bwalt's MSP build log

Protege's getting a turbo upgrade!

Over the last couple years I collected parts, learned how to TIG weld and produced from scratch a twin scroll T4 turbo manifold to mate a Borg Warner EFR7163 to the FS. It's been a huge challenge but so far I'm happy with how things are coming together.

More to come...
 

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Finished the turbo last weekend. Lacking more progress pics but here it is all installed and running.

Have driven around some, tweaking the fuel map, making sure nothing is leaking or falling off. This thing spools up fast! I'm impressed there's virtually no loss in low end compared to the last turbo.

Wastegate took a bit of messing with to get right. After a few attempts got it set with a 12psi spring. You can really hear this thing means business when the boost comes on. I am happy!

Also re-did my fuel lines using PTFE hose this time. Turns out fuel vapor permeates the regular braided AN hose I had used before. Noticed fuel smell but no leaks, also the nylon braid would turn to dust if you brushed up against it. Bonus is the new lines require different hose ends and I was able to re-use the regular hose ends to make turbo water lines.

Plan is to wrap the manifold next and sort out my transmission.
 

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Making decent power so far 337whp/332wtq. This was a 3rd gear pull from 3500-6500rpm. 17psi peak boost tapering down to 13psi at redline. Need to fiddle with the boost controller or swap a stiffer wastegate spring in so it holds boost to redline.
 

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