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Old 05-24-2013, 12:49 PM   #1
Gen
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Interesting Dyno Results

91 Octane
Stock Exhaust
FBM base kit

base map vs tuned



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Old 05-24-2013, 12:51 PM   #2
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why? because of the low power achieved?
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Old 05-24-2013, 12:57 PM   #3
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More details?
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Old 05-24-2013, 01:00 PM   #4
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why? because of the low power achieved?


Curve seems strange to me--seems to run out of steam pretty quickly at 6500 and less linear than other examples I've seen.

Power was definitely lower than I expected, but stock FRS tend to dyno around 140 on this particular dyno.
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Old 05-24-2013, 01:18 PM   #5
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Looks like you have a boost leak....
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Old 05-24-2013, 01:26 PM   #6
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Looks like you have a boost leak....
I would definitely do a boost leak test on the whole system. Doesn't look right.
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Old 05-25-2013, 01:27 AM   #7
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Did you get any datalogging of your boost curve? Something is definitely going wrong at 6500 RPM. You are either losing a ton or boost, or knocking and pulling timing.
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Old 05-26-2013, 02:17 AM   #8
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Looks like you guys may have been right. The weld where the MAF sensor is installed had several leaks in it. I'll try and get back on the dyno here soon.
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Old 05-26-2013, 02:30 AM   #9
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How did you find the leaks?
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Old 05-26-2013, 02:32 AM   #10
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How did you find the leaks?
Built a boost leak tester and hooked it up to a compressor. Tester looks like this:



Immediately I could hear air leaking around the maf sensor and I was only reading about 3 psi on the gauge. After spraying soapy water I could see bubbles forming on the weld. Thankfully I don't think it's anything a little JB weld can't handle for the time being. It was the last thing I thought would leak.
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Old 05-26-2013, 10:30 AM   #11
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Quote:
Originally Posted by King Tut View Post
Did you get any datalogging of your boost curve? Something is definitely going wrong at 6500 RPM. You are either losing a ton or boost, or knocking and pulling timing.
this. Are you data logging on the dyno?
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Old 05-26-2013, 01:20 PM   #12
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Good advice, problem located, problem solved. I love this club.
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Old 05-26-2013, 11:01 PM   #13
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thats sucks, back to the rollers we go. at least you seemed to have found the leak.
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Old 05-26-2013, 11:41 PM   #14
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My car made 134.5 stock on that same dyno.
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