Dramier Posted August 3, 2005 Share Posted August 3, 2005 So apparently the RB25 engine has a factory EBC (Electronic Boost Controller) like the SRT-4 and WRX employ. My car seems to run 7psi in 1st, 10 in 2nd, and 12 in the rest of the gears... Does anybody know exactly what EBC is used, where it's located and what the bypass procedure is for it? I would like to stabilize my boost to 10psi in all gears since I've got the FMIC to cover it. Quote Link to comment Share on other sites More sharing options...
Guest JAMIE T Posted August 3, 2005 Share Posted August 3, 2005 My best guess would be to follow the vacuum lines off the intake manifold and see what they connect to. That should get you close. Good luck, this is one of the reasons I prefer to build my own cars. So, I don't have to hunt for stuff to trouble shoot it. Not saying I would not have bought the car you did, I would be in the same boat as you right now. And the kicker is that no Haynes manual will ever help, LOL!!! Quote Link to comment Share on other sites More sharing options...
cheftrd Posted August 3, 2005 Share Posted August 3, 2005 Follow the line coming off of the actuator for the turbo. If it's directly attached to a pressure port, You're experiencing boost creep. This is common in modified engines with cams, etc, running the stock turbo. The stock wastegate hole diameter can't dump enough exhaust. From the factory, there is a T line goes to a cylindrical solenoid that bleeds off boost from the actuator. Another system uses the solenoid in line. This is usually a scramble boost device, though. It bleeds boost going to the actuator, or stays shut, not allowing boost to hit the actuator too soon and spools the turbo quicker. It reaks havok with aftermarket boost controlers and must be removed to run one. Remove this and plug the line (or route a new one). Quote Link to comment Share on other sites More sharing options...
Dramier Posted August 7, 2005 Author Share Posted August 7, 2005 Great, thanks yet again for a valuable piece of advice. Jamie, I didn't 'buy' the car. I had it built. This is called learning about a new engine and tweaking it the way you want. I'm pretty sure it isn't boost creep though. It's too precise and regular it seems like. In my experience, boost creep is a gradual kind of leak.. This is very precise.. It runs exactly 7psi, then 10, then 12.. Never changes. I'll still trace the lines and see what's connected. I was merely guessing that it had some sort of factory EBC similiar to the SRT-4's and WRX's. Thanks again. Quote Link to comment Share on other sites More sharing options...
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