just got back from the dyno...... - Miata Turbo Forum - Boost cars, acquire cats.

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Old 12-12-2006, 07:54 PM   #1
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Default just got back from the dyno......




there's the numbers...... 12psi..... discuss
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Old 12-12-2006, 08:05 PM   #2
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ahh here sweet only 260 whp. :loco: looks good you got Af's? What turbo agian.
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Old 12-12-2006, 08:06 PM   #3
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i told you dude!
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Old 12-12-2006, 08:38 PM   #4
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That's nice!

Whats the difference between the green and yellow numbers? Are they corrected, or different boost numbers? (8 / 12 wild guess)

Curious, thanks. Never been to the dyno.
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Old 12-12-2006, 08:38 PM   #5
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no afr's to post..... tail sniffed on the dyno, and the tuner says I'm conservative.... He told me the numbers, but they escape me since I don't have the printout for them.....

also.... there's more in it.... the fuel system isn't maxed out, and he said that he thinks he could do 300 at 16psi....

I'm not pushing it though.....

as for the turbo, you might not believe it.... but it's an ebay special 57 trim T3/T4....
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Old 12-12-2006, 08:40 PM   #6
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green and yellow numbers are different runs..... b4 and after if you will
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Old 12-12-2006, 08:42 PM   #7
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Tease
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Old 12-12-2006, 08:46 PM   #8
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lol
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Old 12-12-2006, 09:28 PM   #9
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no seriously..... the numbers are real.....
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Old 12-13-2006, 03:43 AM   #10
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wow nice numbers!
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Old 12-13-2006, 11:13 AM   #11
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wow, those are GREAT numbers for only 12psi. I really like the flat torque curve you have on that bad boy. I am very impressed with these ebay turbos now. A real Garrett 57 trim would most likely be almost identical. At 16psi you would make a lot more torque and 300whp is very doable on 16psi for you. I generally was gaining 10whp per pound of boost so if the same holds true for you then you would be right at 300+whp. My setup made a lot more midrange torque than yours did but I went so rich on the topend that I had some torque falloff up top.
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Old 12-13-2006, 12:46 PM   #12
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Yeah- my t3/t4 didn't "come alive" until 12psi.

Are you running a stand-alone ecu? Torque looks low relative to the hp- ign advance can help that- and spool.
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Old 12-13-2006, 04:54 PM   #13
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details? engine, ECU? what kind of dyno was that? i bet that thing is fun.
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Old 12-13-2006, 05:41 PM   #14
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1.8, Log manifold, Hydra Ecu, external wastegate, 550cc injectors from what i've gathered from talking with Airbrush.
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Old 12-13-2006, 06:04 PM   #15
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Quote:
Originally Posted by m2cupcar View Post
Yeah- my t3/t4 didn't "come alive" until 12psi.

Are you running a stand-alone ecu? Torque looks low relative to the hp- ign advance can help that- and spool.

torque does seem a bit low, on 12psi I was making 240ft/lb and 263whp. The reason why he is still making power at redline is because of how flat that torque curve is...I like my midrange torque but I wish I could hold my 270ft/lb all the way to 7000rpm. Im hoping the BEGI intake manifold will fix that to some degree.
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Old 12-13-2006, 06:11 PM   #16
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It's bizarre how the torque curve just plateaus and then hangs there for over 2k rpm.
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Old 12-13-2006, 06:16 PM   #17
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Odd how the tq peak isn't all that high, but awesome that it holds its peak all the way to 7k. It's probably very fun to drive.
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Old 12-13-2006, 06:17 PM   #18
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Quote:
Originally Posted by m2cupcar View Post
It's bizarre how the torque curve just plateaus and then hangs there for over 2k rpm.

yeah it sure is odd. I mean my car made 240ft/lb @ 5100rpm and then it just slowly tapers to about 205ft/lb by redline (12psi). On my 16psi pulls I peak @ 270ft/lb @ 5100 and then drop down to about 220ft/lb by redline. If I could hold like 250ft/lb to redline I would be making well over 300whp. I have a feeling that when airbrush goes for more boost that he will have a large amount of midrange torque followed by a slow taper to redline. Some of his torque holding power could be from the 99 head...but look at mark's dyno...he starts dropping torque like I do and hes got a 99 head too...so Im kinda perplexed.
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Old 12-13-2006, 06:20 PM   #19
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The missing link is his tuning - how much has he done? What's it look like? That might explain something... but not everything. His torque curve looks like that of a supercharger, only 2k later.
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Old 12-13-2006, 09:36 PM   #20
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that's 2 hours on the dyno.....

The tuner is really a subaru specialist.... so that could explain a bit about the tune as far as the flat tourque curve up top.

The car does pull much like my brothers supercharged RSX.... only with more power, and more lag... And nothing at all like previous turbo cars that I've driven....

braineak had the details right also... car is a 2000 with a stock motor, and the pulls were done on a Dynapack...
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