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Aidan's loose oily bunghole actually runs a track lap

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Old 03-21-2017, 09:20 PM
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Originally Posted by Leafy
3" is probably the minimum you want to run on that 6758. I'm going to attempt to fit 3.5 on my setup.
After the math that Ian just did I think I should be fine with a 2.5"
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Old 03-21-2017, 09:22 PM
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Professor Leafy says: "disregard math, moar is bettar"

Next up: 10" ID downpipe and 6" ID intercooler piping
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Old 03-21-2017, 09:24 PM
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Originally Posted by MiataMan00
After the math that Ian just did I think I should be fine with a 2.5"
Nope. Even 1/2 psi drop pre-turbo is detrimental, especially on the 6758. You do the math, you have the compressor map.
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Old 03-21-2017, 09:27 PM
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how detrimental? show me....right now, show me plots.
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Old 03-21-2017, 09:40 PM
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I will run with a 2.5 intake and filter. And without it. And will have dyno numbers. Just give me a few weeks to get the motor back together.

I have no dog in the fight. I will post results.
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Old 03-21-2017, 09:55 PM
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if it was a massive detriment I'm sure people would have caught on and more turbo guys would be running a 3" intake.
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Old 03-21-2017, 09:57 PM
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Never assume. And there are lots of turbo guys running 3.0 or bigger.
​​​​​​
i have 2" hotside piping. So we may not see gains. I hope to have some 2.5" piping and do more testing.
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Old 03-21-2017, 10:10 PM
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Originally Posted by MiataMan00
if it was a massive detriment I'm sure people would have caught on and more turbo guys would be running a 3" intake.
Most turbo cars outside of maitas even running the same power as most of us do are 3". 3.5 doesnt seem unreasonably uncommon in the 400+ bracket either.
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Old 03-21-2017, 10:24 PM
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I have seen actual testing. I'm too lazy to post it up. But no, you don't need 3" and no it's not a big detriment at all

kthxbi
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Old 03-21-2017, 10:27 PM
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Leafy of all people should remember this

Name: A_Maximov_2007_STI_EFR7163_E85_DynoTune2_zps640ead81.jpg Views: 144 Size: 69.3 KB





that intake tube wasn't just randomly fabbed. it was tested against bigger ones
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Old 03-21-2017, 11:09 PM
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Assume your constants and let the math do the talking... i won't hold my breath for any substantial results
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Old 03-21-2017, 11:21 PM
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That looks like a 5" filter with some sort of velocity stack under it lol.

Keep speculating guys. I'll spend the extra $5 of dyno time to figure out how my setup works best. Which is how everyone should do it.
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Old 03-22-2017, 12:12 AM
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its a friggin air filter. we are so over complicating this. lets just move on.
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Old 03-22-2017, 12:33 AM
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Originally Posted by MiataMan00
its a friggin air filter. we are so over complicating this. lets just move on.
You're not my dad!!
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Old 03-22-2017, 01:34 AM
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yes I am.....son.
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Old 03-22-2017, 10:22 AM
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Sons, I am disappoint
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Old 03-22-2017, 10:24 AM
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Bought a 3.3 r&p...Just because. I probably still plan on an 8.8. but this is a good backup plan
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Old 03-22-2017, 10:40 AM
  #8898  
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Smart decision. Those will never go down in value unless MF starts making a whole ton of them in the future, which I highly doubt.
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Old 03-22-2017, 11:24 AM
  #8899  
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Go down?

if I was a D!ck, I could probably buy these out and they will be worth their weight in gold by week's end.
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Old 03-22-2017, 11:27 AM
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Originally Posted by Ted75zcar
Go down?

if I was a D!ck, I could probably buy these out and they will be worth their weight in gold by week's end.

Dude, I woke up and read the posts and bought one in a panic.
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