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 Dynoed And 1/4th Mile On My Sonata, before and after..... |
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 Oct 4 2008, 01:08 PM
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Sonata Perfromance Expert
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Location: somewhere in the abyss
Drives: Fastest 3.3L Sonata!
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I thought this was cool. When I got my car back all I had was my old exhaust and everything else was stock. We ran this dynolishious test (similar to the gforce but its an app on the iphone) I am fairly certain that the 1/4 is about 1 second off. Being at the track I run between 15.5 and 15.8. But what amazed me was the HP raiting. In the same forum my car actually dynoed 186hp on a dyno. It rated it at 187HP. See pix below. (IMG: http://i244.photobucket.com/albums/gg1/v33sonata/1.jpg) Now we did a run last night similar weather but this time I had my CAI and redesigned exhaust. This had defiantly made my car quite faster. According to this I knocked a full second off my 1/4th mile and gained 46hp!!! I thought this was wrong but then remembered my friend who has a mustang and added a 50shot and ran 1 full second faster as well. We also noticed we had entered out power terrain lose in at 25% but when checking my dyno sheet I realized it shoudl have been only 20% maybe thats why it has me running high times. or could be just cause its the street. Being I run a 15.5- 15.8 at the track with my old exhaust I am assuming these are a whole second off. that means I would definatly be in the mid to high 14's!! :) (IMG: http://i244.photobucket.com/albums/gg1/v33sonata/jpg.jpg)
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Oct 4 2008, 01:54 PM
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Senior
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Location: New Jersey, USA
Drives: 07 GLS Sonata, 2.4, 5 spd manual, Eibach Pro-Kit, Short Ram Intake
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First of all, I’m glad to hear your modifications increased performance. To be candid, I don’t think I’d trust this dynolicious test. A CAI and exhaust adds 46 hp? You know motors. Doesn’t that seem unrealistic to you?
There also seems to be some inconsistencies with this test. As a start, a properly running 3.3 should be never be as slow as a 16.8 second quarter at 86.5 mph. That’s consistent with a high 8-second 0-60 time. Your car should be in the mid to high 6 second range to 60 mph. Even your 15.84 sec quarter time is more consistent with a mid to low 7-second run to 60 mph. And why did your faster run generate .65 G and your slower run produce .75G? Something’s not right with the numbers. Both runs seem off and I would never use one or the other to estimate the added hp of your mods.
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Oct 4 2008, 04:13 PM
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Senior
Group: Members
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Location: New Jersey, USA
Drives: 07 GLS Sonata, 2.4, 5 spd manual, Eibach Pro-Kit, Short Ram Intake
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Real numbers are a reflection of your car’s actual acceleration and can be used as a comparison against other cars. Even if this test is inaccurate, your argument is that your car is still one second quicker in the quarter than it was. I hope you are right!
Since a stock V6 Sonata is about 15.3 seconds in the quarter that means your Sonata should now be in the 14.3-second range. That requires a pretty big increase in power. I’ve never heard of a CAI and exhaust shaving any more than .5 seconds off a quarter mile time in a 15 second car. (By exhaust, I mean no exhaust headers or removal of catalytic converters. Just pipes and mufflers.)
Such a huge increase in acceleration makes me question if your test provided reliable before and after numbers. If the first test was off (too slow), but your second test was close to real, it might make it look like your car got faster than it really did. If yours is really one full second quicker, I am genuinely happy for you. Hopefully you can take your car to a track for a real test so you know exactly where the car stands. If your car’s in the 14.3 second range with a 97-98 mph trap speed, more power to you! I hope it is.
This post has been edited by Blue07: Oct 4 2008, 04:14 PM
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Oct 4 2008, 04:13 PM
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Audio geek
Group: Super Mod
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Location: Edmonton, Alberta, Canada
Drives: 2006 Sonata GL V6
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QUOTE(Blue07 @ Oct 4 2008, 11:54 AM) First of all, I’m glad to hear your modifications increased performance. To be candid, I don’t think I’d trust this dynolicious test. A CAI and exhaust adds 46 hp? You know motors. Doesn’t that seem unrealistic to you?
