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BPU is so 1997
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5,349 Posts
Part #
11900260 Spring Type-RC 0.8-1.2kg/cm2
11900261 Spring Type-RC 1.1-1.5kg/cm2
11900262 Spring Type-RC 1.4-on kg/cm2

They each list for $40.
 

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222 Posts
Boost

I just installed my T78 w/ the orange (low boost) spring and I conencted the side port of the wastegate to the manifold pressure and left the top one open. It runs about 10psi w/ the low spring. I think you can tighten the screw on top to increase the boost off the wastegate. The car feels pretty damn slow at 10psi though :)
good luck
Roger
 

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Roger..
that should be the lowest possible boost you can achieve with that spring....I ordered my spring about a month ago...Greddy is supposedly back ordered on this part! Hopefully it will be in today...cant wait to make a full pull at a whopping 1.1 bar!:)
SH
T78
 
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