Piggyback Made the G80 Slower?

weidake · 06-27-2021, 04:42 PM

just came across this video and M3 with the piggy was easily taken out by a stock g82 m4! Thoughts?

https://youtu.be/sYu54oo7gKM

weidake · 06-27-2021, 04:43 PM

btw not my g80 in the video

PLife · 06-27-2021, 06:47 PM

Its possible if the car doesnt like it. But my guess is the g80 guy doesnt know what he is doing.

Murf · 06-27-2021, 07:04 PM

Heat soak is my guess.

weidake · 06-27-2021, 07:14 PM

On the race chip thread there is a report of loss power during a pull, I'm guessing this might be a similar issue.

weidake · 06-27-2021, 07:18 PM

Quote:

Originally Posted by PLife

Its possible if the car doesnt like it. But my guess is the g80 guy doesnt know what he is doing.

1st run in the video m3 pulls away slowly, as soon as m4 shifted into 4th it is game over.

mike@x-ph.com · 06-28-2021, 08:49 AM

the piggyback adds a boost to the stock ECU unless there are other issues causing a drop in the ignition timing i don't see how it would cause a power loss.

Here is a dyno with the JB4 showing the power gains, once its back in stock we will do our own testing and post the dyno results as well

vetteflier · 06-28-2021, 12:18 PM

Interesting. Even on the 3rd run when the M3 jumped, the M4 reeled him in.

PLife · 06-28-2021, 12:43 PM

Ok that m4 cant be stock. It dusted a turbo upgrade supra. “Stock” my ass

06-27-2021, 04:42 PM	#1
weidake Private 473 Rep 82 Posts Drives: 2021 BMW M3, 2017 Ferrari 488 Join Date: Feb 2021 Location: Houston TX iTrader: (0)	Piggyback Made the G80 Slower? just came across this video and M3 with the piggy was easily taken out by a stock g82 m4! Thoughts? https://youtu.be/sYu54oo7gKM
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06-27-2021, 04:43 PM	#2
weidake Private 473 Rep 82 Posts Drives: 2021 BMW M3, 2017 Ferrari 488 Join Date: Feb 2021 Location: Houston TX iTrader: (0)	btw not my g80 in the video
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06-27-2021, 06:47 PM	#3
PLife Lieutenant 648 Rep 494 Posts Drives: X5 M50i, G80 M3 xdrive Join Date: May 2021 Location: IL iTrader: (0)	Its possible if the car doesnt like it. But my guess is the g80 guy doesnt know what he is doing.
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06-27-2021, 07:04 PM	#4
Murf Captain 885 Rep 897 Posts Drives: 2021 G80 M3C - Dravit Grey Join Date: Apr 2011 Location: Florida iTrader: (2)	Heat soak is my guess.
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06-27-2021, 07:14 PM	#5
weidake Private 473 Rep 82 Posts Drives: 2021 BMW M3, 2017 Ferrari 488 Join Date: Feb 2021 Location: Houston TX iTrader: (0)	On the race chip thread there is a report of loss power during a pull, I'm guessing this might be a similar issue.
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06-28-2021, 08:49 AM	#7
mike@x-ph.com BimmerPost Supporting Vendor 24204 Rep 190,807 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	the piggyback adds a boost to the stock ECU unless there are other issues causing a drop in the ignition timing i don't see how it would cause a power loss. Here is a dyno with the JB4 showing the power gains, once its back in stock we will do our own testing and post the dyno results as well __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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06-28-2021, 12:18 PM	#8
vetteflier Captain 474 Rep 609 Posts Drives: 2021 BMW M4 Competition Join Date: Apr 2021 Location: Colorado iTrader: (0)	Interesting. Even on the 3rd run when the M3 jumped, the M4 reeled him in.
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06-28-2021, 12:43 PM	#9
PLife Lieutenant 648 Rep 494 Posts Drives: X5 M50i, G80 M3 xdrive Join Date: May 2021 Location: IL iTrader: (0)	Ok that m4 cant be stock. It dusted a turbo upgrade supra. “Stock” my ass
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