1st time to drag strip with the f90 comp

F90bmwmastertech · 08-07-2021, 10:04 PM

Only mod is cat less downpipes. It was a hot and humid south Florida evening! Figure I could pull a 10.7-10.8 once the engine is more broken in and a bit cooler out.
Not sure why my pic is sideways as it’s uploaded correctly but I’m on the right with the 10.9.

https://youtube.com/shorts/0cZS7jnarEQ?feature=share

irablumberg · 08-07-2021, 10:11 PM

I'll assume you were the 10.94 @ 128 rather than the 11.32 @ 133 given the respective 60' times, unless you were launching in RWD mode ;-).

Nice time, but would be good to understand whether the downpipes make a real difference.

F90bmwmastertech · 08-07-2021, 10:35 PM

Quote:

Originally Posted by irablumberg

I'll assume you were the 10.94 @ 128 rather than the 11.32 @ 133 given the respective 60' times, unless you were launching in RWD mode ;-).

Nice time, but would be good to understand whether the downpipes make a real difference.

Yea unfortunately without me doing a baseline run it’ll be all just a guess. Maybe 30awhp? Without a tune or piggyback I’m not getting the full benefit of the Dow pipes.

TrevorM3 · 08-08-2021, 06:21 AM

nice. Lets hit the drag strip up sometime.I haven't went in awhile.

LSM · 08-08-2021, 08:34 AM

Here you go…… right side up

FCX5 · 08-08-2021, 09:16 AM

Quote:

Originally Posted by LSM

Here you go…… right side up

Nice! Just curious who was on your left? It hit an impressive 133 trap speed.

pbonsalb · 08-08-2021, 09:20 AM

A traction limited car that is faster once it has traction.

LSM · 08-08-2021, 09:33 AM

Quote:

Originally Posted by FCX5

Quote:

Originally Posted by LSM

Here you go…… right side up

Nice! Just curious who was on your left? It hit an impressive 133 trap speed.

It's not my slip I just turned the picture right side up for OP

AngryInch · 08-08-2021, 11:10 AM

You should have left the downpipes alone and just went with the JB4... Are you running the stock tune with the cats off? Must throw a code... Hopefully the ECU can adjust fueling. What fuel did you run?

Hirenarora · 08-08-2021, 07:43 PM

Quote:

Originally Posted by FCX5

Quote:

Originally Posted by LSM

Here you go…… right side up

Nice! Just curious who was on your left? It hit an impressive 133 trap speed.

Looks like a F80 M3!

brad65ford · 08-08-2021, 07:53 PM

Nice times for stock!!!

Edit: saw dp's as the mod, did you do Both cat less upper and lower? Evolve dyno'd with stock cats and cat less dp and picked up 60 rwhp.
BTW what was the DA / temp / humidity? Assuming your in fl too so your probably seeing high humidity like me. Excited to see what we run when winter comes.

For reference. Here is what my 19 Comp ran the other day. She’s completely stock but I added 2 gallons of e85. Those dp’s are giving you some more hp for sure 💪🏼

TrevorM3 · 08-08-2021, 07:59 PM

Quote:

Originally Posted by pbonsalb

A traction limited car that is faster once it has traction.

how is a stock f90 traction limited?

F90bmwmastertech · 08-08-2021, 08:55 PM

Quote:

Originally Posted by TrevorM3

nice. Lets hit the drag strip up sometime.I haven't went in awhile.

Hell yea, I won’t go again until it cools off quite a bit tho lol

F90bmwmastertech · 08-08-2021, 08:56 PM

Quote:

Originally Posted by FCX5

Nice! Just curious who was on your left? It hit an impressive 133 trap speed.

My coworkers big turbo 340 on meth and it’s very traction limited

F90bmwmastertech · 08-08-2021, 08:57 PM

Quote:

Originally Posted by AngryInch

You should have left the downpipes alone and just went with the JB4... Are you running the stock tune with the cats off? Must throw a code... Hopefully the ECU can adjust fueling. What fuel did you run?

