Correct dynomode?

nitro · #1 (**permalink**)

We want to visit a dyno day with a few Crossfires. What i did read so far there seems to be problems with the traction control so the cars dont rev up over a certain rpm or hold power back.
Some talk about pulling fuses, others about pressing a button, also there seem zto be differences between the transmissions?
So is there a "correct" way for that dyno mode (what fuses?) so we dont waste our time and cant get the cars dynoed once we arrive?

apkano · #2 (**permalink**)

Try to arrange for a 4-wheel dyno and you won't have any problem's at all.

oledoc2u · #3 (**permalink**)

eurocharged has it all figured out if you are going to one of theirs...no worries...

32krazy! · #4 (**permalink**)

esp off and do the runs in 3rd gear to 5800 rpm and you should have no issues

bmorgan · #5 (**permalink**)

Quote:

Originally Posted by apkano

Try to arrange for a 4-wheel dyno and you won't have any problem's at all.

LOL.... That will surely take care of the problem!

tighed1 · #6 (**permalink**)

With an automatic pull fuses 17 & 18.
Took me a few tries runs to get a good run cuz the trans kept down shifting.
I think I had to rev to around 4k then get on it to get a good run.
I think....

apkano · #7 (**permalink**)

Quote:

Originally Posted by bmorgan

LOL.... That will surely take care of the problem!

I'm serious. Some chassis dyno's will have a mechanical linkage to turn the front wheels as well as the rears. The whole issue with dyno'ing our cars is the front wheels remaining stationary while the rears are spinning. Since I have no idea where the OP is from or where he's going I made the blanket suggestion that he tries to arrange for a 4 wheel dyno.

For some reason, my car won't do a dyno pull to redline no matter what you do to it. Pull fuses, certain gears, even using the STAR system in dyno mode doesn't work. If I could get to a 4-wheel chassis dyno there would be no problems.

bmorgan · #8 (**permalink**)

Well, I learned something new today. I had never heard of one before. Thanks

Quote:

Originally Posted by apkano

I'm serious. Some chassis dyno's will have a mechanical linkage to turn the front wheels as well as the rears. The whole issue with dyno'ing our cars is the front wheels remaining stationary while the rears are spinning. Since I have no idea where the OP is from or where he's going I made the blanket suggestion that he tries to arrange for a 4 wheel dyno.

For some reason, my car won't do a dyno pull to redline no matter what you do to it. Pull fuses, certain gears, even using the STAR system in dyno mode doesn't work. If I could get to a 4-wheel chassis dyno there would be no problems.

TVT_DESIGN · #9 (**permalink**)

Quote:

Originally Posted by apkano

I'm serious. Some chassis dyno's will have a mechanical linkage to turn the front wheels as well as the rears. The whole issue with dyno'ing our cars is the front wheels remaining stationary while the rears are spinning. Since I have no idea where the OP is from or where he's going I made the blanket suggestion that he tries to arrange for a 4 wheel dyno.

For some reason, my car won't do a dyno pull to redline no matter what you do to it. Pull fuses, certain gears, even using the STAR system in dyno mode doesn't work. If I could get to a 4-wheel chassis dyno there would be no problems.

Then you're doing something wrong. We've gotten every year (04-08) manual and auto to do full red line runs on both 2 wheel and 4 wheel dynos.

STAR is not necessary for this either.

apkano · #10 (**permalink**)

Quote:

Originally Posted by TVT_DESIGN

Then you're doing something wrong. We've gotten every year (04-08) manual and auto to do full red line runs on both 2 wheel and 4 wheel dynos.

STAR is not necessary for this either.

Wasn't just me..........Rob was there as well as a few Mercedes guys......nobody could figure it out.

As I said before......there's no problem if you arrange for a 4-wheel dyno, that spins the front wheel negating the whole issue.

tom2112 · #11 (**permalink**)

That's weird. I was very worried about getting mine dyno'd, but I attended an dyno day with a whole bunch of Neons. The shop doing the dyno looked at me like I had 5 heads when I told them about the dyno issues experienced by folks here in the forum. They said to let them give it a shot and if I wasn't happy with the dyno, they would refund my fee.

They didn't have any trouble, and it dyno'd all the way to 6200 rpm on a single axle dyno. I asked them what they did special, and the guy said 'nuthin'.

Maybe my ECU tune helped in this regard. I don't know. Apkano, is your's tuned?

apkano · #12 (**permalink**)

Not at the time. We were just testing the difference between stock intake and the NeedsWings CAI, no other mods.

TVT_DESIGN · #13 (**permalink**)

You can run these cars to full red line on a single axle dyno. We do all our local testing on a Dynapack for tuning accuracy and have zero issues taking it to red line.

goodgenes79 · #14 (**permalink**)

i used a DYNOCOM single axle e-brake dyno, without a tune. Third gear pull from 2500rpm to 5800, no shifts up or down, just shut down when it hit limiter.

apkano · #15 (**permalink**)

Yup..... for years we've all been making up this grand story of a 5800rpm upper limit just for fun.

tom2112 · #16 (**permalink**)

You're not alone, Apkano. Steve Hellums had the same problem. I know a couple others too, but I can't think of the names. So that makes me wonder what is different about your cars vs. the ones that dyno ok...?

What's your build number? Maybe you have an earlier ECU version than the rest.

zacknolden · #17 (**permalink**)

Quote:

Originally Posted by apkano

I'm serious. Some chassis dyno's will have a mechanical carburetor linkage to turn the front wheels as well as the rears. The whole issue with dyno'ing our cars is the front wheels remaining stationary while the rears are spinning. Since I have no idea where the OP is from or where he's going I made the blanket suggestion that he tries to arrange for a 4 wheel dyno.

For some reason, my car won't do a dyno pull to redline no matter what you do to it. Pull fuses, certain gears, even using the STAR system in dyno mode doesn't work. If I could get to a 4-wheel chassis dyno there would be no problems.

Does arranging a 4-wheel dyno really settled your problem? I am wondering how this thing worked?

Infinite · #18 (**permalink**)

Im curious as well because doing a run to 5800 is pointless...

apkano · #19 (**permalink**)

Quote:

Originally Posted by zacknolden

Does arranging a 4-wheel dyno really settled your problem? I am wondering how this thing worked?

I'm wondering how of all the people who quoted my text....you're the only one who feels the need to edit it to say something that it clearly does not.

ProjectMayhem · #20 (**permalink**)

My car wouldn not dyno under any conditions as well until i got a tune.