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Stopping Overboost With Iw

Finny

By Finny,
in Engines & Forced Induction

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courier33 Enthusiast

courier33

Posted
Posted

Just another point to check, I have a split dump pipe and when it was removed I looked inside it to where the split joins on, and the hole on the main pipe where the split pipe was welded to was no where near as big as the diameter of the wastegate pipe.

There would definately be a restriction to wastegate exhaust in this area. As far as I can see the only way to fix it would be to cut the dump pipe just behind where the split joins, and port out the hole with a die grinder or something.

stolen_s15 Mentor

stolen_s15

Posted
Posted

KKR turbos run a Vband clamp setup, and as far as i know the only dump pipe for them is the one through otomoto (the turbo supplier) so its got nothing to do dump pipes (you can change the design for a v-band much at all) Its got to do with the wastegate design of the turbo itself, every KKR equipt skyline I have been in/driven/seen/read about boost spikes.

Bad exhaust housing/wastegate design, end of story.

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