Exactly my thought as soon as I seen that picture. Been there, done that.
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High mileage terminator boot issues
- Thread starter mgt351
- Start date
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I thought this was about IRS boots leaking.
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Does your car still have the boost solenoid valve in play?
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Yes
So I did the boost bypass based off the write up I saw on here.
It makes boost like expected when I bypass the solenoid, however the a/f is not dropping down so there’s something going on there
A/F is staying on the rich side? Is that what you are saying?
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No it’s lean when bypassed
When the solenoid is hooked up it drops into the high 12s @5psi
OP meant "boost-issues". LOL. When I saw the title, I thought the same thing until I read his post.
Right, it wouldn’t let me change the title
You didn’t unhook the vacuum to the fuel pressure sensor did you? Also, if your making more and going lean, that is going to be tube related, unless you have a vacuum leak or something else mechanically wrong.
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No I teed into the FPS line and made sure it was hooked up
I know nothing about the tune that is in the car but do have the x cal 4 that’s married to it
Why would it only make 5psi with the solenoid hooked up but full boost with the bypass? I also tried another solenoid that I have from my other car and it still made 5psi with either solenoid
MAP sensor could be dirty/damaged. For some reason, it is opening at 5 psi. We are having to assume that your boost gauge is accurate as well. Your boost solenoid is being told to open for reason. I think the tune needs to be verified if possible.
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By map sensor you mean iat2?
How can I verify the tune
Yes, to the first question. As for your second question, plug in your X4 and see if there are any custom tunes loaded on it. Some tuners put their company name on the tune as well. So, if you get you could call the tuner for assistance.
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X cal only shows the pcm cal code and 93
I swapped map sensors and no change there
I swapped map sensors and no change there
I would get in touch with a tuner and do some data logging and have them review your logs. This one is a hard one to fix without more info.
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