When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I've been trying (without being able to get a good bite on it!!!) to pry on the inner part of the clamp for fear of breaking the spot weld on the outer part. Should the outer part stand up to pretty hard prying?
I sprayed in from back there. What do you do with the angled crow bar. I can't figure out how you land on the clamp from under there. It was hard to hit the clamp with the penetrating oil spray.
I loosened the bolts at the manifold and had the top two parts of the clamp loose. I knew a tap with a hammer would get it, but I was focusing on tapping the clamp. Once I figured out that any tap should work, I went a got a piece of metal and gave the collector a love tap. Popped right off.
Up pipe replacement didn't change a thing. This isn't WOT but it shows the EBP noise.
I'm wondering if it could be the EBP sensor (I think it may be flaky anyway, but I can't created a test using compressed air to duplicate the noise).
Is it possible that it's the EBP valve?
When I had the turbo off the plate move freely and the ebp valve did seem like it had pretty good tension holding it open. How does the valve fail , could it be flaking out and partially shutting the butterfly when there's oil pressure?
[EDIT]
I managed to stick a phone in the engine by the EBP actuator. I let it idle for a few seconds and revved it up to 1500 RPMs or so. I saw NO movement.
[/EDIT]
I was just noticing you have a very zoomed-in scale, and my eyes are "calibrated" to see the line on a scale of 0-55. Your EBP bounces are about 1 PSI, so I need to review some logs to see what normal fluctuation looks like on such a tight scale.
Ah... I think I spotted the confusion. Those are hundreds of samples, not a dozen or so. When analyzing a WOT run, it is almost never more than about 30 samples on a fast scangauge like Torque - or 20 on a slow one like AE. A larger scale and a smaller sample will make the whole chart look smoother. I suspect your work helped, but the scaling on your graph made things look worse than they are.
OK... It's official: Something ain't right. I reviewed a number of logs from several trucks and scan tools, and the lines look smoother than that when all is well. I hate to suggest a new EBP sensor (because of cost), but the armory of options now has an echo in the room.
That being said, a new sensor will not address low boost - to my knowledge.
Forget those wastegate graphs. The PID is only getting sampled every 70 seconds or so. I'm not sure yet if I can control the sampling rate for different pids.
