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Old 03-25-2015, 12:18 AM   #1
damian559
 
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Factory Freak?

I get asked this at least once a week on this forum, so I'd like to make a thread about it to see what you guys think. Everybody thinks I made up my numbers or have more done than I say. My 2015 1LE made 442 rwhp and 431 rwtq on a conservative Mustang Dyno. My only mods are Stainless Power 1 7/8 " long tube headers, cat-less mid pipes, CAI intake, and a dyno tune. When I took my car to get my parts installed and tuned, I asked my tuner what he though it'd make and he said probably around 405-415rwhp, because his dyno is known for giving low numbers. When I go pick it up the next day he says you won't believe how much it made, and when he told me I didn't believe him at first. He said he pulled my car off the dyno and put on his truck and another car that he knows the numbers on and they put out the exact same. He had no explanation except that I got an exceptional engine.

This past Saturday the same shop hosted a Dyno Day, and wasn't planning on dynoing my car because it was just tuned back in December and knew what it made. After a few cars had gone up, and were disappointed by their numbers I decided to re-dyno my car to see if it was just fluke back when it was tuned. Sure enough it surprised me again, for being 40 (88 degrees) degrees warmer outside than what it was back in December. I put down 437 rwhp and 428 rwtq. Everyone was saying I have a mild cam or polished heads, and coming up with every excuse they could to justify the numbers. Just to compare numbers with other cars here are a few examples of what they put down:
2015 Stingray 7-speed (stock) - 403 rwhp
2014 5.0 Mustang 6-speed manual(longtube headers, borla catback, cobra-jet intake, cai, tune) - 418rwhp
2013 Mustang 5.0 automatic (long tube headers, cai, dyno tune) -378rwhp
2006 6.0 GTO 6-speed (full bolt ons, cam, heads and tune) - 425 rwhp
2012 Camaro SS automatic (long tubes, cai, hand held tune) - 376 rwhp
2006 LS2 Corvette automatic (full bolt ons, cam, dyno tune) -391rwhp
2012 ZL1 automatic (long tubes, cai and tune) -460 rwhp
2012 Corvette GS automatic (2.9L Whipple, catback, cai, and tune) 520rwhp


I was just curious if anybody else has received high numbers in their bolt on cars, especially their 1LEs. Lastly, I'll be going in next week for a cam swap (low 230 lift), what numbers should I expect?
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Last edited by damian559; 03-25-2015 at 12:50 AM.
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Old 03-25-2015, 12:27 AM   #2
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Sounds like you have an exceptional engine my friend. I'm getting mine dynoed next week. Hope I have the same exceptional engine
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Old 03-25-2015, 12:31 AM   #3
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I have a 2012 SS LS3. I have long tube headers, Ported TB, and a CAI. Before the tune my car put down 430HP on a DynoJet. The tune only added 7HP. The people tuning the car said every once in awhile they see a car with basic bolt-ons that put down good numbers.
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Old 03-25-2015, 12:34 AM   #4
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Damn those are some pretty good numbers!
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Old 03-25-2015, 01:52 AM   #5
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1LE owners know the 1LE is a special separate model of Camaro, this just proves it.

Naw, just kidding on that.

I'd say you got an extraordinary car! Someone should tear down the motor to find out what's different!
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Old 03-25-2015, 01:57 AM   #6
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Factory Freak?

I'm getting 437/424 with shorty headers, mid pipes, CAI and a tune.

http://www.camaro5.com/forums/showpo...4&postcount=83


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Old 03-25-2015, 04:02 AM   #7
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Sounds right. I have what you have along with a Cam and i was dynoed at 482.9 rwhp.

