[baron95]

Great to see it available.

But not sure I understand. A map was developed for the M2, without a dyno? Not sure how that works. Don't you develop a tuning map by actually doing dyno pulls?

[ToneM2]

Originally Posted by r33_RGSport

I know. Wish customer was close by and have plenty of time.

XM is my car, so I can spare time and get dyno whenever.

Can you tell us does the Racechip GTS Black raise power levels up to the same as M3/M4 level of power when those cars use Racechip? Does the Racechip make up for the difference in boost pressure the cars have stock vs stock?

[r33_RGSport]

Originally Posted by baron95

Great to see it available.

But not sure I understand. A map was developed for the M2, without a dyno? Not sure how that works. Don't you develop a tuning map by actually doing dyno pulls?

Initial map already developed in Germany at RaceChip HQ Facility with dyno.
RaceChip US tech and I just confirming the compatibility in US spec with California 91, and tweak as needed.
We do datalog while driving normally with few WOT.

Not all tunes developed by doing Dyno pulls. As you see a lot of flash tuners just grab your stock files and modify the parameters based on what they’ve seen working and even without datalogging.

No one willing to pay a real Dyno tune. Those tuners charge by the hours.

Originally Posted by ToneM2

Can you tell us does the Racechip GTS Black raise power levels up to the same as M3/M4 level of power when those cars use Racechip? Does the Racechip make up for the difference in boost pressure the cars have stock vs stock?

I don’t have a data to back this up since I didn’t Dyno it.
But, based on my butt dyno test and with my best memory on G80 M3 MT with GTS Black, it is about the same.
Unfortunately, I don’t have access to internal mapping data, but as I mentioned, it felt similar to G80 M3 MT.

[T4dey]

Just saw this video with dyno numbers.
https://youtu.be/LZuDyciTuJU?si=CkMNarEHL_ePd0i0

[T4dey]

What’s the main differences between the Racechip and the Dahler unit?

The Dahler unit runs nearly 3x the price.

[rons e92]

Originally Posted by T4dey

What’s the main differences between the Racechip and the Dahler unit?

The Dahler unit runs nearly 3x the price.

As far as I'm aware, it's just the software. The units are almost identical other than the external display on the racechip. Another user said that the Dahler, Racechip, and the Dinan all use the exact same hardware made by Racechip.

Some say the Dahler gives more power, but I haven't seen any back to back dynos to compare.

Obviously you know which route I went.

[r33_RGSport]

Originally Posted by rons e92

As far as I'm aware, it's just the software. The units are almost identical other than the external display on the racechip. Another user said that the Dahler, Racechip, and the Dinan all use the exact same hardware made by Racechip.

Some say the Dahler gives more power, but I haven't seen any back to back dynos to compare.

Obviously you know which route I went.

Based on what I can see from pictures, Dahler is using DTE Tuning boxes. Which, is the old technology of RaceChip Ultimate.
While from the RaceChip side, I can tell you that they do develop their own software and tune.

[ToneM2]

Originally Posted by T4dey

Just saw this video with dyno numbers.
https://youtu.be/LZuDyciTuJU?si=CkMNarEHL_ePd0i0

Guess I’m getting a Racechip. Impressive numbers.

[r33_RGSport]

Originally Posted by ToneM2

Guess I’m getting a Racechip. Impressive numbers.

LMK, I have it in stock, ready to ship.

[ToneM2]

Originally Posted by r33_RGSport

LMK, I have it in stock, ready to ship.

Definitely buying from you guys, I like to support vendors that contribute to forums like this. Will order late next week, we're going away and I want to make sure someone is home when it ships.

[r33_RGSport]

Originally Posted by ToneM2

Definitely buying from you guys, I like to support vendors that contribute to forums like this. Will order late next week, we're going away and I want to make sure someone is home when it ships.

Enjoy your trip.

[baron95]

It's very simple really for piggybacks:

Racechip = has the most modern HW, with built-in Bluetooth, a team of 60 people, 12 engineers, does their own tuning on their own HW. Provides 2 year $10K engine warranty (no extra cost).

