[Kponti]

Originally Posted by pbonsalb

You posted 0-60 runs. Can’t tell much about power from those 3 seconds. Try 60-130 to show power gains.

Ahh gotcha now, that actually makes sense.
The reason I used just that metric is cos I noticed when we got this unusually hot weather, the car was sluggish everywhere. Seriously lacking power after I picked up my kiddo from practice especially (always runs 15-20 mons past pickup time smh), and I'm idling in the parking lot waiting.
I would routinely run 3.8-4.2 0-60mph if I tried it out. I didn't want to push the car in this ridiculous hea so I limited to those metrics cos it's fast and doesn't put as much load on the engine in the heat.

I have a few more dragys to confirm so I'm sure there has been 3-4 tenths reduction in a heatsoaked car pre and post blanket.
Also the car stays below 200 degrees pretty regularly now since I got the blanket installed. Requires pushing it a lot to get back up to 210

[Kponti]

Originally Posted by Mo T.

Do you have any 60-130 runs in conditions similar to mine? @pbonsalb had a point about the 60-130 as a better comparison for power loss between mine and yours

I might make a couple of runs just to see what happens.
Don't forget, you are running the same times as I was

[BlueBy]

As per my previous reply to your other [same topic] post:

Heat is your main enemy right now. Also, PLEASE make sure you are running top tier 93oct gasoline and make sure your car is healthy. Good plugs, oil quality, proper tires psi/good condition, quality-clean air filters and so on can go a long way.

Make sure your set M1 or M2 buttons for best results - you must test and see which setup works best for you!

For me, best results are achieved by using the following settings:

For Straight Line - Drag Racing:
- Sport Plus Engine
- Sport Plus Trans (S3)
- Sport suspension (Base model) - Comfort (Comp model)
- 4WD (DO NOT use 4wd sports or MDM)
- TC fully OFF
- Set tires psi (Front 33 and Rear 33); COLD!
- Make runs with a 1/4 tank of gas or maybe a little over. But definitely less than half tank and never at full tank

When racing at 1/8 mile or 1/4 mile tracks, IF surface prep is GOOD, use the same settings as above, but with two exceptions:
- 4WD Sports (its more rear bias in this setting)
- Add roughly 3psi to the front tires (less rolling resistance)

And, if you want a slight/modest bump in power and a slight turbo sound increase, then remove the two little snorkels on each side behind your grills. It will help the car ingest higher volumes of air at higher speeds. Additionally, if not already, remove the charcoal filters & replace stock paper filters with drop-in filters with either BMC or K&N filters.

I hope this helps.

[cyberonetwo]

Based on my dragy runs I'm almost .5 seconds slower 0-60 when 95+ outside vs cooler weather. Fastest time I've clocked is 2.98. I know there are many other factors involved so take it for what it's worth. CA on 91 octane w/ Racechip on "7"

[Kponti]

Originally Posted by cyberonetwo

Based on my dragy runs I'm almost .5 seconds slower 0-60 when 95+ outside vs cooler weather. Fastest time I've clocked is 2.98. I know there are many other factors involved so take it for what it's worth. CA on 91 octane w/ Racechip on "7"

What does it run in 95+ degree weather?

[Danny D]

Originally Posted by Kponti

All brake boosted, didn't see the need to waste my launches in this weather especially when it was just to test the effects of the turbo blanket

https://www.ptpturboblankets.com/pro...5-m-x6-m-m5-m6

How easy or hard was it to install this ??

[jnotrom711]

Originally Posted by cyberonetwo

Based on my dragy runs I'm almost .5 seconds slower 0-60 when 95+ outside vs cooler weather. Fastest time I've clocked is 2.98. I know there are many other factors involved so take it for what it's worth. CA on 91 octane w/ Racechip on "7"

I dont have draggy or measured anything yet. But I can tell you unequivocally the car is slower during the summer (Live in Arizona). The summer temps at the coolest in middle of the night are around 85-90 degrees, and during the day 105-120. My M5C even with 95 octane race gas, is significantly slower. I don't mean just "butt dyno" guessing. Like, it is very obvious, and when temps are under 90 degrees it makes a huge difference.

I don't know how accurate they are but i've even done some pulls with the HP and torque gauges on, and they dont even get close to maxing out in the summer. Full pulls not just launches, but freeway pulls, 0-60, doesn't matter the gauge doesn't get above 450-500hp. Where in the winter it routinely is almost pegged at 620-640.

There is definitely a sensor somewhere working with the ECU, i'm assuming air intake temp that will affect timing, and performance related variables to protect the engine during high temp conditions.

The same was true on my F10.

[jm490]

Originally Posted by jnotrom711

I dont have draggy or measured anything yet. But I can tell you unequivocally the car is slower during the summer (Live in Arizona). The summer temps at the coolest in middle of the night are around 85-90 degrees, and during the day 105-120. My M5C even with 95 octane race gas, is significantly slower. I don't mean just "butt dyno" guessing. Like, it is very obvious, and when temps are under 90 degrees it makes a huge difference.

I don't know how accurate they are but i've even done some pulls with the HP and torque gauges on, and they dont even get close to maxing out in the summer. Full pulls not just launches, but freeway pulls, 0-60, doesn't matter the gauge doesn't get above 450-500hp. Where in the winter it routinely is almost pegged at 620-640.

