Dyno tune vs Street tune
Thread Starter
Staging Lane
Joined: May 2006
Posts: 64
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From: MI, USA
Dyno tune vs Street tune Since this is the advanced tech section, most of you must have your preffered method of tuning.. I have previously just got one my street tuned cars on the dyno and it pulled less then what the dyno tune did.. drove the dyno tune but it didn't feel as fast as the street tune did...
what type of tuning do you prefer and why ??
what type of tuning do you prefer and why ??
A dyno tune will get you close. Get some WB feedback from driving on the street and then adjust the dyno tune to get you even closer.
Dyno's are a good tool, but just that..A tool. They way they simulate the loading effects on the motor is different then the street. Street and track tunes usually (like 90-99% of the time) work the best because they are realistic and in their eviroment.
I think Pro Stock John is the one that likes to drive/race on the Dyno.
Dyno's are a good tool, but just that..A tool. They way they simulate the loading effects on the motor is different then the street. Street and track tunes usually (like 90-99% of the time) work the best because they are realistic and in their eviroment.
I think Pro Stock John is the one that likes to drive/race on the Dyno.
TECH Resident
Joined: Dec 2004
Posts: 845
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From: K-W, Ontario
Its easy, you can do most of the work on the dyno like meassuring timing cell by cell and your trims as well, or building a VE table also. Then you go to the street when you are done and check over your work. Seems to work the best.
Rick
Rick
That thread Adrenalin referenced is a good one! From the discussions on this forum and others the following seems to be the case to me. The short and sweet. Tune the car on the street if you want the street to be where the car shines, tune the car on the track if you want it to be where the car shines, or tune the car on the dyno if you want that to be where the car shines.
More then likely dyno tuning will result in a tune that is too lean for the street. Further, a street tune may result in a car which is lean when launching at the track if your car dead hooks.
More load on the motor needs more fuel, more fuel comming from the appropriate table values in the tune ofcourse. Good luck
More then likely dyno tuning will result in a tune that is too lean for the street. Further, a street tune may result in a car which is lean when launching at the track if your car dead hooks.
More load on the motor needs more fuel, more fuel comming from the appropriate table values in the tune ofcourse. Good luck
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Staging Lane
Joined: May 2006
Posts: 64
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From: MI, USA
Originally Posted by DAPSUPRSLO
More load on the motor needs more fuel, more fuel comming from the appropriate table values in the tune ofcourse. Good luck
Now i know VE is best suited for drivability, but tweaking the settings has actually given me power that i can actually feel
Again, I think most are missing the point. There is a way to do Both.
If you have the correct type of Dyno and tools, you can build all your tables, VE, MAF, ect. Then you can make your power also on the dyno. After all is said and done, you go check it on the street. Yes, the IAT's are different, this is why you hit the street so you can see where to put the scaling in the IAT versus Timing table. All these things come together if done right. But I dont think there is one better route than the other, I think both are needed.
rick
If you have the correct type of Dyno and tools, you can build all your tables, VE, MAF, ect. Then you can make your power also on the dyno. After all is said and done, you go check it on the street. Yes, the IAT's are different, this is why you hit the street so you can see where to put the scaling in the IAT versus Timing table. All these things come together if done right. But I dont think there is one better route than the other, I think both are needed.
rick
TECH Apprentice
Joined: Jun 2002
Posts: 355
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From: Earth
As long as you can accurately measure the engine dynamics you can properly tune - be it on the street or track.
Real load capable dynos are critical for certain applications and can accelerate the process but in the end, are best for low RPM, high load isssues and WOT graphs to impress others.
Real load capable dynos are critical for certain applications and can accelerate the process but in the end, are best for low RPM, high load isssues and WOT graphs to impress others.
Thread Starter
Staging Lane
Joined: May 2006
Posts: 64
Likes: 0
From: MI, USA
well here is the dyno, its from a 2002 trailblazer.. the results show that neither NET gains of the street tune have more power then the dyno..
Althought one thing i did do to the street tune before loading it on the dyno was to set the PE delay to 2,000rpm from 4,750rpm...i have a feeling this might be the factor..
Althought one thing i did do to the street tune before loading it on the dyno was to set the PE delay to 2,000rpm from 4,750rpm...i have a feeling this might be the factor..
We tune on the street with BS3 on my car, its pretty easy to get it setup where everything is rich enough to make good pulls and then only a few good pulls to get everything in range.