I specifically didn’t want a jb4 and I don’t mind a CEL. It’s on 93

F90bmwmastertech · 08-08-2021, 08:59 PM

Quote:

Originally Posted by brad65ford

Nice times for stock!!!

Edit: saw dp's as the mod, did you do Both cat less upper and lower? Evolve dyno'd with stock cats and cat less dp and picked up 60 rwhp.
BTW what was the DA / temp / humidity? Assuming your in fl too so your probably seeing high humidity like me. Excited to see what we run when winter comes.

For reference. Here is what my 19 Comp ran the other day. She’s completely stock but I added 2 gallons of e85. Those dp’s are giving you some more hp for sure 💪🏼

Where you at? And don’t have exact numbers but it was about 85 deg and probably 70% humidity lol. Again I’m hoping for like a 10.7 once it cools down and the engine has atleast a few thousand miles on it

brad65ford · 08-08-2021, 09:07 PM

Quote:

Originally Posted by F90bmwmastertech

Where you at? And don’t have exact numbers but it was about 85 deg and probably 70% humidity lol. Again I’m hoping for like a 10.7 once it cools down and the engine has at least a few thousand miles on it

You'll get it for sure when it gets cooler, da lower and less humidity for sure. If you want an extra kick add some E85 to your tank, these bmw's can run it no problem. I'm on the other coast, directly west from you lol, Port Charlotte. I don't blame you for not wanting to tune since there is no said perfect tune yet or at least I don't know of. Also assuming yours is brand new (congrats) and you don't want to void warranty with is totally understandable. How loud is it with full cat less and the stock comp exhaust?

F90bmwmastertech · 08-09-2021, 07:40 AM

Quote:

Originally Posted by brad65ford

You'll get it for sure when it gets cooler, da lower and less humidity for sure. If you want an extra kick add some E85 to your tank, these bmw's can run it no problem. I'm on the other coast, directly west from you lol, Port Charlotte. I don't blame you for not wanting to tune since there is no said perfect tune yet or at least I don't know of. Also assuming yours is brand new (congrats) and you don't want to void warranty with is totally understandable. How loud is it with full cat less and the stock comp exhaust?

I actually have the m performance exhaust too so between that and the Dow pipes steady cruising, WOT it’s not bad at all. It’s the cold start that’s straight obnoxious. I start my car with the garage door closed in the morning lol

brad65ford · 08-09-2021, 07:52 AM

M performance exhaust too! Big pimping bro!

AngryInch · 08-09-2021, 08:27 AM

Hmm I don’t get why some are thinking removing a critical engine part would not affect warranty? You’re increasing the power of the engine, changing the fueling and tune of the car by removing the downpipes as the dme tries to auto tune to compensate for the increased flow. More power, more air and fuel.

It’s not like you simply changed the muffler… what do you have against the jb4?

Not trying to rain on your parade, I just don’t see the logic?

brad65ford · 08-09-2021, 08:36 AM

Quote:

Originally Posted by AngryInch

Hmm I don’t get why some are thinking removing a critical engine part would not affect warranty? You’re increasing the power of the engine, changing the fueling and tune of the car by removing the downpipes as the dme tries to auto tune to compensate for the increased flow. More power, more air and fuel.

It’s not like you simply changed the muffler… what do you have against the jb4?

Not trying to rain on your parade, I just don’t see the logic?

Not sure if this is aimed at me or not regarding what I have against the JB4? Surprised that would even be a question. There is enough people using the JB4 in the n54 pages sharing multiple code and engine malfunction errors using that unit to warranty concern 10 fold. https://www.n54tech.com/forums/showt...=52314&page=34

pbonsalb · 08-09-2021, 09:18 AM

Quote:

Originally Posted by TrevorM3

how is a stock f90 traction limited?

In the post I was responding to, the person was asking about the other car in the race.

