M240i on a JB4!!! First in UK

MrFoxy · 03-27-2022, 08:37 AM

Hendo741 · 03-27-2022, 08:59 AM

People be sleeping on the G42. 406 stock and 450 WHP with JB4 doesnt surprise me at all. I have a JB4 and AA catted DP on mine and was able to get a 3.18 0-60 and 11.3 1/4. Did some highway pulls with a 392 charger and 19 GT350. Walked the 392 and dead even with the 350 (it would creep up under power but lose all ground when having to shift).

Heres a dragy:

MrFoxy · 03-27-2022, 09:03 AM

Quote:

Originally Posted by Hendo741

People be sleeping on the G42. 406 stock and 450 WHP with JB4 doesnt surprise me at all. I have a JB4 and AA catted DP on mine and was able to get a 3.18 0-60 and 11.3 1/4. Did some highway pulls with a 392 charger and 19 GT350. Walked the 392 and dead even with the 350 (it would creep up under power but lose all ground when having to shift).

Heres a dragy:

That's pretty impressive mate

H2O_Doc · 03-27-2022, 09:11 AM

Quote:

Originally Posted by Hendo741

People be sleeping on the G42. 406 stock and 450 WHP with JB4 doesnt surprise me at all. I have a JB4 and AA catted DP on mine and was able to get a 3.18 0-60 and 11.3 1/4. Did some highway pulls with a 392 charger and 19 GT350. Walked the 392 and dead even with the 350 (it would creep up under power but lose all ground when having to shift).

Heres a dragy:

😳

XC3LLR8 · 03-27-2022, 05:24 PM

Quote:

Originally Posted by Hendo741

People be sleeping on the G42. 406 stock and 450 WHP with JB4 doesnt surprise me at all. I have a JB4 and AA catted DP on mine and was able to get a 3.18 0-60 and 11.3 1/4. Did some highway pulls with a 392 charger and 19 GT350. Walked the 392 and dead even with the 350 (it would creep up under power but lose all ground when having to shift).

Heres a dragy:

406 is pretty close to what I posted a week or two ago as my expectation...

CTGT2005 · 03-28-2022, 10:18 AM

That's 406whp? Isn't that close to 470 crank?

tubingchamp · 03-28-2022, 10:21 AM

Quote:

Originally Posted by CTGT2005

That's 406whp? Isn't that close to 470 crank?

Yeah..

Most other brands would advertise it that way

CTGT2005 · 03-28-2022, 11:26 AM

Yeah I just did some back of the napkin math. Using a 15% loss factor. It may be even more with a torque converter in all-wheel drive.

ryo- · 03-28-2022, 12:00 PM

Quote:

Originally Posted by CTGT2005

That's 406whp? Isn't that close to 470 crank?

they say it's 406 bhp in the video so it's only like 20 more than the rated engine power.

tubingchamp · 03-28-2022, 12:33 PM

Quote:

Originally Posted by CTGT2005

Yeah I just did some back of the napkin math. Using a 15% loss factor. It may be even more with a torque converter in all-wheel drive.

I remember my 5.0 mustang GT with the advertised 435 hp dynoing in the 360's...

zipstic · 03-28-2022, 12:51 PM

Wow, those are some impressive numbers. The 0-60 with JB4 is almost a full second faster than BMW's stock number of 4.1.

MattM240eye · 03-28-2022, 04:33 PM

I hate that they underrate their engines so much, but I love it too, it's like a surprise when you get a BMW, ". Hmmm let's see how much it actually makes "

kumizi206 · 03-29-2022, 11:06 AM

Hate to be the party pooper but are we sure that's whp? I don't think it is.

I know obviously that's what a dyno measures and the numbers we use in the US but it looks to me like they're using some sort of conversion factor to give us a "brake horsepower" number. The same B58 engine in a RWD Z4 or Supra makes ~380whp. I find it hard to believe it's making over 400 at the wheel with the xDrive.

kumizi206 · 03-29-2022, 11:13 AM

If you watch the video, they got a 0-60 of 3.54 seconds. They also said they couldn't repeat it and got a bunch of 3.8s after.

edit: https://g42.bimmerpost.com/forums/sh...8&postcount=79

MPR · 04-01-2022, 08:43 PM

Have multiple people got 400+ whp stock? That's crazy, and awesome

6speed_M2 · 04-03-2022, 06:32 AM

Quote:

Originally Posted by Hendo741

People be sleeping on the G42. 406 stock and 450 WHP with JB4 doesnt surprise me at all. I have a JB4 and AA catted DP on mine and was able to get a 3.18 0-60 and 11.3 1/4. Did some highway pulls with a 392 charger and 19 GT350. Walked the 392 and dead even with the 350 (it would creep up under power but lose all ground when having to shift).

Heres a dragy:

Is your car on a custom tune? If not, would it even be worth it to do a dyno tune?

What are the air fuel ratios & IAT looking like?

Is there also a 100 octane map for the JB4? I wonder what power increase it would give. I assume it would bump you into the 10 second mark on the 1/4 mile.

Impressive stats my friend! Bravo.

Jack@AUTOID · 04-03-2022, 09:48 AM

Thanks for the share guys.