Also completely stock i was dynoed against other camaros (non 1LE) and i pulled 379 rwhp.
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Old 03-25-2015, 04:06 AM   #8
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one of our Mods Tag had a factory freak of a motor if I recall
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Old 03-25-2015, 04:23 AM   #9
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It's the Mustang dyno. Go check it on a dyno jet somewhere.
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Old 03-25-2015, 04:26 AM   #10
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When the LS3 first came out, there was a post on the Corvette Forum with someone only putting on longtube headers and a X-pipe with a dyno tune and it gained roughly 30-40hp, I don't remember what the stock dyno was on the car though. Given that you have a CAI also and that GM always underrates their engines, Id say that's probably about right. The new LT1 is really underrated also. Have to love how GM underrates their cars.
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Old 03-25-2015, 04:55 AM   #11
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Some Dyno's are most generous than others with the numbers but I'd gather you boys broke your Camaro's in proper.
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Old 03-25-2015, 05:30 AM   #12
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So how DID you do your break in damian559? Hard break in or nice and easy like the manual says? I bet he broke it in hard.
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Old 03-25-2015, 05:38 AM   #13
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I think a mustang dyno shows lower than a dynojet.
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Old 03-25-2015, 06:20 AM   #14
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I've also heard Mustang Dyno's read more optimistic than Dynojet.

Stock LS3 with open NPP + Air Raid Intake = I pulled 388 hp on a Dynojet which seemed reasonable at the time.
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Old 03-25-2015, 06:20 AM   #15
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Damian, you just may have gotten lucky and got a car/engine that was built when the "stars aligned" just right, it happens. I have a friend in our car club that his '10 SS when TOTALLY stock would take his drag race class EVERY TIME very easily, and was inspected AFTER races.....thinking it wasn't stock.......so YES, its happens,

no go out and buy yourself a lotto ticket while your at it.....ya just never know when lightning will strike!
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Old 03-25-2015, 06:23 AM   #16
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2011 SS LS3, DT long tubes, cat delete, CAI, Brian Tooley Cam package = 448rwhp on a DynoJet
You have a freak!
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Old 03-25-2015, 06:27 AM   #17
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What sort of time slips do you guys have to support these dyno numbers?
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Old 03-25-2015, 06:31 AM   #18
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Those are sweet numbers. My 2010 SS M6 with shortys, HF cats, and CAI w/scoop made 405 on New Era's Dynojet. After a conservative tune it made 417/419. Mike asked how I broke it in and I told him I beat on it pretty good. He said those are the ones that seem to make the most power. He just had a guy in with the same setup but with longtubes and only made 390 pre-tune. He drove his car like a little old lady going to church on Sunday. There's probably something to be said about an aggressive break-in.
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Old 03-25-2015, 06:43 AM   #19
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I'm with you on the factory freak. I have a 10 SS auto, and I put down 410-413 hp. on 2 different dynos. I just have long tubes, cat back and cold air intake. And not to mention all of those parts are considered "cheap" parts. I'm way above what an auto should be making.
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Old 03-25-2015, 06:57 AM   #20
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my 1LE dyno'd 20ish RWHP over my '12 SS on the same dyno with the same mods. You might have the wrong cam in your car from the factory......LS7 or LS9
I'm kidding obviously^

I think the factory freakishness will wear off once you put a custom ground cam in there. The custom camshaft will change all of the factory valve events and then it's gonna make what it's gonna make based off the new camshaft design.

Keep going to those dyno days and pissing people off
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Old 03-25-2015, 07:50 AM   #21
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Quote:
2012 Camaro SS automatic (long tubes, cai, hand held tune) - 376 rwhp
There you go. Why would the same engine with the same mods (albeit a different tune) put down 61rwhp less?

Yes a dyno tune makes more power, but not 61rwhp difference especially on a basic bolt-on car where the tuning parameters are not that different.
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Old 03-25-2015, 07:57 AM   #22
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Quote:
Originally Posted by EFI View Post
There you go. Why would the same engine with the same mods (albeit a different tune) put down 61rwhp less?
It's not the same engine. L99 vs LS3 will put down decidedly different numbers. Also, mustang dyno's traditionally rate lower than dyno jets. I figured that was a well known fact. I think it has to do with the fact that a mustang dyno is a load bearing system and the dyno jet is inertia based.
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Old 03-25-2015, 08:08 AM   #23
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Did you follow factory break in period recommendations?
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Old 03-25-2015, 08:11 AM   #24
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Dyno numbers are stupid. Run it at the track and see what it traps. That will tell the story.
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Old 03-25-2015, 08:17 AM   #25
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Take it to the track and see what times you make.
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