[ORIGIN M.]

Originally Posted by SeanWRT

I drove on track with AC on on 100 degree days too. It's reasonable when you're not timing attacking.

It is better than sweating and sticking to the seat.

[M3 Adjuster]

Originally Posted by ORIGIN M.

It is better than sweating and sticking to the seat.

Laptimes or not.. When it's that hot I would rather not add additional stress to the cooling system by cooling me off.

The hotter the coolant and oil get,, the more the car will back out timing to prevent additional heatsoak, causing even worse performance.


Maybe I'm just a racer... but I'm good with the " 2-140" A/C.. - (two windows down at 140mph ..).

Y'all can cruise around with the automatic trans doing the shifting ... the a/c on.. and a drink in the cup holder ..

[M5XDRIVE]

All the M performance parts for the M2, the gains are what? More logical to spend the 5k-10k on non m performance stuff and actually get gains.

Thanks for the review but, big propaganda by BMW to buy their almost useless m performance parts.

[SanchoDivine]

Originally Posted by M3 Adjuster

Laptimes or not.. When it's that hot I would rather not add additional stress to the cooling system by cooling me off.

The hotter the coolant and oil get,, the more the car will back out timing to prevent additional heatsoak, causing even worse performance.


Maybe I'm just a racer... but I'm good with the " 2-140" A/C.. - (two windows down at 140mph ..).

Y'all can cruise around with the automatic trans doing the shifting ... the a/c on.. and a drink in the cup holder ..

Added drag from windows down vs power lost from AC, which hurts more?

Also, he did say something about lag or slack and planning to counter it but wasn't experiencing it.

He also spoke about as well as shown some pretty cool stuff about the M2 performance suspension. Don't get all those settings from the M3/4 m performance suspension which was pretty interesting.

I watch the video on my phone with a 3 year old jumping all over me but I think I either watched a different video than you or you might have skimmed through it.

[adc]

Originally Posted by M3 Adjuster

LOL regarding playa status

Regarding fake news.. I do find it interesting that Bimmerpost commissions people to actually do this sort of review.

I had to laugh when the reviewer indicated he was driving around the entire time on track with the AC on..

Holy heat soak Batman! I mean really.. turn the A/C off when you leave the paddock..

C'mon this is silly, you'll never feel the difference in performance from the 5BHP lost in the A/C system. Not ever. Especially since the compressor is disconnected on WOT.

But you may feel more comfortable with it on, which affects your track performance more. More and more classes of race cars now require driver cooling, especially for endurance events. Gotta be a reason for that.

I don't know about the M2, but the M3 cooling system is unbelievable on track, absolutely remarkable. No reason to not run the A/C on hot days.

[adc]

Thanks OP, great info.

Will you post part 2 here or in a new thread?

[StealYourFace]

Nicely done.

For magazine lap time racers that rubber should certainly help.

[ORIGIN M.]

Grande Iced Americano, damn straight!

Originally Posted by M3 Adjuster

Laptimes or not.. When it's that hot I would rather not add additional stress to the cooling system by cooling me off.

The hotter the coolant and oil get,, the more the car will back out timing to prevent additional heatsoak, causing even worse performance.


Maybe I'm just a racer... but I'm good with the " 2-140" A/C.. - (two windows down at 140mph ..).

Y'all can cruise around with the automatic trans doing the shifting ... the a/c on.. and a drink in the cup holder ..

[M3 Adjuster]

Originally Posted by SanchoDivine

Added drag from windows down vs power lost from AC, which hurts more?

if you are driving on track in the US at any event other than on an empty abandoned track all by yourself.. . the windows are typically required to be down .. even in the rain..


typically. corner workers and any workers managing the paddock also use a whistle to get a driver's attention.. Windows down helps with awareness.

[SanchoDivine]

Originally Posted by M3 Adjuster

if you are driving on track in the US at any event other than on an empty abandoned track all by yourself.. . the windows are typically required to be down .. even in the rain..


typically. corner workers and any workers managing the paddock also use a whistle to get a driver's attention.. Windows down helps with awareness.

