Possible boost creep, emergency question
#1
Pistons are gay
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Possible boost creep, emergency question
I think i'm experiencing boost creep. I've been searching up on it and not sure if it's my problem. As some of you know I just installed rb exhaust and i'm hearing a weird noise at 3800 rpm. I'm taking this as the worse case scenario. Tomorrow, i'm having a huge rx7 meet. Of course, i'll be showing off my car. Is it safe to drive with boost creep, considering I don't boost hard? Just under 3800rpm? Or is my car now just a sitting duck?
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Pistons are gay
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Don't have my boost gauge installed yet, I have one just haven't gotten around to it yet. I'm installing tomorrow.
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#8
#10
rotors excite me
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Well you said you're hearing a noise in a mid RPM range, and we can only assume you don't hear it below or above that range. You didn't say that the car bucks, stumbles, or accelerates real fast. If you boost creep badly there should be a notable power increase until you
A) hit fuel cut due to too high of boost
B) run past making real usable power (around 7500RPM usually)
C) pop a line (intake leak)
D) blow the turbo
E) blow the motor
or if you catastrophically break something else... anyway, the point is, what is making you think this is boost creep? Does your gauge max out? Do you have an aftermarket gauge that can confirm the reading? They're known for being inaccurate at this stage in their lives.
A) hit fuel cut due to too high of boost
B) run past making real usable power (around 7500RPM usually)
C) pop a line (intake leak)
D) blow the turbo
E) blow the motor
or if you catastrophically break something else... anyway, the point is, what is making you think this is boost creep? Does your gauge max out? Do you have an aftermarket gauge that can confirm the reading? They're known for being inaccurate at this stage in their lives.
#11
Pistons are gay
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Well you said you're hearing a noise in a mid RPM range, and we can only assume you don't hear it below or above that range. You didn't say that the car bucks, stumbles, or accelerates real fast. If you boost creep badly there should be a notable power increase until you
A) hit fuel cut due to too high of boost
B) run past making real usable power (around 7500RPM usually)
C) pop a line (intake leak)
D) blow the turbo
E) blow the motor
or if you catastrophically break something else... anyway, the point is, what is making you think this is boost creep? Does your gauge max out? Do you have an aftermarket gauge that can confirm the reading? They're known for being inaccurate at this stage in their lives.
A) hit fuel cut due to too high of boost
B) run past making real usable power (around 7500RPM usually)
C) pop a line (intake leak)
D) blow the turbo
E) blow the motor
or if you catastrophically break something else... anyway, the point is, what is making you think this is boost creep? Does your gauge max out? Do you have an aftermarket gauge that can confirm the reading? They're known for being inaccurate at this stage in their lives.
#12
rotors excite me
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You should pick up one of those intake system pressurizing tools. I can't remember who exactly sells them, but they only cost about $25 (there's a website where you can order them) and you pressurize the intake with the car off. It makes finding leaks SO MUCH EASIER, I highly recommend it.
#13
rx-for-my-7
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Pressurizing the Intake Tract
Hey, I was able to accomplish this by fixing and air gun nozzle into the bottom of a peanut butter jar (empty and cleaned of course), the mouth of the jar fit right into the intake coupler before the MAF. You can pressurize it with shop air and actually hear the hiss of the leaking air in the engine bay. Makes it very easy to pinpoint leaks.
Or an unlit propane torch - poke around the engine while it's running and listen for changes in idle speed.
Or an unlit propane torch - poke around the engine while it's running and listen for changes in idle speed.
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