Dynojet experiences/opinions.
Thread Starter
SSU Moderator
Joined: Nov 2001
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From: Austin, TX
Re: Dynojet experiences/opinions. I agree, Harlan. I know that, especially in FI apps, the load can be different enough to screw A/F numbers between the track and the dyno. However, no one likes the Mustang because it reads lower. like i said, its a tuning tool, not the best, by since it is noteable, its the one. Now, as far as pricing, is 50 for 3 and 75-100/hr too much? there are two dynos within say 45min of where i want to be, too close?
Ryan
Ryan
Re: Dynojet experiences/opinions. Best results I've seen tuning at a dyno, was then a friend of mine dyno'd his 78 T/A w/6.6 liter M4. The car baselined at 156 rwhp. After tuning just tweaking the timing and carb, it made 218rwhp. The car gained right at 60rwhp for $110 or about 1 hour of time and 12 pulls with a wide band O2 going.
Pretty hard to get 60rwhp for $110 even with NO2....so in this case it was probably the best money he could have spent.
Pretty hard to get 60rwhp for $110 even with NO2....so in this case it was probably the best money he could have spent.
Re: Dynojet experiences/opinions. One other dyno story comes to mind. A local teen still in high school had a nice riced out Prelude that a local import tuner and worked over. The kid had blown up the last engine in the car so the tuner had built a "Turbo motor" the short block, heads, cams, turbo and computer controller. I asked, "Well what will this car dyno?"
The tuner who was with the teen, proudly annouced, "It will make well over 400 front wheel horsepower, you've got to respect that. I think with a little tweaking we may see 430 fwhp or a little more."
I was impressed, until after the first dyno pull...the car made 155 fwhp...the tuner was stunned. After 3 hours of tuning, smoking and shuttering, most of which was spent by the tuner on his cell-phone trying to find out how to adjust the timing and waste gate from his partner, the Prelude dyno at best 208fwhp. At one point I left the dyno area because I was afraid the engine was about to blow, the dyno operator aborted the run and probably saved the kid another rebuild. The kid too the car for a drive and cam back fussing about how much turbo lag the car had.
The tuner just stood there and suggest a few thousand dollars more of fuel and electronic boost controllers the car needed to make the 400 fwhp it was clearly capable of...
The import guys left before they could see my T/A put down 323 rwhp & 335 rwtq...
The tuner who was with the teen, proudly annouced, "It will make well over 400 front wheel horsepower, you've got to respect that. I think with a little tweaking we may see 430 fwhp or a little more."
I was impressed, until after the first dyno pull...the car made 155 fwhp...the tuner was stunned. After 3 hours of tuning, smoking and shuttering, most of which was spent by the tuner on his cell-phone trying to find out how to adjust the timing and waste gate from his partner, the Prelude dyno at best 208fwhp. At one point I left the dyno area because I was afraid the engine was about to blow, the dyno operator aborted the run and probably saved the kid another rebuild. The kid too the car for a drive and cam back fussing about how much turbo lag the car had.
The tuner just stood there and suggest a few thousand dollars more of fuel and electronic boost controllers the car needed to make the 400 fwhp it was clearly capable of...
The import guys left before they could see my T/A put down 323 rwhp & 335 rwtq...
Teching In
Joined: Nov 2001
Posts: 48
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From: Honolulu, Hawaii
Re: Dynojet experiences/opinions. DynoJet Dyno have the ability to add a load.
IF the shop purchased that option.
One of the main benefits of tuning on the Dyno is you can tune the car w/o a load to get you in the ballpark w/o stressing the engine you just built.
Once you get it there you switch over to the DynoTrac side and add load to do the "real world tuning", simulating the drag induced by driving it down the trac.
Just my .02 <img src="images/icons/grin.gif" border="0">
IF the shop purchased that option.
One of the main benefits of tuning on the Dyno is you can tune the car w/o a load to get you in the ballpark w/o stressing the engine you just built.
Once you get it there you switch over to the DynoTrac side and add load to do the "real world tuning", simulating the drag induced by driving it down the trac.
Just my .02 <img src="images/icons/grin.gif" border="0">
Thread Starter
SSU Moderator
Joined: Nov 2001
Posts: 4,857
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From: Austin, TX
Re: Dynojet experiences/opinions. [quote]Originally posted by Bode:
<strong>DynoJet Dyno have the ability to add a load.
