Power falls off bad around 720 HP
#18
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It has the standard springs that come with the BR Stage III head. So whatever come with them is what I've had on there for a while. I got the head in Feb 2009.
What I can tell you is that my sweet driving skills has made the car rap put and bounce off the rev limiter a few times so maybe it damaged them then. Again this is due to my awesome (see crappy) driving skills.
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I've been told (if you look here #23 https://www.evolutionm.net/forums/ev...o-sheet-2.html) that smaller one would be better.
I am hitting like 6000-62000 full boost so putting the 1.15 would move that to around 9000 rpms...
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If I recall boost stays around 35 and doesn't move. It stays on strong.
I had a similar problem with my 4088 and changed the housing to a larger one. Added more fuel. Did this, did that. Cost me a ton of money and ya know what it was..old turbo technology and I maxed the 4088 out at 674 HP. As soon as we bolted the 3794HTA on it shot straight up (HP wise that is) to where we are at now on the first pull.
I had a similar problem with my 4088 and changed the housing to a larger one. Added more fuel. Did this, did that. Cost me a ton of money and ya know what it was..old turbo technology and I maxed the 4088 out at 674 HP. As soon as we bolted the 3794HTA on it shot straight up (HP wise that is) to where we are at now on the first pull.
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Aaron