[Hit_Apex]

Originally Posted by Koolquest

Also I opted to keep my CSF heat exchanger instead of using the Carbahn Heat exchanger.

Is Carbahn offering the same warranty while using the CSF?

[vetteflier]

Correct. I thought the thread was saying AWD has more hp than RWD. Plus, add 100+ pounds. Will get AWD on my '25--assuming BMW keeps it an ICE or only adds the minor electric which adds zero to overall output but helps accessories.

[hova00]

Originally Posted by vetteflier

Correct. I thought the thread was saying AWD has more hp than RWD. Plus, add 100+ pounds. Will get AWD on my '25—assuming BMW keeps it an ICE or only adds the minor electric which adds zero to overall output but helps accessories.

I had a RWD when the G80 was first released then an AWD. The AWD was a lot quicker in every performance metric. Can’t wait to order MY25. Personally I want ICE…No electric or hybrid for me. This will be my last M3 if BMW decides to move to electrification for the next gen. M3

[BSMG82M4]

Originally Posted by Hit_Apex

Is Carbahn offering the same warranty while using the CSF?

Carbahn is honoring the warranty with the CSF heat exchanger. But really it Thompson BMW performance group that has to make it happen. I won’t let them touch the ECU without having it in writing.

[BSMG82M4]

Originally Posted by vetteflier

Correct. I thought the thread was saying AWD has more hp than RWD. Plus, add 100+ pounds. Will get AWD on my '25—assuming BMW keeps it an ICE or only adds the minor electric which adds zero to overall output but helps accessories.

Carbahn is saying 750HP to the crank. But the drive train to 4 wheels disperses that horsepower to the wheel. RWD gets more horsepower to the wheel but your 0-60 and 1/4 mile times are based on keeping the rubber on the pavement. That’s why we focus on the torque and power across the entire curve. When you get smoked on a rolling race by a charger with 1000 horsepower it’s because the wheels don’t spin at 60MPH like they do on a drag race.

I think the carbahn Tune although not as aggressive as the BM3 or JP4 May give some good track times on stock turbos and downpipes. With that said, we need to see the dyno numbers and the draggy times for 0-60, 1/4 mile and 60-130. Remember there are street races and track races. Street races mean you have the tires you rolled up in. Track races you can throw your Mickey Thompsons on and reduce much of that slip (but put significant forces on your stock drivetrain). Personally I like to go to a meet and race a cocky individual with 1000 hp
to the wheels and listen to them spin out while I am crossing the finish line.

With that said, people in this forum can give you a more technical approach but that’s my two scents.

[G MONEY]

Originally Posted by Koolquest

Carbahn is saying 750HP to the crank. But the drive train to 4 wheels disperses that horsepower to the wheel. RWD gets more horsepower to the wheel but your 0-60 and 1/4 mile times are based on keeping the rubber on the pavement. That’s why we focus on the torque and power across the entire curve. When you get smoked on a rolling race by a charger with 1000 horsepower it’s because the wheels don’t spin at 60MPH like they do on a drag race.

I think the carbahn Tune although not as aggressive as the BM3 or JP4 May give some good track times on stock turbos and downpipes. With that said, we need to see the dyno numbers and the draggy times for 0-60, 1/4 mile and 60-130. Remember there are street races and track races. Street races mean you have the tires you rolled up in. Track races you can throw your Mickey Thompsons on and reduce much of that slip (but put significant forces on your stock drivetrain). Personally I like to go to a meet and race a cocky individual with 1000 hp
to the wheels and listen to them spin out while I am crossing the finish line.

With that said, people in this forum can give you a more technical approach but that’s my two scents.

Yes sir. Drag racing is a thing of the past. Lol. Sure, you want to buy a 5,000 Mustang and build a drag car, be my guest. If your buying a 90,000 BMW and modding it to some real power, you do not want to be drag racing it. Roll racing is where it’s at. WAY less stress on the car. If you keep your M3/4 stock with that low power I’m sure drag racing it will be fine. But who stays stock anyway

[BSMG82M4]

Originally Posted by G MONEY

Yes sir. Drag racing is a thing of the past. Lol. Sure, you want to buy a 5,000 Mustang and build a drag car, be my guest. If your buying a 90,000 BMW and modding it to some real power, you do not want to be drag racing it. Roll racing is where it’s at. WAY less stress on the car. If you keep your M3/4 stock with that low power I’m sure drag racing it will be fine. But who stays stock anyway

I agree on the roll races! For me 60-130 is where it’s at. How many times do you have some scat pack roll up on you on the highway? That’s where those pure turbos and a good tune come in handy.

[BSMG82M4]

Ok, the results from the dyno are in on the pre-tune!

Peak wheel horsepower is 471 HP. Turbos and down pipe stock, no tune. The following performance mods installed:

2022 G82 M4 Competition XDrive
- 3 piece CFS (heat exchanger, transmission oil cooler, charge air cooler manifold)
- mishimoto charge pipe
- eventuri air intake
- Valvetronic exhaust with single midpipe

I will report the post-tune results after the stage 2 carbahn tune is completed with the Femto unlock.

[hova00]

Originally Posted by Koolquest

Ok, the results from the dyno are in on the pre-tune!

Peak wheel horsepower is 471 HP. Turbos and down pipe stock, no tune. The following performance mods installed:

2022 G82 M4 Competition XDrive
- 3 piece CFS (heat exchanger, transmission oil cooler, charge air cooler manifold)
- mishimoto charge pipe
- eventuri air intake
- Valvetronic exhaust with single midpipe

I will report the post-tune results after the stage 2 carbahn tune is completed with the Femto unlock.