Carbahn = licenses the HW from Racechip, claims to do their own tuning, warranty is expensive and extra cost. Even the tune is extra cost.

Dahler = has one extra sensor, HW licensed from 3rd party (RC?), more expensive, seems to be a good box..

JB4 = ancient HW, 1970s DB9 connectors to even add Bluetooth, more complex installation, *BUT* to their credit they are the only ones monitoring CAN bus, offering ethanol (eXX) tunes, etc. If you are doing a lot of mods to run E they are the only game in town.

I personally, will not do any other mods than the piggyback - so I choose to support the most innovative plug and play company = Racechip. I'm glad they exist.

Specially on the G87, which has so much headroom due to the factory detuning, piggyback is a no brainer.

[baron95]

Originally Posted by T4dey

Just saw this video with dyno numbers.
https://youtu.be/LZuDyciTuJU?si=CkMNarEHL_ePd0i0

Nice numbers - the tune seems to have taken it to where the piggybacks take the M3/M4 Competition - i.e. CS/CSL type power.

Question: Why were the front wheels on the dyno turning? Did they set the dyno up in 4WD mode?

Also, would be cool if they posted the installation video - the more times we watch that TMAP sensor being plugged in the better - does not seem easy and each installer has one or two tricks.

[M2siast]

I wonder how the clutch copes with the additional torque, anyone’s got any experience or guesses?

[rons e92]

Originally Posted by M2siast

I wonder how the clutch copes with the additional torque, anyone’s got any experience or guesses?

This is one of the main reasons I went auto. Knew I was going to turn it up and take it roll racing. Definitely didn't want to deal with the clutch slipping, smelling, and needing replacement.

[T4dey]

Originally Posted by baron95

Nice numbers - the tune seems to have taken it to where the piggybacks take the M3/M4 Competition - i.e. CS/CSL type power.

Question: Why were the front wheels on the dyno turning? Did they set the dyno up in 4WD mode?

Also, would be cool if they posted the installation video - the more times we watch that TMAP sensor being plugged in the better - does not seem easy and each installer has one or two tricks.

This.

I saw that and wondered what was going on. Makes no sense. Is that common for a dyno to be connected the the front wheels like that?

[M2siast]

Originally Posted by T4dey

This.

I saw that and wondered what was going on. Makes no sense. Is that common for a dyno to be connected the the front wheels like that?

RaceChip unlocks AWD via piggyback. Plus, the exhaust gets louder because it bypasses the cats.

[T4dey]

Originally Posted by M2siast

RaceChip unlocks AWD via piggyback. Plus, the exhaust gets louder because it bypasses the cats.

Mmmhmmm.

[GT3M2]

Originally Posted by r33_RGSport

LMK, I have it in stock, ready to ship.

Is it possible to request a custom map?

Use case: Street GT rules in Gridlife Time Attack allow for 20 percent increase in boost, possible to get a map for that?

-GT3M2

[baron95]

Originally Posted by GT3M2

Is it possible to request a custom map?

Use case: Street GT rules in Gridlife Time Attack allow for 20 percent increase in boost, possible to get a map for that?

-GT3M2

These Racechip and derivative piggybacks seem to just bump boost by 0.5lbs for each level (1-7). Just choose the corresponding map for your rules.

With the Racechip, the level is displayed right there on the unit, so they can check on impound, though they'd have to trust you are not using Bluetooth to change it during the race.

[GT3M2]

Originally Posted by baron95

These Racechip and derivative piggybacks seem to just bump boost by 0.5lbs for each level (1-7). Just choose the corresponding map for your rules.

With the Racechip, the level is displayed right there on the unit, so they can check on impound, though they'd have to trust you are not using Bluetooth to change it during the race.

Awesome, thank you!

[r33_RGSport]

Originally Posted by GT3M2

Is it possible to request a custom map?

Use case: Street GT rules in Gridlife Time Attack allow for 20 percent increase in boost, possible to get a map for that?

-GT3M2

Unfortunately, no custom mapping program available.