The one track day I did in a car was at COTA. Had the windows up, definitely not an empty track. The rest of my track experience is on sport bikes, can't hear shit and race cars are louder. Have to rely on flags from the corner workers, etc. If windows have to be down on cars, my assumption is it probably has more to do with the glass. I'll stick to bikes if I can't use AC while tracking a car, it gets pretty uncomfortable (like heat stroke level) in a car here in TX

[Ghostriderf80]

Originally Posted by Sam@Bimmerpost

BIMMERPOST was at Circuit of the Americas to sample a variety of BMWs equipped with M Performance parts. We had about 2.5 hours of open track time and a number of cars to choose from, including cars with manual transmissions. The standout cars were the ones fully equipped with M Performance upgrades. It was an extremely hot day with temperatures soaring to about 100 degrees. I managed to put together three video reviews. First up: M2 with M Performance parts!

Some additional notes:

As mentioned in my video, these parts are not factory installed. Instead, they are installed at port. The reason, I'm told, is that it's too time consuming to install at the factory. For example, the LSD (on the non-M cars) takes 3 hours to install.

Development of the M Performance parts happens in Germany. There are about 20 people on the team doing extensive testing and development. I'm told that these parts undergo the same level of validation as series parts so you can expect the same level of quality and durability.

On the M2, my favorite parts are the wheels and Michelin Sport Cup 2 tires. You save 8 lbs in total which is great for lowering unsprung weight and improving responses. The addition of Cup 2 tires transforms the handling experience of the M2. The tires feels stiffer, grippier and offer more feedback. Along with the coilover suspension, the M2 package feels tangibly more aggressive and track-ready. I really love the way the M2 looks with its lowered ride height. It looks mean and purposeful.

The M Performance exhaust on the M2 gives off a nice rumble. It sounds more uncorked than the standard exhaust but does not sound 'aftermarket' at all. Its voice remains mature and refined. You may or may not like the Bluetooth loudness controller that's held in the cup holder. On the other hand, the M3 with the M Performance exhaust sounds like an unhinged beast and its loudness flap control is integrated. On the M3, I feel it's a must! On the M2, I would do the wheels and suspension first.


Some official printed materials on the M2 M Performance Parts:

Attachment 1686580


Attachment 1686581


Attachment 1686582


Attachment 1686583

Sorry after that big apex the guy missed I stopped watching. Car is faster cuz of the tires. 4K for the wheels you save 8 lbs total. BBS F1R that size you save more. Car is cool, it would make a reasonable daily driver.

The funny side of it most people who get manual boxes for performance (DCT is performance) have to clue what heel and toe means. They just think its parts of their foot. Like my friend who has a 7spd porsches manual says its cuz you rock your foot on your heel to press the clutch. LOL.

[ORIGIN M.]

Originally Posted by Sam@Bimmerpost

BIMMERPOST was at Circuit of the Americas to sample a variety of BMWs equipped with M Performance parts. We had about 2.5 hours of open track time and a number of cars to choose from, including cars with manual transmissions. The standout cars were the ones fully equipped with M Performance upgrades. It was an extremely hot day with temperatures soaring to about 100 degrees. I managed to put together three video reviews. First up: M2 with M Performance parts!

Some additional notes:

As mentioned in my video, these parts are not factory installed. Instead, they are installed at port. The reason, I'm told, is that it's too time consuming to install at the factory. For example, the LSD (on the non-M cars) takes 3 hours to install.

Development of the M Performance parts happens in Germany. There are about 20 people on the team doing extensive testing and development. I'm told that these parts undergo the same level of validation as series parts so you can expect the same level of quality and durability.

On the M2, my favorite parts are the wheels and Michelin Sport Cup 2 tires. You save 8 lbs in total which is great for lowering unsprung weight and improving responses. The addition of Cup 2 tires transforms the handling experience of the M2. The tires feels stiffer, grippier and offer more feedback. Along with the coilover suspension, the M2 package feels tangibly more aggressive and track-ready. I really love the way the M2 looks with its lowered ride height. It looks mean and purposeful.

The M Performance exhaust on the M2 gives off a nice rumble. It sounds more uncorked than the standard exhaust but does not sound 'aftermarket' at all. Its voice remains mature and refined. You may or may not like the Bluetooth loudness controller that's held in the cup holder. On the other hand, the M3 with the M Performance exhaust sounds like an unhinged beast and its loudness flap control is integrated. On the M3, I feel it's a must! On the M2, I would do the wheels and suspension first.


