Typical Stock Dyno #s ?
08-01-2007, 05:01 PM
#1
5th Gear
Thread Starter
Join Date: Jul 2007
Location: Columbus, OH
Age: 48
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Typical Stock Dyno #s ?
Just curious what those of you that have dynoed your cars stock have put down. I just picked up a 04 TL 6-spd for the wife and decided to strap it down just for giggles to see what it would make. First pull it made 225 FWHP / 205 Trq and then kinda fell off each pull a little as it got more and more heat-soaked.
How do the autos compare just out of curiosity?
How do the autos compare just out of curiosity?
08-01-2007, 07:49 PM
#3
Cruising in my
I have a silly question. Why is it that the manufacturer's HP rating are always higher than what they are Dyno'ed at?
Why does Acura say that the TL has 258 or 256 or whatever it is? when in fact its 225.
I assume this goes for all makes and models of cars. Is it because Dyno results are affected by many things like elevation temperature and are very subtle to change? What exactly do they base manufacturers HP ratings on? are these methods the same across the board like between Acura, Infinity, and Toyota for example?
Why does Acura say that the TL has 258 or 256 or whatever it is? when in fact its 225.
I assume this goes for all makes and models of cars. Is it because Dyno results are affected by many things like elevation temperature and are very subtle to change? What exactly do they base manufacturers HP ratings on? are these methods the same across the board like between Acura, Infinity, and Toyota for example?
08-01-2007, 08:02 PM
#4
AZ Community Team
Join Date: May 2007
Location: N35°03'16.75", W 080°51'0.9"
Posts: 32,488
Received 7,770 Likes
on
4,341 Posts
Originally Posted by eh? spec
I have a silly question. Why is it that the manufacturer's HP rating are always higher than what they are Dyno'ed at?
Why does Acura say that the TL has 258 or 256 or whatever it is? when in fact its 225.
I assume this goes for all makes and models of cars. Is it because Dyno results are affected by many things like elevation temperature and are very subtle to change? What exactly do they base manufacturers HP ratings on? are these methods the same across the board like between Acura, Infinity, and Toyota for example?
Why does Acura say that the TL has 258 or 256 or whatever it is? when in fact its 225.
I assume this goes for all makes and models of cars. Is it because Dyno results are affected by many things like elevation temperature and are very subtle to change? What exactly do they base manufacturers HP ratings on? are these methods the same across the board like between Acura, Infinity, and Toyota for example?
There is an SAE (Society of Automotive Engineers) standard. It was put in place a couple years ago. If not yet, then soon, all mfg publshed HP figures will have to be run to that standard. You will then (if not already inplace) have an apples-to-apples comparision across all models.
Acura uses this SAE standard. The old HP numbers were a good bit higher. For example the TL-S has SAE HP at 286. Same car, same engine under the old measurements would have been 300+ easy.
What you are seeing (and asking about) is the difference between the SAE HP measurement and the Dyno measurement. The SAE standard measures HP at the crank. The Dyno measures at the wheels. The difference between the two is primarily Drive Train loss/inefficiency. The conventional wisdom is that Acura/Honda lose 15% - 17% between the crank and the wheels.
08-01-2007, 08:45 PM
#5
Those seem like pretty good numbers compared to mine. I have an AEM intake and my first run (in 3rd gear) yielded 230hp and 202 tq. Second run (in 4th gear) showed 227 hp and 207 tq!
Trending Topics
08-02-2007, 09:59 AM
#8
5th Gear
Thread Starter
Join Date: Jul 2007
Location: Columbus, OH
Age: 48
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Yes, 3rd gear pulls should net a bit more but I believe 4th gear is the closest to 1:1 (in a 6-Spd car) if I am not mistaken so we did all pulls in 4th.
Every dyno is a bit different but generalizing Mustang dynos tend to be the most conservative followed by Dynojets and then the Dynapacks. I have many customers that have dynoed elsewhere and then here on our AWD Dynojet for comparison and made either slightly more or much less.
