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Old 12-13-2011, 04:15 PM   #1
FosterSS
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Sketchy Dyno shop? Stock HP read low on LS3?

So I thought I would take my camaro to a local dyno shop, but I wanted to see what you guys thought about my hp/tq numbers.

The only mods I have on my car are CAI and a Diablo predator programmer, and I know both of those claim promising HP gains, However...

With that said, my car pushed out 343rwhp and 337tq. Are those pretty acurate? OR should I be concerned that this Dyno shop didnt really know what the F*** they were doing?

BTW I have the Manual trans.
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Old 12-13-2011, 04:17 PM   #2
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looks to be within range to me...
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Old 12-13-2011, 04:21 PM   #3
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Depends on the kind of dyno. And please don't tell me that you thought the LS3 put down 426rwhp.
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Old 12-13-2011, 04:21 PM   #4
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Quote:
Originally Posted by FosterSS View Post
So I thought I would take my camaro to a local dyno shop, but I wanted to see what you guys thought about my hp/tq numbers.

The only mods I have on my car are CAI and a Diablo predator programmer, and I know both of those claim promising HP gains, However...

With that said, my car pushed out 343rwhp and 337tq. Are those pretty acurate? OR should I be concerned that this Dyno shop didnt really know what the F*** they were doing?

BTW I have the Manual trans.
L99? DynoJet dyno? If yes to both, then looks to be in range. If its LS3 on dynojet, then you are 20hp off from stock engine.

EDITED: totally screwed that up. I think you are running low.
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Old 12-13-2011, 04:22 PM   #5
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A thread

There's a thread with a hundred dyno results for both LS3 and L99. Your's seems a little low. There are so many variables it's not even worth getting it done unless you're buying a tune along with it. Mine with $3K in mods read so low, I thought there must be something seriously wrong, but then my ETs dropped remarkably and I don't have trouble staying with LS3s with similar mods and beat most. I'm number 19 or so on the 1/4 mile with bolt ons list without DRs, so I think I like whatever HP I'm making....lol.
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Old 12-13-2011, 04:22 PM   #6
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It's not so far out that the shop should be necessarily called into question but it seems low to me.

Usually we see in the 345 to 350 range. But one dyno to the next is gonna be different.

Not knowing what tune is in the Diablo it's hard to speculate. And the CAI is hit or miss.

I wouldn't be alarmed.
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Old 12-13-2011, 04:37 PM   #7
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Seems a little low but I don't trust plug in programmers. Hot day, cold day, is your engine broken in (30k miles)? Still running synthetic oil?
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Old 12-13-2011, 04:39 PM   #8
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My Dad had his dynoed before with just the CAI and came in @289 rwhp on a Dynojet think it was, know it was not a mustang. Think that was BS!
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Old 12-13-2011, 04:41 PM   #9
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My Dad had his dynoed before with just the CAI and came in @289 rwhp on a Dynojet think it was, know it was not a mustang. Think that was BS!
Your dad's is an L99, different engine and trans.
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Old 12-13-2011, 04:43 PM   #10
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your #s are low even for a 100% stock LS3. I bet it'll be more with the stock tune. Like PQ said, the CAI is very negligible unless your car is professionally dyno tuned with it.
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Old 12-13-2011, 04:43 PM   #11
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Quote:
Originally Posted by siriusdish View Post
My Dad had his dynoed before with just the CAI and came in @289 rwhp on a Dynojet think it was, know it was not a mustang. Think that was BS!
Yes.

Quote:
Originally Posted by S3XPanther View Post
Your dad's is an L99, different engine and trans.
Doesn't matter with those numbers. That's WAY low.

Stock L99s typically will come in around 325 give or take a few.
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Old 12-13-2011, 04:46 PM   #12
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Quote:
Originally Posted by S3XPanther View Post
Depends on the kind of dyno. And please don't tell me that you thought the LS3 put down 426rwhp.
lol, I thought that was common sense, I knew the 426 wasnt at the wheels

Quote:
Originally Posted by Devryn17 View Post
Seems a little low but I don't trust plug in programmers. Hot day, cold day, is your engine broken in (30k miles)? Still running synthetic oil?
8300 miles and yes synthetic

Seems like I should be alright then, was just curious!
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Old 12-13-2011, 04:47 PM   #13
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You're not even broken in yet. I'd set that tuner back to a stock tune and never use it again. After you have about 10K on the car, get it dyno tuned by a professional.
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Old 12-13-2011, 05:04 PM   #14
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lol, I thought that was common sense, I knew the 426 wasnt at the wheels



8300 miles and yes synthetic

Seems like I should be alright then, was just curious!
You'd be surprised how many noobs ask a question like that. Some have no clue that there's parasitic loss in power.
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