Some official printed materials on the M2 M Performance Parts:

Attachment 1686580


Attachment 1686581


Attachment 1686582


Attachment 1686583

That's for posting Sam!!

I'd have that A/C blowing ice cold as well.

[M3 Number 86]

Originally Posted by adc

C'mon this is silly, you'll never feel the difference in performance from the 5BHP lost in the A/C system. Not ever. Especially since the compressor is disconnected on WOT.

But you may feel more comfortable with it on, which affects your track performance more. More and more classes of race cars now require driver cooling, especially for endurance events. Gotta be a reason for that.

I don't know about the M2, but the M3 cooling system is unbelievable on track, absolutely remarkable. No reason to not run the A/C on hot days.

I don't know how many hp you lose even in my n/a car but I can definitely feel the difference. You need to reprogram your butt dyno lol

A/C is cool but cool suit is cooler!

[M3 Number 86]

Originally Posted by M3 Adjuster

LOL regarding playa status

Regarding fake news.. I do find it interesting that Bimmerpost commissions people to actually do this sort of review.

I had to laugh when the reviewer indicated he was driving around the entire time on track with the AC on..

Holy heat soak Batman! I mean really.. turn the A/C off when you leave the paddock..

I will say that the cooling is actually pretty good on the F platforms. We're probably just more hardcore.

I'll take that -0.01 difference in lap times for sweating!

edit: but, yeah, does it hurt to have an actual reasonably realistic review anymore (I'm including all car reviews)?

[raysspl]

Wheels on vid & parts catalog are different? What are the wheels on the vid?

[M3 Number 86]

Originally Posted by raysspl

Wheels on vid & parts catalog are different? What are the wheels on the vid?

Eezitec specials. Lol

[cookiesowns]

Originally Posted by M3 Number 86

I can actually hear during the upshifts the power lag I was mainly critical of in the manual car - some sort of electronically controlled power regulation which causes a very slow transition into the next gear/speeds. I'm surprised OP you didn't mention it. It's actually pretty horrible on the track the way it feels. I've commented this in another thread after driving a very nicely done manual M2 with Akra, JRZ, other mods on Pirelli slicks.

Were you in DSC Off or Sport/Sport+? The M2 doesn’t experience the power lag when shifting at near WOT and quick enough to prevent the turbos from losing spool the M2 doesn’t have as an aggressive anti lag as the M3 does.

[M3 Number 86]

Originally Posted by cookiesowns

Were you in DSC Off or Sport/Sport+? The M2 doesnÂ’t experience the power lag when shifting at near WOT and quick enough to prevent the turbos from losing spool the M2 doesnÂ’t have as an aggressive anti lag as the M3 does.

DSC off and sport+ on pirelli slicks. It does have power modulation for sure. I've gone airborne at a 45* tilt, jumped many curbs, drifted many tracks, and compete in time trials. I think dct is better in this car for sure. It's a shame.

My pb iat Buttonwillow is 1:54:7 in a e90 m3 no aero, stock brakes, kw, and safety stuff.

[P1]

[CosmosMpower]

What lap time did you run? I ran 2:34.6 there in May stock with just pads and NT01's. It was around 95-100F also.

https://www.youtube.com/watch?time_c...&v=mBuK3xKD8hs

[cookiesowns]

Originally Posted by M3 Number 86

DSC off and sport+ on pirelli slicks. It does have power modulation for sure. I've gone airborne at a 45* tilt, jumped many curbs, drifted many tracks, and compete in time trials. I think dct is better in this car for sure. It's a shame.

My pb iat Buttonwillow is 1:54:7 in a e90 m3 no aero, stock brakes, kw, and safety stuff.

That's a good time! I don't doubt you can drive, I think it's more so about just understanding the quirks of a car... every car has it.

That said, I've just updated my entire car again to the latest ISTEP as of September. Any bit of power lag that I've felt before between shifts is really smoothed out, on aggressive shifts there's 0 lag. If you're ever in OC you can try it out..

[Jamesembry]

Originally Posted by cookiesowns

That's a good time! I don't doubt you can drive, I think it's more so about just understanding the quirks of a car... every car has it.

That said, I've just updated my entire car again to the latest ISTEP as of September. Any bit of power lag that I've felt before between shifts is really smoothed out, on aggressive shifts there's 0 lag. If you're ever in OC you can try it out..

Latest ISTEP?