Request: air intake temp AIT data - Page 4 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 06-22-2007, 03:16 AM   #61
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When do you plan to remove that grill. Depending on the "coarseness" of the pattern it could be restricting alot more airflow than you think.
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Old 06-22-2007, 10:04 AM   #62
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Ok- the important numbers there are the rise from the start of the boosted run (34c?) to the 36c at the end. That looks like a good intercooler setup to me. And I agree with Chad- that grill is probably blocking more air flow than you think.
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Old 06-22-2007, 05:25 PM   #63
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I'll try removing the grill after work today. Then I'll take another run up the hill. I put the grill in because I was getting tired of my intercooler getting banged up. Oh well.

I'm away for the next week so if I can't get it done this evening it won't happen for at least a week.

I also think I could improve the airflow if I put some ducting in to prevent air from flowing below my intercooler and out underneath my underbelly pan.
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Old 06-23-2007, 05:23 AM   #64
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Here's more logs with the Moss high-flow grill removed. Both were done in the same locations as my other logs above.

The delta is with respect to the previous "upcut" log.

Beginning:
coolant = 27C
AIT = 20C

Same coolant start point as previous log:
coolant = 45C
AIT = 23C (delta = -1C)

At highway on-ramp (drove really easy):
coolant = 95C (delta = 0C)
AIT = 20C (delta = -14C)

Base of hill (some significant boost events getting there):
coolant = 95C (delta = 0C)
AIT = 29C (delta = -5C)

After longish boost up hill (couldn't get into it as hard as last time):
coolant = 100C (delta = 0C)
AIT = 31C (delta = -5C)

I was much more aggressive driving down the hill this time and my coolant only went down to 92C but my AIT still went down to 28C.

On a related note the daily max temp for the first log was 3.5C warmer than it was today.

Even taking into account the difference in daily max temp it looks like removing the grill has definitely had a positive impact.
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Request: air intake temp AIT data-070622_1234_pull_no_grill.jpg   Request: air intake temp AIT data-070622_upcut_no_grill.jpg  
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Old 06-23-2007, 03:15 PM   #65
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well **** check this out:



Looks good dont it? Normal. ambient is low 80s today. that was just in neutral in the garage.

see I had the hydra harness still intact using the factory sensor in parallel with the GM sensor. Oops. Cut one wire and it works fine.

Matt

Last edited by y8s; 01-12-2009 at 01:37 PM.
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Old 06-24-2007, 11:24 AM   #66
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van- all those temps look normal to me

very normal- now it's time to log some boost runs.
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Old 06-29-2007, 01:35 PM   #67
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Rob, you'll be happy to know my car is healthy again.

Ambient temps were low 70's F and 70% humidity. this followed a half hour drive. minor traction issues in 1st...


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Old 06-29-2007, 02:43 PM   #68
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yes- those temps (air and coolant) are perfect. Hope to see similar air temp here...
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