good example why you cant race dyno numbers!
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From: houston
good example why you cant race dyno numbers! well i have always dynoed my car at mti because they are nice guys,very professional and have always treated me well but being i had a mustang they couldnt tune my car so i took it over to houston performance and had it dyno tuned.here are the numbers
mti=408rwhp,392rwtq
hp=381rwhp,367rwtq
this is a good reason to try not to compare numbers unless they are on the same dyno.
btw,next time i am going to buy the software to tune th car myself and do it back up at mti.being that i have dealt with both places i have to say i will always try and use mti's services.houston performance was a joke compared to mti.
mti=408rwhp,392rwtq
hp=381rwhp,367rwtq
this is a good reason to try not to compare numbers unless they are on the same dyno.
btw,next time i am going to buy the software to tune th car myself and do it back up at mti.being that i have dealt with both places i have to say i will always try and use mti's services.houston performance was a joke compared to mti.
Re: good example why you cant race dyno numbers! 
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From: Los Angeles
Re: good example why you cant race dyno numbers! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by chikn:
<strong>I think its probably more of an operator technique when using it along with variations in the dyno itself. I find it almost unbelievable to see some completely stock LS1's pull 335 hp from a dyno another car exactly the same stock pull a 305 on a different dyno. I just dont believe there can be that much difference in the 2 cars of the same year completely unmodded. I mean 30 horsepower??
I think the only thing a dyno is good for is testing before and after modifications to determine gains. But again only if its the same dyno and same operator. Otherwise you could be comparing apples to oranges.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">With the dyno's around here, I dont see how an operator could affect anything. All the sensors are automatic, no information is entered into the computer. They strap the car down, he nails the gas, prints me a sheet with SAE correction (I get to play with smoothing if I want) and thats it. 30rwhp difference is due to either a place having bad weather info entered (if its not automatically entered) or a dyno is not calibrated correctly.
<strong>I think its probably more of an operator technique when using it along with variations in the dyno itself. I find it almost unbelievable to see some completely stock LS1's pull 335 hp from a dyno another car exactly the same stock pull a 305 on a different dyno. I just dont believe there can be that much difference in the 2 cars of the same year completely unmodded. I mean 30 horsepower??
I think the only thing a dyno is good for is testing before and after modifications to determine gains. But again only if its the same dyno and same operator. Otherwise you could be comparing apples to oranges.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">With the dyno's around here, I dont see how an operator could affect anything. All the sensors are automatic, no information is entered into the computer. They strap the car down, he nails the gas, prints me a sheet with SAE correction (I get to play with smoothing if I want) and thats it. 30rwhp difference is due to either a place having bad weather info entered (if its not automatically entered) or a dyno is not calibrated correctly.
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From: houston
Re: good example why you cant race dyno numbers! i justr use the dyno as a tuner but this kind of shows how some of these cam and head cars are making 440rwhp and someone elses similar setup only makes 390rwhp.
the track is were it matters.
the track is were it matters.
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Re: good example why you cant race dyno numbers! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by roger:
<strong>i justr use the dyno as a tuner but this kind of shows how some of these cam and head cars are making 440rwhp and someone elses similar setup only makes 390rwhp.
the track is were it matters.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I've hit 440 rwhp (give or take 2rwhp) at 3 different dynos so far. I always go to multiple dynos for consistency.
<strong>i justr use the dyno as a tuner but this kind of shows how some of these cam and head cars are making 440rwhp and someone elses similar setup only makes 390rwhp.
the track is were it matters.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I've hit 440 rwhp (give or take 2rwhp) at 3 different dynos so far. I always go to multiple dynos for consistency.
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Re: good example why you cant race dyno numbers! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by roger:
<strong>i justr use the dyno as a tuner but this kind of shows how some of these cam and head cars are making 440rwhp and someone elses similar setup only makes 390rwhp.
the track is were it matters.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">LOL and run the SAME ET/mph at the track with same weight/gear.
Chris
<strong>i justr use the dyno as a tuner but this kind of shows how some of these cam and head cars are making 440rwhp and someone elses similar setup only makes 390rwhp.
the track is were it matters.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">LOL and run the SAME ET/mph at the track with same weight/gear.
Chris
Re: good example why you cant race dyno numbers! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Chris ARE 360:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by roger:
<strong>i justr use the dyno as a tuner but this kind of shows how some of these cam and head cars are making 440rwhp and someone elses similar setup only makes 390rwhp.
the track is were it matters.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">LOL and run the SAME ET/mph at the track with same weight/gear.
Chris</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">good point!
Yeah this shows that the 440rwhp numbers or even the 450rwhp numbers on heads cam cars, are bunck at some level.
Maybe have one car take it to 3 different dynos and then average the numbers, that will be fair.
Unless people start buying autodyns from Superflow there is no way in hell that these numbers will ever mean anything unless they are just heads and shoulders above everything else.
Like a 346 that gets 475rwhp @ 6700 that would be "king of the hill" compared to other combos
Bret
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by roger:
<strong>i justr use the dyno as a tuner but this kind of shows how some of these cam and head cars are making 440rwhp and someone elses similar setup only makes 390rwhp.
the track is were it matters.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">LOL and run the SAME ET/mph at the track with same weight/gear.
Chris</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">good point!
Yeah this shows that the 440rwhp numbers or even the 450rwhp numbers on heads cam cars, are bunck at some level.
Maybe have one car take it to 3 different dynos and then average the numbers, that will be fair.
Unless people start buying autodyns from Superflow there is no way in hell that these numbers will ever mean anything unless they are just heads and shoulders above everything else.
Like a 346 that gets 475rwhp @ 6700 that would be "king of the hill" compared to other combos
Bret
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Re: good example why you cant race dyno numbers! Was HP's dyno a dynojet?
If so that is VERY interesting <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I have seen similar things in the past with dynojets <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
RWHP/gearing/raceweight/tranny type, converter/weather information/altitude are far better indicators of a packages performance.
Chris
<small>[ November 04, 2002, 12:54 PM: Message edited by: Chris ARE 360 ]</small>
If so that is VERY interesting <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I have seen similar things in the past with dynojets <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
RWHP/gearing/raceweight/tranny type, converter/weather information/altitude are far better indicators of a packages performance.
Chris
<small>[ November 04, 2002, 12:54 PM: Message edited by: Chris ARE 360 ]</small>
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