There is definitely a sensor somewhere working with the ECU, i'm assuming air intake temp that will affect timing, and performance related variables to protect the engine during high temp conditions.

The same was true on my F10.

That’s interesting because in north jersey in grid temps with 94 octane my hp tq gauges never come close to the 620/640 mark. It’s usually at the dash right under the max which doesn’t have a number next to it. I read a thread abiut how they’re a gimmick and what not but still interesting. My car definitely feels much slower at temps over 95 so I do agree with you but now you have me wondering if there’s something up with my car lol… need to find a way to check. Maybe a Dyno run at some point

[jnotrom711]

Originally Posted by jm490

That’s interesting because in north jersey in grid temps with 94 octane my hp tq gauges never come close to the 620/640 mark. It’s usually at the dash right under the max which doesn’t have a number next to it. I read a thread abiut how they’re a gimmick and what not but still interesting. My car definitely feels much slower at temps over 95 so I do agree with you but now you have me wondering if there’s something up with my car lol… need to find a way to check. Maybe a Dyno run at some point

I'll clarify, the HP gauge highest readings are typically on freeway runs, maybe 3rd/4th gear pulls where I have space to get it up there. below say 60-80 MPH, I havent really been able to get it maxed. I also have a 2019, the pre LCI gauge may be a little diff. I have a number at the end which is "640". I do have a racechip black, but ive read conflicting information if that extra power would show up on those gauges or if the gauges are more gimmicky vs accurate.

I'll also note there is noticeable drop in power from doing a lot of runs back to back. Heat soak is definitely a thing on the hot V f90 and f10.

it seems to me to get a perfect launch and the car running 100% optimal there is many variables the car needs everything to be perfect to get max performance. By that I mean, outside temp, altitude, proper fuel, motor not too hot etc, if anything is slightest bit off the ECU backs the power off. Not sure how accurate I am in that, but it's just a "feeling" which is hard to articulate, and measure. So probably more anecdotal than anything. I feel like it's just a finicky motor that wants all conditions perfect before it shows you what it can really do.

My m5 when its hot or not optimal goes from a decently/pretty fast car getting a freeway on ramp, to violent, and a bit scary when it's perfect, and many times have left me a bit like "ok, so thats what its supposed to feel like! that pull was a bit sketchy and this car is A LOT faster than I thought" lol.

[MorPowaM5]

Here are three of my runs. The best one was in May and the other two runs were around mid-July.

[Mo T.]

Originally Posted by MorPowaM5

Here are three of my runs. The best one was in May and the other two runs were around mid-July.

Is you car stock? Fuel?

[MorPowaM5]

Originally Posted by Mo T.

Is you car stock? Fuel?

BM3 Stage 1 OTS 93 tune with just an AWE catback and CCBs.
Waiting until fall comes around to go to a drag strip and get some new numbers. Installed the Eventuri intake, turbo inlets, and forged wheels since these dragy pulls.

[Bsm550]

2020 m550 bone stock run this was in may. The heat def affects the cars performance but maybe something is going on.

[Kponti]

Pretty quick, doesn't seem like this has been affected by heat (unless you are planning to post a mid July/August time slip to compare)

[Bsm550]

This was august 26 2023 82 degrees out but not stock anymore with bmc filters dinan x pipe m5 comp sway bars front and back shit runflat tires granted im in new york sea level helps the cars out a lot but it was muggy and humid as shit

[Kponti]

It's been over 100 degree daily since I got the car so no cool air times to compare.

I do have times with my racechip pre and post blanket though

PRE blanket

[Kponti]

Post blanket
Hotter weather

[pbonsalb]

Half a second reduction is pretty good. The longer 60-130 pull where traction or launch is not a factor gives a good indication. I use water/meth injection in addition to turbine and downpipe wraps. The added octane reduces timing pull and the added cooling reduces IAT. Have you logged IAT on a 60-130 pull?

[Kponti]

I haven't logged anything with this car, honestly I'm very very afraid to.
I've only had the car about 3 months with around 2500 miles on the clock. If I get into logging now, the ECUs will be sent to femto before I realize what's going on and multiple mods done even before I get out of bed.....this is a burden I bear so I'm staying away for now (hence the racechip)

[Desking101]

honestly these cars aren't as bad as some others i've had in the past in terms of losing power in the heat. i had a challenger redeye a couple years ago and that thing was NOTICEABLY slower, like way slower in warm weather. the chiller helped but then your AC doesn't work, and you have to wait for it to cool IATs. that car seriously felt like it was down 150hp if it was over 80 degrees outside

[damianwo]

The worst heat soak was the E55 AMG - the supercharger just shut off and you had to buy a johnson pump in order to fix it. F90 M5 is not that bad but in hot weather I feel like the engine is boiling its so hot.

[Kponti]

The pre facelift E63 (2018-2020) seemed to suffer from heatsoak a lot quicker than the facelifted versions.
My 2021 E63 with a CPC tune was exceptionally resilient to heatsoaking. This was accomplished with running the intercooler pumps all the time the moment it's hit a certain temperature.

I wonder if this can be done on the M5/8s?