Dyno Tune Process
Thread Starter
Racer
Joined: Feb 2014
Posts: 416
Likes: 2
Dyno Tune Process
While I wait for my A&A to arrive, I called a couple of shops today to get a feel for lead time and pricing of my tune after the sc is installed. I found some differences in the processes described for dyno tuning. Since I've never gone through this before, I thought I'd seek some input.
Shop 1: Said a dyno tune was a nearly all day process. In the first half of the day they start the tune off the dyno by using a laptop and installing a basic table of changes they know must be completed for a blower install. Then they drive it around, do some traces/data logging, and make additional adjustments. This process may (probably will) be repeated several times. He referred to this as "streetability" testing (not my term). Just before lunch, they put the car on the dyno and take a lunch break to allow the car to cool down. After lunch, they start doing pulls and finalize the tune.
Shop 2: Said a tune took several hours but stopped short of all day. They start by installing a baseline profile they know works with the LS1 and A&A v3 Si. Afterwards, they put the car on the dyno and dial it in with a number of pulls. Finally, they street test to ensure everything sounds and feels right--although he felt they pretty much know when they take it off the dyno how it will do. He said street testing is much more important for cars with automatic tranny's than manual. He talked about shift points, transitions, etc.etc..(honestly I tuned out a little here because I have a manual). He said those settings aren't relevant for manual cars; therefore, street testing isn't much more than a full throttle run just to make sure everything feels/sounds right.
So two different philosophies: One with some legwork up front, the other just a basic tune and on the dyno she goes. Curious as to your impressions on these two approaches.
Thx
Shop 1: Said a dyno tune was a nearly all day process. In the first half of the day they start the tune off the dyno by using a laptop and installing a basic table of changes they know must be completed for a blower install. Then they drive it around, do some traces/data logging, and make additional adjustments. This process may (probably will) be repeated several times. He referred to this as "streetability" testing (not my term). Just before lunch, they put the car on the dyno and take a lunch break to allow the car to cool down. After lunch, they start doing pulls and finalize the tune.
Shop 2: Said a tune took several hours but stopped short of all day. They start by installing a baseline profile they know works with the LS1 and A&A v3 Si. Afterwards, they put the car on the dyno and dial it in with a number of pulls. Finally, they street test to ensure everything sounds and feels right--although he felt they pretty much know when they take it off the dyno how it will do. He said street testing is much more important for cars with automatic tranny's than manual. He talked about shift points, transitions, etc.etc..(honestly I tuned out a little here because I have a manual). He said those settings aren't relevant for manual cars; therefore, street testing isn't much more than a full throttle run just to make sure everything feels/sounds right.
So two different philosophies: One with some legwork up front, the other just a basic tune and on the dyno she goes. Curious as to your impressions on these two approaches.
Thx
Intermediate
Joined: Mar 2014
Posts: 44
Likes: 0
From: Columbus Ohio
From my experience it is the shops results with other customers with cars and setups that are similar to yours. A shops reputation usually comes from a great deal of happy and well tuned customers.
good luck on your tune
good luck on your tune