This is a completely stock car with JB4. Much more to get out of this car 👌🏼

kumizi206 · 04-05-2022, 12:15 PM

Quote:

Originally Posted by MPR

Have multiple people got 400+ whp stock? That's crazy, and awesome

AFAIK, no one has posted a dyno of a stock 2022 M240i with whp numbers. This video clearly says BHP.

kumizi206 · 04-05-2022, 12:19 PM

Quote:

Originally Posted by Jack@AUTOID

Thanks for the share guys.

This is a completely stock car with JB4. Much more to get out of this car ��

Can you guys please post the WHP results? I think that's the number we're more used to in the US instead of BHP.

xcelir8bmw · 04-05-2022, 10:30 PM

Quote:

Originally Posted by kumizi206

Quote:

Originally Posted by MPR

Have multiple people got 400+ whp stock? That's crazy, and awesome

AFAIK, no one has posted a dyno of a stock 2022 M240i with whp numbers. This video clearly says BHP.

406 BHP x .02 is 8.12 diff is about 414WHP

ryo- · 04-05-2022, 11:36 PM

Quote:

Originally Posted by xcelir8bmw

406 BHP x .02 is 8.12 diff is about 414WHP

AFAIK, brake horsepower = engine horsepower

kumizi206 · 04-06-2022, 12:50 PM

Quote:

Originally Posted by xcelir8bmw

406 BHP x .02 is 8.12 diff is about 414WHP

My understanding is BHP is the same crank hp or advertised hp. For an AWD car with an automatic transmission, I would expect 15%+ drivetrain loss.

406 BHP x .85 = 345whp

03-27-2022, 08:37 AM	#1
MrFoxy Lieutenant 377 Rep 416 Posts Drives: F40 M135i. G42 M240i Join Date: Mar 2020 Location: Scotland iTrader: (0)	M240i on a JB4!!! First in UK
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03-27-2022, 08:59 AM	#2
Hendo741 Chief Petty Officer 645 Rep 517 Posts Drives: 22 M4CX / 22 X3MC Join Date: Dec 2021 Location: US iTrader: (0)	People be sleeping on the G42. 406 stock and 450 WHP with JB4 doesnt surprise me at all. I have a JB4 and AA catted DP on mine and was able to get a 3.18 0-60 and 11.3 1/4. Did some highway pulls with a 392 charger and 19 GT350. Walked the 392 and dead even with the 350 (it would creep up under power but lose all ground when having to shift). Heres a dragy: Attached Images __________________
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03-28-2022, 10:18 AM	#6
CTGT2005 Private First Class 103 Rep 102 Posts Drives: 2022 m240i Join Date: Jan 2022 Location: New Hampshire iTrader: (0)	That's 406whp? Isn't that close to 470 crank?
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03-28-2022, 11:26 AM	#8
CTGT2005 Private First Class 103 Rep 102 Posts Drives: 2022 m240i Join Date: Jan 2022 Location: New Hampshire iTrader: (0)	Yeah I just did some back of the napkin math. Using a 15% loss factor. It may be even more with a torque converter in all-wheel drive.
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03-28-2022, 12:51 PM	#11
zipstic Major 484 Rep 1,188 Posts Drives: 2008 e92 335xi Join Date: Sep 2011 Location: Minneapolis iTrader: (1) Garage List 2008 335xi Coupe [10.00]	Wow, those are some impressive numbers. The 0-60 with JB4 is almost a full second faster than BMW's stock number of 4.1. __________________ http://www.ishopwheels.com
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03-28-2022, 04:33 PM	#12
MattM240eye Private 48 Rep 59 Posts Drives: BMW M240i Join Date: Dec 2021 Location: MA iTrader: (0)	I hate that they underrate their engines so much, but I love it too, it's like a surprise when you get a BMW, ". Hmmm let's see how much it actually makes "
	Appreciate 2 mblaucoupe135284.50 MrFoxy376.50 Quote

03-29-2022, 11:06 AM	#13
kumizi206 Private First Class 81 Rep 111 Posts Drives: 22 m240i Join Date: May 2015 Location: Dallas iTrader: (0)	Hate to be the party pooper but are we sure that's whp? I don't think it is. I know obviously that's what a dyno measures and the numbers we use in the US but it looks to me like they're using some sort of conversion factor to give us a "brake horsepower" number. The same B58 engine in a RWD Z4 or Supra makes ~380whp. I find it hard to believe it's making over 400 at the wheel with the xDrive. Last edited by kumizi206; 03-29-2022 at 11:43 AM..
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03-29-2022, 11:13 AM	#14
kumizi206 Private First Class 81 Rep 111 Posts Drives: 22 m240i Join Date: May 2015 Location: Dallas iTrader: (0)	If you watch the video, they got a 0-60 of 3.54 seconds. They also said they couldn't repeat it and got a bunch of 3.8s after. edit: https://g42.bimmerpost.com/forums/sh...8&postcount=79 Last edited by kumizi206; 03-29-2022 at 11:59 AM..
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04-01-2022, 08:43 PM	#15
MPR Lieutenant Colonel 1811 Rep 1,954 Posts Drives: 22 BMW M240i Join Date: Jan 2011 Location: NJ iTrader: (0)	Have multiple people got 400+ whp stock? That's crazy, and awesome
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04-03-2022, 09:48 AM	#17
Jack@AUTOID Lieutenant 1773 Rep 597 Posts Drives: G87 M2, G42 M240i, F87 M2, E36 Join Date: Nov 2017 Location: London, UK iTrader: (0)	Thanks for the share guys. This is a completely stock car with JB4. Much more to get out of this car 👌🏼
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