we have a stock rb25 with a holset hc1 at 18 psi makeing 402whp on a dynojet
we re looking for anyone that has 400+ hp to share info with us
-hopefully we can find alot
we re planing to push ours harder but slowly -each time we up the boost i ll post the video
here s videos of ours
this is on e85 and methanol injection
1000cc and walbro 255lph hp