DB MN Dyno
- Thread starter The Devils Own Chariot
- Start date
The Devils Own Chariot
Active member
Re: DB MN Dyno
Hey guys. I had a disappointing time at the dyno. My bud and his evo made 318 whp.
I made 255 whp on my first pull and then fell to 248 whp after that. I made 240 hp at 3900 RPMs and then it falls flat on its face and makes less than 200 whp at 5000 rpms. Not really sure what is going on there. I was running 18 psi. You were right about the dyno not loading the truck the same. Boost was way down. I took my friend with the evo for a ride and he thinks my truck pulls harder than his 318 whp. Maybe he was just being nice but thats what I was thinking also. I made 332 ft/lbs of torque.
Im wondering if I have a boost leak that is causing me to lose power up top. What do you guys think. I was thinking I was going to make at over 300 whp for sure. I can tell it falls off on top. The truck hates the alky right now. The stock injectors keep 19 psi at 11 AFR. The 12cm turbo exhaust housing cant be choking me down can it?
Hey guys. I had a disappointing time at the dyno. My bud and his evo made 318 whp.
I made 255 whp on my first pull and then fell to 248 whp after that. I made 240 hp at 3900 RPMs and then it falls flat on its face and makes less than 200 whp at 5000 rpms. Not really sure what is going on there. I was running 18 psi. You were right about the dyno not loading the truck the same. Boost was way down. I took my friend with the evo for a ride and he thinks my truck pulls harder than his 318 whp. Maybe he was just being nice but thats what I was thinking also. I made 332 ft/lbs of torque.
Im wondering if I have a boost leak that is causing me to lose power up top. What do you guys think. I was thinking I was going to make at over 300 whp for sure. I can tell it falls off on top. The truck hates the alky right now. The stock injectors keep 19 psi at 11 AFR. The 12cm turbo exhaust housing cant be choking me down can it?
The Devils Own Chariot
Active member
Re: DB MN Dyno
I think I have a theory why my numbers drop off so bad. I did pulls up to 110 mph and did not have it in overdrive. Its that the problem. I can see why the power curve may have dropped off because of that. What gear do you guys normally dyno at?
Oh and Dynojet numbers are 293 whp and 393 ft/lbs
Is that the dyno that most of you use? If thats so Im not doing to bad. I still have more boost to go.
I think I have a theory why my numbers drop off so bad. I did pulls up to 110 mph and did not have it in overdrive. Its that the problem. I can see why the power curve may have dropped off because of that. What gear do you guys normally dyno at?
Oh and Dynojet numbers are 293 whp and 393 ft/lbs
Is that the dyno that most of you use? If thats so Im not doing to bad. I still have more boost to go.
syclone3
Member
Re: DB MN Dyno
I own a Mustang MD500 AWD dyno. I can load a vehicle so hard it will overheat and not turn my rollers in 30 seconds. Regularly get road race cars on the dyno who will do full mapping in a few hours. Its all in how the software is setup for load and what mode the dyno is in. Can simulate real world conditions with the exception of wind resistance. From the dyno to the street with air fuel its as close as .1-.2 . Boost is within 1 psi with most turbo cars. Its a tool. A good tuning tool if used correctly. Can save time and money and be much safer than street tuning. Just depends on what the customer wants to do, how much they value the tuning time and often how much shit they read on the net. Cause everyone knows if its on the net then it is so.
I own a Mustang MD500 AWD dyno. I can load a vehicle so hard it will overheat and not turn my rollers in 30 seconds. Regularly get road race cars on the dyno who will do full mapping in a few hours. Its all in how the software is setup for load and what mode the dyno is in. Can simulate real world conditions with the exception of wind resistance. From the dyno to the street with air fuel its as close as .1-.2 . Boost is within 1 psi with most turbo cars. Its a tool. A good tuning tool if used correctly. Can save time and money and be much safer than street tuning. Just depends on what the customer wants to do, how much they value the tuning time and often how much shit they read on the net. Cause everyone knows if its on the net then it is so.
gkrcr882
SyTyless......for now!