Great numbers…Your car looks fantastic!! I look forward to the update.

[BSMG82M4]

Originally Posted by hova00

Great numbers…Your car looks fantastic!! I look forward to the update.

Thank you!

[IDKBRO]

Originally Posted by hova00

According to Carbahn it was an 11whp between stock downpipes amd catless.

Well I’m a little late to the party but I can’t believe that !


I still want to pair mine with a catted AA pipe for that sound.

[IDKBRO]

Originally Posted by hova00

I had a RWD when the G80 was first released then an AWD. The AWD was a lot quicker in every performance metric. Can’t wait to order MY25. Personally I want ICE…No electric or hybrid for me. This will be my last M3 if BMW decides to move to electrification for the next gen. M3

I know this isn’t the thread for this , but I truly wonder how many of us actually mean this.
What if the next gen is a I6 + hybrid motor, it’s out of this world beautiful and better than G8x in every way.
Will many still stay on G8x because it’s ICE or crumble to the superiority of the next gen?

[M4Lou]

Really good numbers on a mustang dyno..

[m4ml]

Originally Posted by Koolquest

Ok, the results from the dyno are in on the pre-tune!

Peak wheel horsepower is 471 HP. Turbos and down pipe stock, no tune. The following performance mods installed:

2022 G82 M4 Competition XDrive
- 3 piece CFS (heat exchanger, transmission oil cooler, charge air cooler manifold)
- mishimoto charge pipe
- eventuri air intake
- Valvetronic exhaust with single midpipe

I will report the post-tune results after the stage 2 carbahn tune is completed with the Femto unlock.

Pretty similar to Carbahn's stock pulls: 484WHP, 471lb-ft WTQ (93 Octane).

Hopefully, you'll see similar claimed gains of 118-134WHP and 76-86lb-ft WTQ (depending on octane).

P.S. I *LOVE* the name of their dyno!

[BSMG82M4]

These mustang dynos are definitely heartbreakers. With that said, we did get consistent numbers from the three pulls and the weather and atmospheric conditions should be similar when we perform the post tune testing. We should see the performance gains from
Carbahn.

In addition, I’ll be taking the car to bimmer invasion and euro race wars so I’m hopping to get good dragy 1/4 mile, 60-130 and 0-60 times. As always, I’ll post the results.

[buffalosojah]

Definitely considering this.

[G MONEY]

Originally Posted by Koolquest

These mustang dynos are definitely heartbreakers. With that said, we did get consistent numbers from the three pulls and the weather and atmospheric conditions should be similar when we perform the post tune testing. We should see the performance gains from
Carbahn.

In addition, I’ll be taking the car to bimmer invasion and euro race wars so I’m hopping to get good dragy 1/4 mile, 60-130 and 0-60 times. As always, I’ll post the results.

That’s what we need. 60-130. Take those dyno numbers down the street

[BSMG82M4]

P3 gauge time after the tune. Ran it on the on-ramp to the highway.

[aremmell]

Originally Posted by G MONEY

That’s what we need. 60-130. Take those dyno numbers down the street

Just read this entire thread because I was planning on getting the CarBahn stage 1 (claimed +90hp), but now that I see real world +77hp for the claimed +120hp on the stage 2, I am having to reconsider. What if I only ended up with +50hp? It wouldn't scratch the itch, and I'd have to get stage 2.

I also realized that my catless downpipes may be a deal breaker for the CarBahn warranty anyway, so at that point, I am free to choose from all tunes if none of them will warranty me.

And my final comment is: why is 60-130 a benchmark we use? It seems arbitrary.

[BSMG82M4]

Ran a quick analysis on the dragy. No fuel, settings were just sport, up hill. Times were still good!

[G MONEY]

Originally Posted by aremmell

Just read this entire thread because I was planning on getting the CarBahn stage 1 (claimed +90hp), but now that I see real world +77hp for the claimed +120hp on the stage 2, I am having to reconsider. What if I only ended up with +50hp? It wouldn't scratch the itch, and I'd have to get stage 2.

I also realized that my catless downpipes may be a deal breaker for the CarBahn warranty anyway, so at that point, I am free to choose from all tunes if none of them will warranty me.

And my final comment is: why is 60-130 a benchmark we use? It seems arbitrary.

Because a Dyno is not going to give you perfect numbers. It can be smoke and mirrors. 60-130 will give you solid info for what your actually making. Last 1/2 mile event I did in the GTR, went up against some Chad in a Turbo R-8 telling me it was 1500 Wheel. That was the slowest 1500 Hp car I ever saw. He got beat all day by cars with 3-400 less claimed HP. So you see my point ? You need real world numbers to show the true Power you are making. Not some knucklehead on a dyno. Dyno the car to get is close, then you street tune to make it perfect.

[Mapper]

Originally Posted by G MONEY

Because a Dyno is not going to give you perfect numbers. It can be smoke and mirrors. 60-130 will give you solid info for what your actually making. Last 1/2 mile event I did in the GTR, went up against some Chad in a Turbo R-8 telling me it was 1500 Wheel. That was the slowest 1500 Hp car I ever saw. He got beat all day by cars with 3-400 less claimed HP. So you see my point ? You need real world numbers to show the true Power you are making. Not some knucklehead on a dyno. Dyno the car to get is close, then you street tune to make it perfect.

Dynos are an expensive precision tool. The problem is all too often the operators improperly use them... can begin with an incorrect CF applied. Doesnt take much to overinflate a number by incorrectly applying a CF of 13% when its supposed to be 4. So much of this over decades has made a general consensus of dynos are wrong. Real world does sort out the noise. But the blame is all too often misdirected to the 50k precison instrument