Need Advice - No Power & BAD MPG

Q&A regarding engines, turbos, and intercoolers and power upgrades

Re: Need Advice - No Power & BAD MPG

Postby 88gt4DE » Tue Aug 07, 2012 3:38 pm

DId you have to drill out the broken stud ?
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Re: Need Advice - No Power & BAD MPG

Postby awolo » Tue Aug 07, 2012 4:41 pm

88gt4DE wrote:DId you have to drill out the broken stud ?


No, used a bolt extractor. Removed it. Replaced with new stud and made sure she was tight.

NOTE: I never removed the exhaust manifold during this process.


Why do you ask?
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Re: Need Advice - No Power & BAD MPG

Postby Mafix » Tue Aug 07, 2012 4:59 pm

my guess would be that you finally got proper boost. then you had a common issue after that.
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Re: Need Advice - No Power & BAD MPG

Postby awolo » Tue Aug 07, 2012 5:30 pm

I see. So your saying the full 3 inch exhaust allowed enough of a power increase to allow the HG to let go?

I'm assuming this is because the stock HG had 158,xxx miles, and that a new HG would not do the same thing. Or am I assuming wrong. It would be a shame to do the HG, bolt her all back up and pop it again, that's all i'm getting at really.
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Re: Need Advice - No Power & BAD MPG

Postby jaydog82 » Tue Aug 07, 2012 7:09 pm

15psi might hag been to much for it, did you reset the mbc after the exhaust? Do you have an aftermarket boost gauge? Maybe the boost increased after the exhaust.
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Re: Need Advice - No Power & BAD MPG

Postby awolo » Tue Aug 07, 2012 7:19 pm

jaydog82 wrote:15psi might hag been to much for it, did you reset the mbc after the exhaust? Do you have an aftermarket boost gauge? Maybe the boost increased after the exhaust.


After the exhaust install, the car never saw higher than 13-15psi. I made sure to watch the gauge. Unless it spiked without me noticing, but I would have hit fuel cut, and that never happened.
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Re: Need Advice - No Power & BAD MPG

Postby l00k0v3rth3r3 » Tue Aug 07, 2012 7:37 pm

are you running an RC engine/ecu because the fuel cuts are different than the regular 185
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Re: Need Advice - No Power & BAD MPG

Postby awolo » Tue Aug 07, 2012 7:47 pm

l00k0v3rth3r3 wrote:are you running an RC engine/ecu because the fuel cuts are different than the regular 185


Stock USDM ST185 AllTrac. I have only ever hit fuel cut at 17psi. I have hit it before and I would know if I did. And since the exhaust install that car has not. I made sure to turn boost down, knowing id have more flow.
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Re: Need Advice - No Power & BAD MPG

Postby 4rsnduction » Tue Aug 07, 2012 9:57 pm

awolo wrote:I KNOW this is a stupid question, but this all gets done with the car not running correct?


88gt4DE wrote:Correct :wink:



As confirmed by 88gt4DE
This is a correct statement.
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Re: Need Advice - No Power & BAD MPG

Postby awolo » Wed Aug 15, 2012 6:15 pm

Had a thought...

Would the installation of NGK BRE6's have lead to the possible head gasket pop?
Maybe I should have installed NGK BRE7's?

Thinking out loud here.
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Re: Need Advice - No Power & BAD MPG

Postby awolo » Fri Aug 17, 2012 7:01 pm

A leaking head gasket would cause a lot of smoking out the exhaust.

I have NONE.

Is it possible that the coolant is being pushed out due to a bad water pump?
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Re: Need Advice - No Power & BAD MPG

Postby jaydog82 » Fri Aug 17, 2012 7:37 pm

A bad Hg does not always smoke, if it is leaking between the cl and coolant it could be just leaking exhaust into the coolant
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Re: Need Advice - No Power & BAD MPG

Postby 4rsnduction » Fri Aug 17, 2012 8:49 pm

awolo wrote:Had a thought...

Would the installation of NGK BRE6's have lead to the possible head gasket pop?
Maybe I should have installed NGK BRE7's?

Thinking out loud here.



Aren't the plugs supposed to be NGK BKR6EP-8
Its what the BGB suggests, its what i use.
Did you ever get that smoke test and find out what was wrong ?
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