Guess the HP - Taking 4 cars to the dyno this week. - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 01-27-2011, 11:22 PM   #21
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Quote:
Originally Posted by gospeed81 View Post
On a DynoJet...

#1 - 200
#2 - 210
#3 - 330
#4 - 340


What do I win?
You always were optimistic.
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Old 01-28-2011, 08:27 PM   #22
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I've got the numbers. Anyone else want to take a guess?
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Old 01-28-2011, 08:30 PM   #23
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Spill the beans.
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Old 01-28-2011, 10:17 PM   #24
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OK, we took the four cars to the dyno and this is what we saw:

#1 - 187
#2 - boost pressure was too low to get a good (high) HP so I am calling it 195
#3 - 100 MPH cut-off - only got a reading of 285
#4 - 352 (My car - I was pretty ecstatic over this)

My guesses were:
200
210
310
370

I'll let you guys figure out who the "winner" was. Over here it was Frank. He owns car #4 and guessed
180
197
375
350

The guy quoted $50 each for 3 pulls with WBO2 (which is VERY reasonable in the Charleston, SC are) and ended up only charging us $120 total for the pulls since we didn't do three pulls on each car. #3 and #4 only pulled 1 time each because there was no real reason for going any further.

Also, my A/F was pretty lean. I'll post a dyno trend later but it seems like me that would probably lead to a better peak HP but I am not an expert on this.
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Old 01-28-2011, 10:24 PM   #25
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Sweet power numbers on your ls.
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Old 01-28-2011, 11:09 PM   #26
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What a beast. I think you made a great decision buying that car
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Old 01-28-2011, 11:39 PM   #27
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Yeah, I was pretty happy with my numbers. I can't see why anyone would ever want more power than that in a Miata (unless you are racing or something). This thing is a terror on the road.

The number I gave earlier (352 HP) must have been uncorrected. The shop was a little funky but I can't argue on the price. I'll have to take the MSM over there again as soon as I sort out the boost controller issue.

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Old 01-28-2011, 11:42 PM   #28
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Dear god, look at that torque. Wheel spin much? :P
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Old 01-28-2011, 11:51 PM   #29
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I'm running drag radials on the street.
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Old 01-29-2011, 12:40 AM   #30
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you make more torque at 1300 than most miatas make at their peak.

I bet your A/C doesn't make your idle dip.
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Old 01-29-2011, 12:41 AM   #31
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You should pick up some more power by adding a little fuel throughout. The LS motors we dyno at work tend to love about 12.0-12.3. You should pick up a little torque across the board too, but that is a very nice torque curve as is.
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Old 01-29-2011, 01:16 AM   #32
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richen that sucker up atleast to 13-1 that almost stoich at peak power is probably killing some ponys.
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Old 01-29-2011, 06:49 AM   #33
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My first 2 cars were nearly dead on, 3rd close and 4th off by 50

Good numbers.
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Old 01-29-2011, 06:56 AM   #34
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Quote:
Originally Posted by y8s View Post
you make more torque at 1300 than most miatas make at their peak.

I bet your A/C doesn't make your idle dip.
No A/C yet - I need to work on that sometime.

I'm not exactly sure how to compare a V8 dyno with a I4 dyno because the RPM pulses don't match up on the graphs (I'll have to look at the software a bit to figure out how to do this) but here is a MSM run with the V8 with MPH as an axis:

Oh, that blip was the boost cutoff. We dropped the boost pressure down one click and did another run. Of course, we didn't get a recording of that run. I don't think those guys in the shop knew how to use the dyno software. A few of our runs came up blank or with negative numbers.


Last edited by rmcelwee; 01-29-2011 at 07:17 AM.
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Old 01-29-2011, 11:18 AM   #35
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Quote:
Originally Posted by rmcelwee View Post
OK, we took the four cars to the dyno and this is what we saw:

#1 - 187
#2 - 195
#3 - 285
#4 - 352 (My car - I was pretty ecstatic over this)
What's important is we all pretty much called the MSMs.
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