Inconsistent Boost Levels......
#22
T you shouldn't be getting this much inconsistency! Something is wrong. If you can get under the car take a look at the lower sensor in the charge tube and see if it's flat. If it has an angle to it, the tech did not modify the sensor properly. When it is sealed all is well, but it may leak under certain conditions, like when warm. This will give inconsistent boost.
#23
Anyways, now back after the brake fix, and I assume a PCM reflash. I asked them also to look at the issue, but they did a road test and didn't seem anything out of place. Well, considering the dealer's likely sold 3 SS's all year, a subtle change wouldn't be picked up by a tech, they have no base for what it used to be like. On my first first couple drives, no issue...guage still at the level that was noticeably lower then I remember when coasting and idiling. I think that "lower then is used to be" rating means that when I hit the gas, it contributes to the more noticable factor, that being that the engine seems to be revving a bit too high , along with lower boost levels when putting the gas down, then it used to. I took note of the RPM...at 60 mph, its running at 2K RPM...10 seconds of coasting, getting down to 45-50MPH, its still really close to 2K RPM.
That seems strange...again, I am going by this all on feel, I never really paid attention before...it just seems that the vaccuum pressure is greater then it used to be before the late December reflash to try and fix the the brake thing, and more noticeable, is that I think the engine is running harder under accleration, at the expense of using turbo "power".
It not a big deal, and not going to worry about it until the weather gets a bit nicer, and I do want to enjoy the car rather than nitpick over a minor thing.
I am sure there will be a proper reflash if I get the Stage get done later in the spring...if not, the next time it goes in for an oil change, I will have them possibly look into it a little more indepth, technically, to see if the turbo is being utilized, or if the engine is working too hard.
I'l also look into the wastegate mod I've seen on this forum...not so much as a mod, just to see if the reported issue of issues with springs in the wastegate is afflicitng me too, which is causing lower boost in others.
That seems strange...again, I am going by this all on feel, I never really paid attention before...it just seems that the vaccuum pressure is greater then it used to be before the late December reflash to try and fix the the brake thing, and more noticeable, is that I think the engine is running harder under accleration, at the expense of using turbo "power".
It not a big deal, and not going to worry about it until the weather gets a bit nicer, and I do want to enjoy the car rather than nitpick over a minor thing.
I am sure there will be a proper reflash if I get the Stage get done later in the spring...if not, the next time it goes in for an oil change, I will have them possibly look into it a little more indepth, technically, to see if the turbo is being utilized, or if the engine is working too hard.
I'l also look into the wastegate mod I've seen on this forum...not so much as a mod, just to see if the reported issue of issues with springs in the wastegate is afflicitng me too, which is causing lower boost in others.
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robotworkshop
SS Specific Service Issues/Repairs
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06-21-2013 09:59 AM