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Do some grinding in the stock manifold's runner inlets to make them line up with the exhaust ports a bit better. Probably also possible to clean up around the collector area a little bit. I'm sure someone has documented this job on here. It's worth doing if you're looking to push the limits of the stocker.

Do some grinding in the stock manifold's runner inlets to make them line up with the exhaust ports a bit better. Probably also possible to clean up around the collector area a little bit. I'm sure someone has documented this job on here. It's worth doing if you're looking to push the limits of the stocker.

Do you think that would be better than die grinding some of the dodgy welds on a cheaper manifold? Surely a cleaned up cheaper manifold would give better gains in power and response than a die grinded stocker?

^ Stao from Hypergear has tested numerous turbos on stock vs. aftermarket manifolds.. the stock one always produced better results - in terms of response, however outright power wise, aftermarket ones produced more power however with some added lag.

Do you think that would be better than die grinding some of the dodgy welds on a cheaper manifold? Surely a cleaned up cheaper manifold would give better gains in power and response than a die grinded stocker?

The risk is still that dodgy welds you can't/don't reach may still trash your turbo. At least the factory manifold is known to be able to do a certain amount of power completely stock, improve a certain amount above that if you clean it up a little, and not put the turbo at risk. All for almost no money.

^ Stao from Hypergear has tested numerous turbos on stock vs. aftermarket manifolds.. the stock one always produced better results - in terms of response, however outright power wise, aftermarket ones produced more power however with some added lag.

Ahk, added lag? Surely not with the quality ones though?

Might just keep the stocker for less hassle

Edited by s213b

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