08-07-2021, 10:04 PM	#1
F90bmwmastertech Private 107 Rep 86 Posts Drives: 2021 F90 Comp Join Date: Mar 2021 Location: Parkland, FL iTrader: (1)	1st time to drag strip with the f90 comp Only mod is cat less downpipes. It was a hot and humid south Florida evening! Figure I could pull a 10.7-10.8 once the engine is more broken in and a bit cooler out. Not sure why my pic is sideways as it’s uploaded correctly but I’m on the right with the 10.9. https://youtube.com/shorts/0cZS7jnarEQ?feature=share Attached Images Last edited by F90bmwmastertech; 08-07-2021 at 10:10 PM..
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08-07-2021, 10:11 PM	#2
irablumberg Lieutenant 239 Rep 407 Posts Drives: 2021 M5 Competition Join Date: Jul 2014 Location: Portland, OR iTrader: (0)	I'll assume you were the 10.94 @ 128 rather than the 11.32 @ 133 given the respective 60' times, unless you were launching in RWD mode ;-). Nice time, but would be good to understand whether the downpipes make a real difference.
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08-08-2021, 06:21 AM	#4
TrevorM3 Banned 3323 Rep 8,083 Posts Drives: 6.3 AMG Join Date: Apr 2013 Location: Florida iTrader: (0)	nice. Lets hit the drag strip up sometime.I haven't went in awhile.
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08-08-2021, 08:34 AM	#5
LSM Lieutenant Colonel 1118 Rep 1,809 Posts Drives: 2024 Porsche 911 GTS Cab Join Date: Aug 2011 Location: United States iTrader: (0)	Here you go…… right side up Attached Images __________________ 2024 Porsche 911 GTS Cabriolet
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08-08-2021, 09:20 AM	#7
pbonsalb Lieutenant General 5293 Rep 10,686 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	A traction limited car that is faster once it has traction.
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08-08-2021, 11:10 AM	#9
AngryInch Lieutenant 217 Rep 548 Posts Drives: 2021 BMW M5 Comp Join Date: Jul 2021 Location: Canada iTrader: (0)	You should have left the downpipes alone and just went with the JB4... Are you running the stock tune with the cats off? Must throw a code... Hopefully the ECU can adjust fueling. What fuel did you run?
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08-08-2021, 07:53 PM	#11
brad65ford Captain 257 Rep 765 Posts Drives: 2022 M3 Join Date: Oct 2015 Location: fl iTrader: (0)	Nice times for stock!!! Edit: saw dp's as the mod, did you do Both cat less upper and lower? Evolve dyno'd with stock cats and cat less dp and picked up 60 rwhp. BTW what was the DA / temp / humidity? Assuming your in fl too so your probably seeing high humidity like me. Excited to see what we run when winter comes. For reference. Here is what my 19 Comp ran the other day. She’s completely stock but I added 2 gallons of e85. Those dp’s are giving you some more hp for sure 💪🏼 Attached Images Last edited by brad65ford; 08-08-2021 at 08:45 PM..
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08-09-2021, 07:52 AM	#19
brad65ford Captain 257 Rep 765 Posts Drives: 2022 M3 Join Date: Oct 2015 Location: fl iTrader: (0)	M performance exhaust too! Big pimping bro! Last edited by brad65ford; 08-09-2021 at 08:03 AM..
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08-09-2021, 08:27 AM	#20
AngryInch Lieutenant 217 Rep 548 Posts Drives: 2021 BMW M5 Comp Join Date: Jul 2021 Location: Canada iTrader: (0)	Hmm I don’t get why some are thinking removing a critical engine part would not affect warranty? You’re increasing the power of the engine, changing the fueling and tune of the car by removing the downpipes as the dme tries to auto tune to compensate for the increased flow. More power, more air and fuel. It’s not like you simply changed the muffler… what do you have against the jb4? Not trying to rain on your parade, I just don’t see the logic?
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