This is the process for the N249 delete on the BAM engine. Very similar to other variants, but the SAI has to be considered on others. I always use 3mm silicone vac line, even though the n249 uses 4mm, as 3mm fits nice and snug, and ensures it wont pop off. The Diverter valve fitting is 4mm, but don't worry, it will still accept 3mm line on it.
If you blow up your engine, then you've done something horribly wrong! it should go without saying, but if you do destroy your car, it's not my fault!
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