F90 M5 Base Engine Compared to Comp

cali_m5 · 10-02-2023, 05:25 PM

if I was to lets just say blow a comp motor would I be able to put a base engine in my comp and run it no problems and still get the max hp the comp engine have?

LouK · 10-02-2023, 05:42 PM

Tuning is the only difference, hence the reason when you go stage 1,2 the HP/tq is the same wether you are comp or not. IIRC the comp makes slightly more boost up top to account for the difference in HP but not an increase in tq.

cali_m5 · 10-02-2023, 05:48 PM

So at the end of the Day I would be able to install the base engine inside of my comp and still be OK?

pbonsalb · 10-02-2023, 08:24 PM

There is no difference in the motors. Very slight difference in the programming of the ECU operating the motor.

Some say there was a change to the cylinders lining around 2020. No one has said the change has any significance in terms of performance or durability.

Maverik259 · 10-08-2023, 11:15 PM

Same engine. Not sure how you’ll get the computer to like it.

pbonsalb · 10-09-2023, 06:59 AM

The computer won’t know the difference — and there is no difference in motors ir ECUs. The comp computer is flashed with the comp tune, which works fine on the non comp. I have run the comp tune on my non comp.

LouK · 10-09-2023, 01:59 PM

Quote:

Originally Posted by pbonsalb

The computer won’t know the difference — and there is no difference in motors ir ECUs. The comp computer is flashed with the comp tune, which works fine on the non comp. I have run the comp tune on my non comp.

How did you get the comp tune file?

pbonsalb · 10-09-2023, 02:04 PM

BM3 has it

LouK · 10-09-2023, 04:30 PM

Quote:

Originally Posted by pbonsalb

BM3 has it

Pretty cool, I have been trying to hold off on doing a tune. The mod bug is getting strong though.

pbonsalb · 10-09-2023, 04:56 PM

The mod bug got me before I even had the car. I started with a JB4 immediately, added the BMS meth kit a month later, and after about a year installed CTS Turbo high flow primary cats and catless secondaries along with the BM3. I bought the bundle of tunes for the BM3 and tried the Comp tune but it was not noticeable so I went to the Stage 2 for 93 tune with the JB4 just controlling meth. Later, I changed to MAD catless primaries. Then I added 5 psi through the JB4 when the meth is flowing. Also added Xhp trans tune.

10-02-2023, 05:25 PM	#1
cali_m5 Private First Class 27 Rep 103 Posts Drives: 2021 BMW M5 LCI Join Date: Jun 2016 Location: Cali iTrader: (0)	F90 M5 Base Engine Compared to Comp if I was to lets just say blow a comp motor would I be able to put a base engine in my comp and run it no problems and still get the max hp the comp engine have?
	Appreciate 0 Tweet Quote

10-02-2023, 05:42 PM	#2
LouK Second Lieutenant 170 Rep 220 Posts Drives: Ram TRX F90 M5 Join Date: Jun 2022 Location: America iTrader: (0)	Tuning is the only difference, hence the reason when you go stage 1,2 the HP/tq is the same wether you are comp or not. IIRC the comp makes slightly more boost up top to account for the difference in HP but not an increase in tq.
	Appreciate 1 cali_m527.00 Quote

10-02-2023, 05:48 PM	#3
cali_m5 Private First Class 27 Rep 103 Posts Drives: 2021 BMW M5 LCI Join Date: Jun 2016 Location: Cali iTrader: (0)	So at the end of the Day I would be able to install the base engine inside of my comp and still be OK?
	Appreciate 0 Quote

10-02-2023, 08:24 PM	#4
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	There is no difference in the motors. Very slight difference in the programming of the ECU operating the motor. Some say there was a change to the cylinders lining around 2020. No one has said the change has any significance in terms of performance or durability.
	Appreciate 1 cali_m527.00 Quote

10-08-2023, 11:15 PM	#5
Maverik259 Major General 4140 Rep 7,160 Posts Drives: F90 M5 / F15 50i Join Date: Jun 2017 Location: Virginia iTrader: (1) Garage List 2020 BMW M5 [10.00] 2014 X5 50i [0.00]	Same engine. Not sure how you’ll get the computer to like it. __________________ '07 Yamaha R1 (sold) '06 C55 AMG (sold) ‘?20 M5, MP Carbon Pro Spoiler, MP Carbon Diffuser, MP Black grille and gills, MP Carbon Mirrors, CF side sills, 789M w/ Ti studs, eventuri, Dinan X pipe '14 X5 50i (wife’s now)
	Appreciate 0 Quote

10-09-2023, 06:59 AM	#6
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	The computer won’t know the difference — and there is no difference in motors ir ECUs. The comp computer is flashed with the comp tune, which works fine on the non comp. I have run the comp tune on my non comp.
	Appreciate 0 Quote

10-09-2023, 02:04 PM	#8
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	BM3 has it
	Appreciate 0 Quote

10-09-2023, 04:56 PM	#10
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	The mod bug got me before I even had the car. I started with a JB4 immediately, added the BMS meth kit a month later, and after about a year installed CTS Turbo high flow primary cats and catless secondaries along with the BM3. I bought the bundle of tunes for the BM3 and tried the Comp tune but it was not noticeable so I went to the Stage 2 for 93 tune with the JB4 just controlling meth. Later, I changed to MAD catless primaries. Then I added 5 psi through the JB4 when the meth is flowing. Also added Xhp trans tune.
	Appreciate 1 LouK170.00 Quote