute and i am aware of many choices, obviously btb being one of the top (but their extremely pricey!), im not in desperate want for a 6 branch as i presume the logs are pretty free flowing anyway and will do for a while until i start "modding" the engine.
anyway i have came across two that i have heard of the companies but not really heard anything about the manifolds they do,
the first is direnza, i know their intercoolers are pretty good but does anyone know of anyone using their manifolds?
http://www.direnza.co.uk/bmw-e30-exhaust-manifold.html
the second is fritzbits, i have heard of their backboxes blowing baffles and their other bits of pipes not very well made but what about their manifolds same again know anyone with one what are they like ?
http://www.fritzsbits.co.uk/shop/produc ... 20-engine/
opinions on both would be greatful and helpful
thanks
eric
6 Branch B25 Manifolds
Moderator: martauto
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eric792
- E30 Zone Newbie

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1991 318i Touring M20B25
Rolling On Steelies
Rolling On Steelies
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reggid
- E30 Zone Squatter

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fritz look like they have too short of primary pipe length
other looks like one of many btb reproductions?
other looks like one of many btb reproductions?
E30 325is with M20B31
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Grrrmachine
- E30 Zone Wiki / Team Member

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A summary of all the known M20 manifolds is here:
http://www.e30zone.net/e30zonewiki/inde ... #Manifolds
http://www.e30zone.net/e30zonewiki/inde ... #Manifolds
'89 325i Touring | Touring Resto Thread | In-Dash Screen install
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G-Bear
- E30 Zone Squatter

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Based upon no research and more just grazing through threads on here over the couple of years.. BTB seems to be the main flavour. I would reason with Wiki, its a powerful resource.
I'm sure a few more heavyweights will come along and share their wealth.
I'm sure a few more heavyweights will come along and share their wealth.
