New Numbers - GT2871 @ 19psi - Miata Turbo Forum - Boost cars, acquire cats.

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Old 01-16-2012, 01:49 PM   #1
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Default New Numbers - GT2871 @ 19psi

Finally managed to get my car back on a dyno today. Numbers came out a little better than last time, and the curve looks emensely better. I have a video I'll upload later.

'99 Miata, '95 block with eagle rods, Toyota COPS, BEGI Cast Manifold, Artech 3" turboback, GT2871 .64AR @ 19psi. Weather was typical South Florida Winter morning... 75 degrees, 35% humidity.




*the dyno AFR's show a good bit leaner than my AEM Wideband, dyno operator said that is typically the case with their "tip of the exhaust" sensor
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Old 01-16-2012, 01:55 PM   #2
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damn.... I'm not leaving the dyno till I'm over 300hp next time.

Looks good!
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Old 01-16-2012, 01:55 PM   #3
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Looks good man. So you picked up like 20 from the last one?
Curve definitely looks smoother too.
Lovin this setup.
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Old 01-16-2012, 02:04 PM   #4
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I wonder how much a better exhaust manifold would get you? Also are you using stock IM?
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Old 01-16-2012, 02:06 PM   #5
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Do you know what a stock Miata makes on their dyno?
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Old 01-16-2012, 02:08 PM   #6
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What does your spark table look like? I bet the .64AR is holding back a little bit of top end.
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Old 01-16-2012, 02:11 PM   #7
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spark table changed since last dyno? Can you post it up? looks like torque still dips ever so slightly around 5200...but great numbers!
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Old 01-16-2012, 02:18 PM   #8
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what intercooler you running? just looking for some more details on your setup. i dont think you haz a build thread?
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Old 01-16-2012, 03:23 PM   #9
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Thanks for the kind words.

Here's the video:



Quote:
Originally Posted by 18psi View Post
Looks good man. So you picked up like 20 from the last one?
Curve definitely looks smoother too.
Lovin this setup.
Thanks. I picked up 13hp, 11tq over the last dyno. Different dyno, more timing midrange, and cooler, less humid weather.

Quote:
Originally Posted by jbrown7815 View Post
I wonder how much a better exhaust manifold would get you? Also are you using stock IM?
I'm sure there's some gains there but I'm happy with the tried and true method, and I enjoy my AC. Yes the IM is stock, I've got one to port but I don't know if I'll ever actually finish it.

Quote:
Originally Posted by Savington View Post
Do you know what a stock Miata makes on their dyno?
No, I do not. I'm curious how the dyno reads myself, I'm assuming it's a bit favorable.

Quote:
Originally Posted by shuiend View Post
What does your spark table look like? I bet the .64AR is holding back a little bit of top end.
Here's the spark table:


I made another table that pulled 2 degrees timing across the map. That pull made 321hp, 290tq. They gave me a printout of HP/TQ at each RPM so I'm going to crunch some numbers in Excel but looking at the graph the first run was up 10-15hp across the rev range.

Quote:
Originally Posted by aaronc7 View Post
what intercooler you running? just looking for some more details on your setup. i dont think you haz a build thread?
It's the BEGI IC#1, it's hating life I'm sure.

No, I don't have a build thread. I didn't want you guys to figure out I screw up more than Fae.
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Old 01-16-2012, 05:04 PM   #10
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Nice!

Do you have logs of the boost?
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Old 01-16-2012, 10:34 PM   #11
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That's a decent looking spark map. Definitely not a wimpy one anyhow.

Love that you got rid of the smurf green bits too lol
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Old 01-17-2012, 09:08 PM   #12
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Quote:
Originally Posted by JasonC SBB View Post
Nice!

Do you have logs of the boost?
Ehh, hadn't really looked at it recently I guess. She bounces a good bit and peaks close to 21psi. Any idea how to smooth that out? Or am I just beyond the point of the internal gate being able to handle the job?

2504 4.2
2997 7.0
3251 9.1
3523 11.5
3754 13.6
3998 17.1
4132 18.2


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Old 01-17-2012, 09:12 PM   #13
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mbc?
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Old 01-17-2012, 09:49 PM   #14
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Wow! Nice numbers! On Intercooler #1 !
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Old 01-17-2012, 10:04 PM   #15
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Damn nice.

Oh how I would just like an even 300 at the wheels on my car.....on stock block.
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Old 02-05-2012, 06:55 PM   #16
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stock pistons?
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Old 02-05-2012, 07:08 PM   #17
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Looks awesome. I would love to see this car in person.
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Old 02-05-2012, 07:45 PM   #18
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Yes, he's running stock 95 pistons. Not sure if CR would change if he threw the 99 head on there or not?
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Old 02-05-2012, 08:04 PM   #19
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interesting.
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Old 02-05-2012, 08:39 PM   #20
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Needs less static compression, larger turbine housing, more fuel, and more spark. I bet that car is fast as ---- though.
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