IF the shop purchased that option.
One of the main benefits of tuning on the Dyno is you can tune the car w/o a load to get you in the ballpark w/o stressing the engine you just built.
Once you get it there you switch over to the DynoTrac side and add load to do the "real world tuning", simulating the drag induced by driving it down the trac.
Just my .02 <img src="images/icons/grin.gif" border="0"> </strong><hr></blockquote>
So if one had the DynoTrac option, could they run the dyno with AND without it?? This is the equivilent of a Mustang dyno, correct? Do you have any experience with this? Would it be hard to operate?
Ryan
<strong>DynoJet Dyno have the ability to add a load.
IF the shop purchased that option.
One of the main benefits of tuning on the Dyno is you can tune the car w/o a load to get you in the ballpark w/o stressing the engine you just built.
Once you get it there you switch over to the DynoTrac side and add load to do the "real world tuning", simulating the drag induced by driving it down the trac.
Just my .02 <img src="images/icons/grin.gif" border="0"> </strong><hr></blockquote>
So if one had the DynoTrac option, could they run the dyno with AND without it?? This is the equivilent of a Mustang dyno, correct? Do you have any experience with this? Would it be hard to operate?
Ryan
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Joined: Nov 2001
Posts: 48
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From: Honolulu, Hawaii
Re: Dynojet experiences/opinions. [quote]Originally posted by RyanJackson:
<strong>
So if one had the DynoTrac option, could they run the dyno with AND without it?? This is the equivilent of a Mustang dyno, correct? Do you have any experience with this? Would it be hard to operate?
Ryan</strong><hr></blockquote>
You can run the dyno either way, It's not hard to operate at all. The limiting factor would be the brake temps, although I've never had to terminate a run due to high brake temps.
You can use either the keyboard or the pendant to select how to apply the load limits: By RPM, MPH, or just a percentage of braking power. The brakes are applied to the drum, it's the same brakes that stop the drum after a run.
The only diff is a proportional braking system that allows you to adjust the pressure applied.
I have a 248 with the DynoTrac option.
I've only heard about the Mustang dynos, I've never seen one.
<strong>
So if one had the DynoTrac option, could they run the dyno with AND without it?? This is the equivilent of a Mustang dyno, correct? Do you have any experience with this? Would it be hard to operate?
Ryan</strong><hr></blockquote>
You can run the dyno either way, It's not hard to operate at all. The limiting factor would be the brake temps, although I've never had to terminate a run due to high brake temps.
You can use either the keyboard or the pendant to select how to apply the load limits: By RPM, MPH, or just a percentage of braking power. The brakes are applied to the drum, it's the same brakes that stop the drum after a run.
The only diff is a proportional braking system that allows you to adjust the pressure applied.
I have a 248 with the DynoTrac option.
I've only heard about the Mustang dynos, I've never seen one.
Re: Dynojet experiences/opinions. We get MFBA GP rates of $60 for two pulls, a bit more with wideband.
Wideband feature rocks.
We dyno about 20 cars on above ground dynos in one day.
Wideband feature rocks.
We dyno about 20 cars on above ground dynos in one day.
Thread Starter
SSU Moderator
Joined: Nov 2001
Posts: 4,857
Likes: 0
From: Austin, TX
Re: Dynojet experiences/opinions. Damn Im moving to the Mid West <img src="images/icons/wink.gif" border="0"> 20x$60=lots o cash. <img src="images/icons/smile.gif" border="0"> I dont think i could get away with charging that much on a regular day, much less a GP thing.
Ryan
Ryan
Teching In
Joined: Nov 2001
Posts: 48
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From: Honolulu, Hawaii
Re: Dynojet experiences/opinions. [quote]Originally posted by RyanJackson:
<strong>Bode, is this another one? I replyed to your last message.
Ryan</strong><hr></blockquote>
Oops, thought I sent it out yesterday, just went out now.
Sorry <img src="images/icons/grin.gif" border="0">
<strong>Bode, is this another one? I replyed to your last message.
Ryan</strong><hr></blockquote>
Oops, thought I sent it out yesterday, just went out now.
Sorry <img src="images/icons/grin.gif" border="0">