There also seems to be some inconsistencies with this test. As a start, a properly running 3.3 should be never be as slow as a 16.8 second quarter at 86.5 mph. That’s consistent with a high 8-second 0-60 time. Your car should be in the mid to high 6 second range to 60 mph. Even your 15.84 sec quarter time is more consistent with a mid to low 7-second run to 60 mph. And why did your faster run generate .65 G and your slower run produce .75G? Something’s not right with the numbers. Both runs seem off and I would never use one or the other to estimate the added hp of your mods.
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Yes, 46 horse is completely unrealistic :) QUOTE(v33sonata @ Oct 4 2008, 12:26 PM) unrealistic? no not at all. the K&n on a gt500 add almost 60 hp and 18hp on a VW GTI. it all depends on the car. I am not so intrested in the actual 1/4 mile time. It could be high from the road I was on or even the power terrain lose being incorrect who knows. But even being wrong a second is a second weather its on the track or on a phone. If it cut a second off on the phone I will more then likely cut a second off at the track. as for the HP who knows may be right may not. I need to dyno it to find out. oh and as for the g's We hit a small hump and i think that made me pull a little higher g.
[right][snapback]194444[/snapback][/right]
Actual dyno tests on a cold air intake and exhaust made 7 peak horse difference and about 11-13 hp max gains. 46 horse is a figment of your g-force wannabe dyno testing thing's imagination. There are several similar devices out there, and the good ones actually use a couple accellerometers to test g forces and they are still inaccurate, especially if any of the test parameters change, like level vs. hills, day/hot vs. night/cool. Your iphone doesn't likely have an accellerometer, and probably relies on the GPS signals which can be as inaccurate as 300 feet in any direction. Go dyno it if you want real numbers, since the smoke and mirrors that this dynolicious thing is giving you REALLY isn't going to prove anything.
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Oct 4 2008, 04:29 PM
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Character Assassin
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Location: New Mexico
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"Your iphone doesn't likely have an accellerometer, and probably relies on the GPS signals which can be as inaccurate as 300 feet in any direction." I was thinking google was your best friend... you'r wrong :) http://www.apple.com/iphone/specs.html and Like I said before the Iphone APP was tested against a real dyno and the diff was betwnn 7+/- hp. Google is your best friend! BUT anyways v33 should dyno on a real dyno... lazy.
This post has been edited by thanox2: Oct 4 2008, 04:30 PM
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Oct 4 2008, 05:48 PM
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Sonata Perfromance Expert
Group: Members
Posts: 1,031
Joined: 13-February 08
Member No.: 41,121
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Location: somewhere in the abyss
Drives: Fastest 3.3L Sonata!
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QUOTE(Blue07 @ Oct 4 2008, 04:13 PM) Real numbers are a reflection of your car’s actual acceleration and can be used as a comparison against other cars. Even if this test is inaccurate, your argument is that your car is still one second quicker in the quarter than it was. I hope you are right!
Since a stock V6 Sonata is about 15.3 seconds in the quarter that means your Sonata should now be in the 14.3-second range. That requires a pretty big increase in power. I’ve never heard of a CAI and exhaust shaving any more than .5 seconds off a quarter mile time in a 15 second car. (By exhaust, I mean no exhaust headers or removal of catalytic converters. Just pipes and mufflers.)
Such a huge increase in acceleration makes me question if your test provided reliable before and after numbers. If the first test was off (too slow), but your second test was close to real, it might make it look like your car got faster than it really did. If yours is really one full second quicker, I am genuinely happy for you. Hopefully you can take your car to a track for a real test so you know exactly where the car stands. If your car’s in the 14.3 second range with a 97-98 mph trap speed, more power to you! I hope it is.
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Once again, I am simply referencing to the 1 second difference. My car does not do a 15.3 it was 15.5 so I dont think a 14.3 is going to be seen by my car. Dog, I am not saying the 46hp is accurate but it very may will be. K&N is the ONLY company that dynos every car with thier CAi and most dyno pretty well even the v6 tibby on the low end is 15HP if i remember correcly. You dyno test was with your old intake system with a more bends. I have noticed HUGE gains with my new exhaust and intake. I will have it dynoed and tracked sometime here soon.
This post has been edited by v33sonata: Oct 4 2008, 06:55 PM
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