Dynoing our cars. anything I need to know?

[NORCAL SS]

I'm scheduling a dyno run at the shop I use for my LS car stuff and seeing if theres anything different about doing a pull on the abarth.

Turn off esc and hold down button till pops up its off on dash
get it to 4th gear and do a full roll run

Anything im missing?

[2Cool]

Big ass fan for the intercoolers. And just like on both GM and Ford expect an ABS light to come on after a bit as the computer gets concerned with the unmoving wheels, which should reset after a bit of normal driving afterwards.

Please show SAE numbers and not the smoke and mirrors STD or crank HP guesses that every damn vendor for this car likes to use.

[LittleEvil]

3rd gear pull.

[NORCAL SS]

Isnt 4th cloesest to 1.1 ratio on these cars? Thats where u want to dyno. 3rd pull woild give higher numbers which is not right.

[Gigante]

Your are correct NORCALSS, see the specification below:


Availability Standard on Fiat 500 Abarth
Description 1st, 2nd gear: Double Cone
3rd, 4th, 5th, gear: Single Cone
Gear Ratios
1st 3.909
2nd 2.238
3rd 1.520
4th 1.156
5th 0.872
Reverse 3.909
Final-drive Ratio 3.353

[NORCAL SS]

thanks guys. IM just waiting on the fmic and hopefully have time to mod the downpipe this week to get pre tune numbers.

[shagghie]

Supposed to take ESC full off (hold down button 10 seconds until it beeps), yes?

[opiateESP]

If they find that the dyno is acting strange, get them to add a ground. The TPMS system can wreak havock on the dyno preventing any pulls.

[redred]

According to 500 Madness, you need a special $500k dyno:

The other issue is anyone doing dyno runs on these cars (and the 500) is having proper cooling. Most dyno shops are used to doing Hondas and Mustangs and do not have the proper cooling fans for these types of engines.

I just came back from spending a week in Germany with Pogea Racing and seeing their half a million dollar dyno set up and can honestly say that 99% of the dynos folks are using here are not giving them accurate data. I watched Eduard Pogea raise and lower temperatures going to the FIAT by 5-10 degrees to show me how the engine automatically de tunes itself as temps change. It was an eye opener!

We are now on a search for a proper dyno set up since most are not properly equipped for our cars and will not give out proper numbers. Once we find one we will then redo many cars in our stable. The nice part is all the numbers we have stated before have been understated rather then overstated.

[FTY]

4th GEAR PULL
ESC OFF COMPLETELY
E-BRAKE OFF

You will still get abs failure/esc failure lights.....these cars don't like it when they detect the rear wheels not spinning.

[shagghie]

According to 500 Madness, you need a special $500k dyno:

haha, well to be sure you DO still need proper cooling fans... and like, please for love of God don't have the hood open lol.

[LittleEvil]

Scottie be quite lol, hood up or down the difference is minimal.

[krayzielilsmoki]

I dont think the type of dyno is necessary to measure power gain. As long as the base run and the comparing runs are done under the same circumstances. For example regardless if the base run shows 150whp or 500whp the percent change in power should be the same and that is what people should be looking at, not peak HP

[FTY]

I dont think the type of dyno is necessary to measure power gain. As long as the base run and the comparing runs are done under the same circumstances. For example regardless if the base run shows 150whp or 500whp the percent change in power should be the same and that is what people should be looking at, not peak HP

Its all about the curves..THEN peak HP

[stealthy1ss]

I don't see anyone stating that you need to push the Sport button!