Stainless Steel Street/Track Long-Tube Header – E30 325i/s/x

$640.00

Each

Out of stock

Category: SKU: M20STG2 Tags:

Product Description

Finally, after 8 months of testing, we’re proud to release our Stage 2 Street & Track long tube headers for the M20 engine. We’ve designed these to be the best fitting (E30 chassis) and best performing headers possible. These headers feature 1.5″ primary tubes and 2.25″ open collectors which testing has shown as ideal for a street hot-rod engine or semi-agressive race build.
Made in USA.

Fitment:

-Fits Left-hand-drive 5-speed E30 325i/s and 325ix (not intended for use on right-hand-drive cars or those running automatic transmissions).

Note: The headers are made from 409 stainless steel. To further prevent under hood temperatures, consider ceramic coating (see main photo above). Adding ceramic coating option can add 2-4 weeks of lead time before the item ships out.

Note 2: We’ve made these with open collectors and without an 02-bung. A competent shop can either run a custom exhaust or make a connector to the existing exhaust.

M20 Long Tube 02 sensor placement: 02 bung placement is up to you, there are two schools of thought regarding placement.

1) Stock placement would dictate the bung would need to go midway down one of the runners, the upside to this would mean that you wouldn’t need to lengthen the wires. The downside is this is a very poor place to run the 02 sensor with the long tube headers since the 02 readings would be limited to one cylinder.

2) 02 sensors (especially widebands) like to be mounted in a place shortly after the convergence of a number of the primary tubes so that it’s readings are most accurate. This would mean it’s best position would be on one of the collectors (probably the inboard side collector),
or even more ideally on a subsequent X-pipe mounted behind the collectors. This would mean running longer wires, but in our opinion it would be money/time well spent.

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