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Discussion Starter · #1 ·
Seems to not be any easily accessible information out there for newbies on this, so hopefully it will save some people some frustration.

From the factory you will have the small nipples all tied together and will go to the FPR and the map sensor.
The larger set of nipples will have the middle 2 tied together and running to the kleen air system. The outside nipples may be capped or used for other emissions purposes. Most bikes will have all this deleted long ago.

The stock map sensor should not see boost pressure, but we do want the FPR to see boost and vac as it's a nice 1:1 reg provided to us right from kawasaki.
You will need to get a small check valve, 1/3 psi cracking pressure is recommended. Put this in so that it vents boost, but holds vac in place of the fpr. Yes it's technically a boost leak, but literally a drop in the bucket for the cfm that even a small turbo makes. This will let the map sensor read vac, but protects it from boost. Next redo the vac lines on the 4 large nipples to tie together like the smaller set. I use 5/32 washer fluid/vac line for the bigger ones. You will be using this group for the fpr and is a location to get a vac/boost signal for a BOV. A bov needs to see both vac and boost to operate properly. If you aren't running one, just mirror the other side omitting 1 T fitting. This is NOT a location for a boost signal for a waste gate. Those do not like to see vac. Go to the air box or turbo for a boost signal for your gate.
Next up, zip tie everything. Not really required for running, but if you get a small backfire during the tuning and you blow off a line, you will be sorry you didn't take precautions. Small ties work best.
Watch for cracked lines and replace anything that looks suspect.
The fpr does not have a barb, so I like to use the smaller sized line that fits it tightly and double zip tie it for extra safety. If you're having trouble fitting the vac lines to the t fittings (especially the smaller line to a larger T) , a trick i use is to get a little wd40 or similar on some smooth needle nose pliers and shove it in the line and twist a few times to stretch it out a little. They go much nicer after this "break in" and will shrink back up later.

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