Re: DB MN Dyno
Having it in D, and not in overdrive was the right way to do it for measuring power. You want to have it as close to a 1:1 drive ratio as possible. How did the truck feel when not at WOT? Any off idle stumbles, hesitation, or weird a/f ratios? I'm assuming you also had as much airflow as possible across the IC to keep IATs in line (hard to do inside). If you plan on trying to run higher boost at higher RPMs, you also need enough cam to let all that air in and out. Also have to factor in driveline losses. Good luck with the tuning!
Having it in D, and not in overdrive was the right way to do it for measuring power. You want to have it as close to a 1:1 drive ratio as possible. How did the truck feel when not at WOT? Any off idle stumbles, hesitation, or weird a/f ratios? I'm assuming you also had as much airflow as possible across the IC to keep IATs in line (hard to do inside). If you plan on trying to run higher boost at higher RPMs, you also need enough cam to let all that air in and out. Also have to factor in driveline losses. Good luck with the tuning!
It's just a six
Super Member
Re: DB MN Dyno
Just a comment,,,,if you do not have open roads to tune,it is safer to tune on a dyno.
It will get you in the ball park & it is a good tool to tune.
my two cents.:2cents:
Just a comment,,,,if you do not have open roads to tune,it is safer to tune on a dyno.
It will get you in the ball park & it is a good tool to tune.
my two cents.:2cents:
The Devils Own Chariot
Active member
Re: DB MN Dyno
It sings WOT. I see injectors are at 120% duty. This is with out alcohol
It sings WOT. I see injectors are at 120% duty. This is with out alcohol
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The Devils Own Chariot
Active member
Re: DB MN Dyno
Does this look like a normal syclone power curve? Looks like I was not even reaching 20 psi with DB measuring off the intake manifold. I need to get that up to like 25 or 27 and run the meth.
Does this look like a normal syclone power curve? Looks like I was not even reaching 20 psi with DB measuring off the intake manifold. I need to get that up to like 25 or 27 and run the meth.
The Devils Own Chariot
Active member
Flyin Ryan
hated cuz he drives fords
Re: DB MN Dyno
why's your engine temp so high?
why's your engine temp so high?
The Devils Own Chariot
Active member
Re: DB MN Dyno
On a dyno in 90 degree weather not moving much air with a hot intercooler in the way of the radiator? I thought 220 was normal?
The Devils Own Chariot
Active member
Re: DB MN Dyno
I wonder if its air locked? Its got a new radiator in it. The stock gauge never goes above the quarter mark.
I wonder if its air locked? Its got a new radiator in it. The stock gauge never goes above the quarter mark.
dgoodhue
BuSTeD 4.3
Re: DB MN Dyno
The stock guage doesn't mean crap, the factory guages are all over the place when you compare them from truck to truck. My Syclone barely goes past the bottom mark with a 160 thermostat.
The stock guage doesn't mean crap, the factory guages are all over the place when you compare them from truck to truck. My Syclone barely goes past the bottom mark with a 160 thermostat.
The Devils Own Chariot
Active member
Re: DB MN Dyno
Whats wrong then? Water pump bad?
Whats wrong then? Water pump bad?
Foot Performance
Donating Member
Re: DB MN Dyno
I would think if it was on a dyno with a front mount it would tend to get that hot due to lack of air flow
I would think if it was on a dyno with a front mount it would tend to get that hot due to lack of air flow
Flyin Ryan
hated cuz he drives fords
It's just a six
Super Member
Re: DB MN Dyno
When is the meth going to be used?
What was the average AFR at WOT?
No reason to go past 4500 RPM IIRC,power drops off. or was it 4000 RPM? Stock cam & heads?
When is the meth going to be used?
What was the average AFR at WOT?
No reason to go past 4500 RPM IIRC,power drops off. or was it 4000 RPM? Stock cam & heads?
WyoSyclone
Active member
Re: DB MN Dyno
What's with the Baro, and MAP "HG" readings... something screwy there... I'd also do the ECM/injector power bypass to get your ECM voltage up to the alternator output...
I'd like to see another shot of this screen, zoomed in to that one particular run where the cursor is....
What's with the Baro, and MAP "HG" readings... something screwy there... I'd also do the ECM/injector power bypass to get your ECM voltage up to the alternator output...
I'd like to see another shot of this screen, zoomed in to that one particular run where the cursor is....