Why am I not making any boost?
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On The Tree
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From: Schoolcraft, Michigan
Why am I not making any boost? I took my car out yesterday to start tuning it with HP Tuners and according to the gauge I made no boost the whole time I was driving. I had it up to about 4,500 and it was still showing vacuum. I have looked it all over and couldn't see any potential air leaks. Is it possible that my gauge is incorrect or not working right? This is a stock motor with a front mount TC-76 running off of a 7psi spring. Anyone have any ideas?
I took my car out yesterday to start tuning it with HP Tuners and according to the gauge I made no boost the whole time I was driving. I had it up to about 4,500 and it was still showing vacuum. I have looked it all over and couldn't see any potential air leaks. Is it possible that my gauge is incorrect or not working right? This is a stock motor with a front mount TC-76 running off of a 7psi spring. Anyone have any ideas?
Thread Starter
On The Tree
iTrader: (16)
Joined: Apr 2007
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From: Schoolcraft, Michigan
You shouldn't be logging the MAF since you have it failed. But for the boost, I don't believe you went over 35% throttle and you aren't logging boost in the table either. Is your PID correct for boost?
It sucks only having the limited space on the table
It sucks only having the limited space on the table
Thread Starter
On The Tree
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From: Schoolcraft, Michigan
I realized I was still logging the MAF after I finished driving around. I have changed the PIDs and will be making another log tomorrow probably. Even with only 35% throttle I assumed I should be making some at least some boost. I have seen others have boost by 3,000 rpms and I had it up to about 4,500 and the gauge didn't show any.
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Verdad Gallardo I realized I was still logging the MAF after I finished driving around. I have changed the PIDs and will be making another log tomorrow probably. Even with only 35% throttle I assumed I should be making some at least some boost. I have seen others have boost by 3,000 rpms and I had it up to about 4,500 and the gauge didn't show any.
That's why I bought my 9" and sold the working 10 bolt so I was able to recoup some money. The cheapest 9" I could find was through Bob @ EPP. If you pay via wire transfer you save 100 bucks.
Do you have either a bypass or blowoff valve installed? Just because you got up to 4500rpm, if the TPS is too low you may not have loaded the motor enough to make boost, like if you were steady cruising at 85mph, the rpm might be there but very low load.
Jim
Jim
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On The Tree
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From: Schoolcraft, Michigan
That sounds about right. I was just wanting to make sure there wasn't anything wrong before I continued with the tuning. I guess I will have to wait a while now though until I get a new rear end in it.
Also I have a Turbosmart Megasonic BOV.
Also I have a Turbosmart Megasonic BOV.