Its a tuning tool, no more, no less.
Every dyno is a bit different but generalizing Mustang dynos tend to be the most conservative followed by Dynojets and then the Dynapacks. I have many customers that have dynoed elsewhere and then here on our AWD Dynojet for comparison and made either slightly more or much less.
Its a tuning tool, no more, no less.
08-02-2007, 10:04 AM
#9
5th Gear
Thread Starter
Join Date: Jul 2007
Location: Columbus, OH
Age: 48
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by eh? spec
I have a silly question. Why is it that the manufacturer's HP rating are always higher than what they are Dyno'ed at?
Why does Acura say that the TL has 258 or 256 or whatever it is? when in fact its 225.
Why does Acura say that the TL has 258 or 256 or whatever it is? when in fact its 225.
Jeff
08-02-2007, 01:03 PM
#11
Originally Posted by eh? spec
I have a silly question. Why is it that the manufacturer's HP rating are always higher than what they are Dyno'ed at?
Why does Acura say that the TL has 258 or 256 or whatever it is? when in fact its 225.
I assume this goes for all makes and models of cars. Is it because Dyno results are affected by many things like elevation temperature and are very subtle to change? What exactly do they base manufacturers HP ratings on? are these methods the same across the board like between Acura, Infinity, and Toyota for example?
Why does Acura say that the TL has 258 or 256 or whatever it is? when in fact its 225.
I assume this goes for all makes and models of cars. Is it because Dyno results are affected by many things like elevation temperature and are very subtle to change? What exactly do they base manufacturers HP ratings on? are these methods the same across the board like between Acura, Infinity, and Toyota for example?
08-02-2007, 03:58 PM
#12
Cruising in my
Originally Posted by Bearcat94
There is an SAE (Society of Automotive Engineers) standard. It was put in place a couple years ago. If not yet, then soon, all mfg publshed HP figures will have to be run to that standard. You will then (if not already inplace) have an apples-to-apples comparision across all models.
Acura uses this SAE standard. The old HP numbers were a good bit higher. For example the TL-S has SAE HP at 286. Same car, same engine under the old measurements would have been 300+ easy.
What you are seeing (and asking about) is the difference between the SAE HP measurement and the Dyno measurement. The SAE standard measures HP at the crank. The Dyno measures at the wheels. The difference between the two is primarily Drive Train loss/inefficiency. The conventional wisdom is that Acura/Honda lose 15% - 17% between the crank and the wheels.
Acura uses this SAE standard. The old HP numbers were a good bit higher. For example the TL-S has SAE HP at 286. Same car, same engine under the old measurements would have been 300+ easy.
What you are seeing (and asking about) is the difference between the SAE HP measurement and the Dyno measurement. The SAE standard measures HP at the crank. The Dyno measures at the wheels. The difference between the two is primarily Drive Train loss/inefficiency. The conventional wisdom is that Acura/Honda lose 15% - 17% between the crank and the wheels.
How do they measure the HP from the crank? I'm assuming it's much more laborous than just doing a dyno.
08-02-2007, 07:00 PM
#13
AZ Community Team
Join Date: May 2007
Location: N35°03'16.75", W 080°51'0.9"
Posts: 32,488
Received 7,770 Likes
on
4,341 Posts
^^ I don't know the technology. I believe an SAE representitive has to certify the test and setup. I *assume* the crank is connected directly to the drive shaft of the dynomometer.
08-02-2007, 08:54 PM
#14
Cruising in my
Okay, well thanks for the info guys. I'm sure I could easily look up this info on wikipedia or elsewhere. I'll stop highjacking the thread. Post your Dyno results!
Thread
Thread Starter
Forum
Replies
Last Post
emailnatec
5G TLX Tires, Wheels & Suspension
29
09-28-2018 04:27 PM
DerrickW
3G TL Performance Parts & Modifications
9
11-15-2015 05:52 PM
