Fairly Newbie - Dyno Procedures
Thread Starter
Teching In
Joined: Oct 2006
Posts: 15
Likes: 0
From: Geneva, IL
Fairly Newbie - Dyno Procedures I've got an '04 6-speed vert.
I've been to a local dyno once. The outfit was new, when I got home with the printout, I noticed that he did not rev my car up to the redline (only 5200 rpm), which then makes me wonder if "we" might have missed some of the "other" procedures.
I'm in the process of installing a H/C package on my car, and obtaining a mail order tune (to get me started), and will want to go back and get dyno'd to see what increases I've got. But I want to get a fair and accurate dyno reading.
I've just bought HPTuners and will be doing some monitoring before dyno-ing. Maybe tweaking if the fuel trims need it.
Questions: When dyno-ing, do you get the car running in a specific gear and then nail the throttle to WOT up to the redline? Is there a recommended gear? At what base RPM do you go to WOT? Should I let the engine hit the rev limiter? Do you just release the throttle after reaching redline? Do I want to monitor the run with HPTuners? SHould I make use of the dyno's AFR sensor? Should I do some partial throttle runs with HPTuners scanning? If so, are there specific RPM's for part throttle runs?
THanks in advance
Dick
I've been to a local dyno once. The outfit was new, when I got home with the printout, I noticed that he did not rev my car up to the redline (only 5200 rpm), which then makes me wonder if "we" might have missed some of the "other" procedures.
I'm in the process of installing a H/C package on my car, and obtaining a mail order tune (to get me started), and will want to go back and get dyno'd to see what increases I've got. But I want to get a fair and accurate dyno reading.
I've just bought HPTuners and will be doing some monitoring before dyno-ing. Maybe tweaking if the fuel trims need it.
Questions: When dyno-ing, do you get the car running in a specific gear and then nail the throttle to WOT up to the redline? Is there a recommended gear? At what base RPM do you go to WOT? Should I let the engine hit the rev limiter? Do you just release the throttle after reaching redline? Do I want to monitor the run with HPTuners? SHould I make use of the dyno's AFR sensor? Should I do some partial throttle runs with HPTuners scanning? If so, are there specific RPM's for part throttle runs?
THanks in advance
Dick
When dyno-ing, do you get the car running in a specific gear and then nail the throttle to WOT up to the redline? YES
Is there a recommended gear? 4th (which is your 1:1)
At what base RPM do you go to WOT? 2500-3000ish
Should I let the engine hit the rev limiter? I wouldn't but some people do....
Do you just release the throttle after reaching redline? YES
Do I want to monitor the run with HPTuners? YES!
SHould I make use of the dyno's AFR sensor? This is probably the nicest part of being on a dyno.... YES! That is what you are going to value the most.
Should I do some partial throttle runs with HPTuners scanning? YES!
If so, are there specific RPM's for part throttle runs? Whatever you drive in the most...think about how you pass people, hills, etc...
Is there a recommended gear? 4th (which is your 1:1)
At what base RPM do you go to WOT? 2500-3000ish
Should I let the engine hit the rev limiter? I wouldn't but some people do....
Do you just release the throttle after reaching redline? YES
Do I want to monitor the run with HPTuners? YES!
SHould I make use of the dyno's AFR sensor? This is probably the nicest part of being on a dyno.... YES! That is what you are going to value the most.
Should I do some partial throttle runs with HPTuners scanning? YES!
If so, are there specific RPM's for part throttle runs? Whatever you drive in the most...think about how you pass people, hills, etc...
Thread Starter
Teching In
Joined: Oct 2006
Posts: 15
Likes: 0
From: Geneva, IL
Thanks a bunch for the answers, this helps.
The dyno is a Mustang. Brand new one. Just opened up about 3 months ago. The guys there don't do tuning (yet), just High Perf mods primarily on ricers and motorcycles. They had only dyno'd one LS1 before mine.
Funny, when we did my runs, they had the front door open. My Corsa Indy's were so loud that a whole gang came to see what was raising hell in the neighborhood. Then came the complaining neighbors.............
The dyno is a Mustang. Brand new one. Just opened up about 3 months ago. The guys there don't do tuning (yet), just High Perf mods primarily on ricers and motorcycles. They had only dyno'd one LS1 before mine.
Funny, when we did my runs, they had the front door open. My Corsa Indy's were so loud that a whole gang came to see what was raising hell in the neighborhood. Then came the complaining neighbors.............
TECH Enthusiast
Joined: Sep 2004
Posts: 564
Likes: 0
From: Omaha, NE
Because it's a Mustang dyno I agree with 70Stang's answers. With a stock rear-end ratio, sometimes 3rd gear works better then 4th to keep the MPH down, unless you're getting tire slippage. On a Mustang dyno, using 3rd Vs 4th does not show much of a change in HP or TQ. Often our 4th gear pulls show less HP then 3rd due to all of the extra heat being generated with by the tires, etc at very high MPHs. If the customer has a 3.70:1 rear ratio or numerically higher, we usually use 4th on manual transmissions. Good luck.
