[Kponti]

Originally Posted by M5-Dubai

Boring?? 10.2 1/4 stock aight bud

Unless he is tuned, he is barely faster than a stock LC1 M5c

[eric97hoh]

Originally Posted by Kponti

Unless he is tuned, he is barely faster than a stock LC1 M5c

what time will that a lci m5 comp do ?

[Blackedm5f90]

Originally Posted by eric97hoh

what time will that a lci m5 comp do ?

Holset tested his and did 10.74 for 1/4 mile which is quite a bit far off from a 911 turbo s; so not sure where "it is pretty close to a stock lci comp" is coming from; to bring a 1/4 mile down from 10.74 to 10.02 ... requires a lot of weight shedding, tuning, and bolt on's.

[pbonsalb]

The OP’s friend has a 2018 991.2 911 Turbo S. Car and Driver tested one at 10.7 at 130 in the quarter:

https://www.google.com/amp/s/www.car...y-the-numbers/

C and D tested a 2018 M5 that did 10.9 at 129. The two cars are close enough that a lightly modded M5 should equal or best a stock 911 Turbo S.

https://www.caranddriver.com/reviews...5-test-review/

I agree the 992 911 Turbo S is in a different league and an M5 would need all the mods to equal or beat a stock 911 Turbo S.

Also worth considering that the 991 era 911 Turbo can be modded to the point that the modded M5 would need a built motor to keep up. I nearly bought one earlier this year instead of an M5 and had my list of $15k in mods that would put the car in the high 9 second range in the mid 140s. Maybe later; right now I need the more practical car and can’t have both.

[Kponti]

Originally Posted by Blackedm5f90

Holset tested his and did 10.74 for 1/4 mile which is quite a bit far off from a 911 turbo s; so not sure where "it is pretty close to a stock lci comp" is coming from; to bring a 1/4 mile down from 10.74 to 10.02 ... requires a lot of weight shedding, tuning, and bolt on's.

2018 is a 991.2 good for high 10s at 130mph
2021 is a 992 with 640HP and does low 10s

[AngryInch]

This is why I said boring to the 2018… the new ones are a different animal….

The new gen is more than 640hp to send it at 10.1… underrated for sure.

The M5 CS should keep up to an ‘18..

[onfireX5]

Here are some actual Dragy numbers from my 2018 bone stock M5 and my 2019 bone stock 911 Turbo S on the same “track” both at 3500ish DA to give you an actual comparison of times at a “bad” July summer DA.

2018 M5

[onfireX5]

2019 TTS :

[M5-Dubai]

Originally Posted by AngryInch

This is why I said boring to the 2018… the new ones are a different animal….

The new gen is more than 640hp to send it at 10.1… underrated for sure.

The M5 CS should keep up to an ‘18..

If u have good DA and a good surface with warm tires the 2018 911 turbo s can get 10.2s mate, I think that if I get the HCP Custom tune (825 HP and 1000NM) I can keep up with a 10.2 car even at 4300 lbs

[AngryInch]

You will need a really good tune, light weight rims, good da, race gas or ethanol and downpipes to hit that time or better.

[Blackedm5f90]

Originally Posted by onfireX5

2019 TTS :

still about .75sec difference between both the quarter miles; which is about same for the 992 Turbo S and LCI comp i.e. 10.02 and 10.74ish respectively.

[M5-Dubai]

Originally Posted by AngryInch

You will need a really good tune, light weight rims, good da, race gas or ethanol and downpipes to hit that time or better.

How much Hp do downpipes make, and what do they help from a performance point of view

[AngryInch]

They help when you start pushing big boost and power… especially at stopping your cats from melting down.

[M5-Dubai]

Originally Posted by AngryInch

They help when you start pushing big boost and power… especially at stopping your cats from melting down.

So are they really necessary for 1/4 mile Times or only for 150 Mph+??

[AngryInch]

Any cars in the low 10s or 9s have downpipes. I’m not sure if push these cars very hard with cats.. exhaust temps under big boost must be up there and dangerous levels for the cats. This is why the ecu throws extra fuel when you get into 4-5gear and high speeds… catalyist cooling…

I know Steve Dinan said they only got 20hp or so from cats being removed, but I think that was a conservative tune….