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Heartbreaking Dyno Results

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Old Mar 24, 2026 | 03:04 PM
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Default Heartbreaking Dyno Results

The Mustand dyno didn't disappoint in continuing to read low.
Here is my 992 Turbo S w\Tune, 100 CEL Sport Cats, exhaust and filter, dyno in awd mode, 36F.

Best run 630whp and 624wtq.


Last edited by CM991; Mar 24, 2026 at 03:57 PM.
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Old Mar 24, 2026 | 03:05 PM
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Exhaust is JCR non-valved with Europipe Sport cats.



Last edited by CM991; Mar 24, 2026 at 03:54 PM.
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Old Mar 24, 2026 | 03:06 PM
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Dyno sheet


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Old Mar 24, 2026 | 03:25 PM
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Mustang usually reads 10% lower.

Were you tuning it or doing runs?

What was boost, timing and IAT?

I usually try bringing an extra fan and blow across the intercooler or she will heat soak quickly and pull timing. I don't think you're far off considering a 10% loss, have you done any tune revisions or is this a OTS tune?

Edit, for reference, I only made 840whp on a mustang with PTME turbos, meth and MS109
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Old Mar 24, 2026 | 03:52 PM
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Originally Posted by Angryinch
Mustang usually reads 10% lower.

Were you tuning it or doing runs?

What was boost, timing and IAT?

I usually try bringing an extra fan and blow across the intercooler or she will heat soak quickly and pull timing. I don't think you're far off considering a 10% loss, have you done any tune revisions or is this a OTS tune?

Edit, for reference, I only made 840whp on a mustang with PTME turbos, meth and MS109
This was more of a curious run. I estimated 685whp - 710whp Dynojet based on 8-12% variance.

Last run was with 3 fans in the back and 5 in the front.

The power band seems to flattened around 4200-5500rpm as if its pulling timing. I have to do some data logging and see what's happening. This is a OTS Softronic tune.

The pull looks to have been done in Auto mode and you can hear the car upshifting, instead of running it on manual mode and hitting limiter.

Car is running 5.8 60-130mph so it pulls fairly well.







Last edited by CM991; Mar 24, 2026 at 03:55 PM.
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Old Mar 24, 2026 | 04:00 PM
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Auto mode would cause issues with the reading likely as it shifted out of 1:1 gear.

5.8 60-130 is perfect and running very strong, that is where I was with similar mods, 93 oct pump, which is about 140mph trap speed. If I leaned on the tune any further, timing correction got more aggressive, so we left it alone.

Beauty color BTW and I love the square exhaust ports.
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Old Mar 24, 2026 | 05:40 PM
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Originally Posted by CM991
This was more of a curious run. I estimated 685whp - 710whp Dynojet based on 8-12% variance.

Last run was with 3 fans in the back and 5 in the front.

The power band seems to flattened around 4200-5500rpm as if its pulling timing. I have to do some data logging and see what's happening. This is a OTS Softronic tune.

The pull looks to have been done in Auto mode and you can hear the car upshifting, instead of running it on manual mode and hitting limiter.

Car is running 5.8 60-130mph so it pulls fairly well.

Very strong ! Any Draggy runs in the 1/4 ?
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Old Mar 24, 2026 | 06:33 PM
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Originally Posted by CM991
Last run was with 3 fans in the back and 5 in the front.

The way the rear fans are positioned actually harms cooling flow…
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Old Mar 24, 2026 | 10:47 PM
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I know why the car was down on power. You won’t like it.











You don’t have the right exhaust tips.
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Old Mar 25, 2026 | 07:08 AM
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Originally Posted by 3-Pedals
I know why the car was down on power. You won’t like it.











You don’t have the right exhaust tips.
Ha!

I have the Turbo tips, not the Carrera ones
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Old Mar 25, 2026 | 07:44 AM
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Originally Posted by Angryinch
Auto mode would cause issues with the reading likely as it shifted out of 1:1 gear.

5.8 60-130 is perfect and running very strong, that is where I was with similar mods, 93 oct pump, which is about 140mph trap speed. If I leaned on the tune any further, timing correction got more aggressive, so we left it alone.

Beauty color BTW and I love the square exhaust ports.
Yes. The vehicle shifted early and did not reach full redline.

The square exhaust I believe look proper on a Turbo. I ordered it without PSE from factory and added the PSE after for $500

Originally Posted by onfireTTS
Very strong ! Any Draggy runs in the 1/4 ?
Yes. Posting below.

Originally Posted by CanAutM3
The way the rear fans are positioned actually harms cooling flow…
Thats what Emre suggested and others did as well. It was also 36-F so not a hot day at all.

Vehicle was not on Dyno mode so that could have affected things as well.
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Old Mar 25, 2026 | 07:46 AM
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Best draggy. This was 36F, rainy and with winter tires.

I also let go at the end since I was approaching 140mph.




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Old Mar 25, 2026 | 10:05 AM
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Originally Posted by CanAutM3
The way the rear fans are positioned actually harms cooling flow…
The way fans are positioned blow air to the opposite direction.
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Old Mar 25, 2026 | 11:03 AM
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Originally Posted by mat911
The way fans are positioned blow air to the opposite direction.
There is no direction of air since the vehicle is stationary.
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Old Mar 25, 2026 | 12:45 PM
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Why do you say Emre but Softtronic tune? Isn’t that two different co?


I do not think the fans matter much with a stationary car, I blow air up the bottom all the time, it’s an air to air intercooler, with air flow over the core, it would help with cooling.
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