Got the CarBahn tune

[BarryB]

Well I decided to pull the trigger......
Maybe my expectations were low but I am REALLY impressed with this tune. The peak power gains are modest at best but the difference throughout the rpm range is significant and superb. Feels like a new car. I'm loving it and need to be careful with dsc off. Rear tires spin A LOT more :-)

[Lienrocs]

Originally Posted by BarryB

Well I decided to pull the trigger......
Maybe my expectations were low but I am REALLY impressed with this tune. The peak power gains are modest at best but the difference throughout the rpm range is significant and superb. Feels like a new car. I'm loving it and need to be careful with dsc off. Rear tires spin A LOT more :-)

Interesting. I like the power band the GTS offers, it's nice and linear. But everyone loves torque. Keep us updated how you like it moving forward!

[BarryB]

I actually think it is more linear.....not that it needed more torque but it comes on earlier, stronger and linear. This based on my butt dyno not their hp/tq curves which I haven't studied.

[Lienrocs]

Originally Posted by BarryB

I actually think it is more linear.....not that it needed more torque but it comes on earlier, stronger and linear. This based on my butt dyno not their hp/tq curves which I haven't studied.

Awesome! Good to hear! I've been waiting for someone to pull the trigger on this .

[dh3622]

I did the Carbahn tune this past fall. Had a couple of issues which were resolved/corrected but I then ran out of good weather (called Winter here in Wisconsin). So, little or no track time to test everything out before the snow. Waiting for the spring thaw.

[BarryB]

Yup can't wait to see how she does on track now. I needed a tune more that the car but it still feels great........not expecting better lap times because of the above but looking forward to more grins.

[Lienrocs]

Out of curiosity did you ever dyno your car? Its going to make what it makes but it would be interesting to see the difference on a non carbahn car.

[BarryB]

I did not. I actually asked for a before and after but their dyno was committed for the week to their R8's that they were prepping for a race the following week.
I may still ask for it to be done on a down time for their dyno.....
The software load took minutes.....so easy to redo

[BarryB]

Originally Posted by dh3622

I did the Carbahn tune this past fall. Had a couple of issues which were resolved/corrected but I then ran out of good weather (called Winter here in Wisconsin). So, little or no track time to test everything out before the snow. Waiting for the spring thaw.

Fortunately mine's been seamless....

[Lienrocs]

Originally Posted by BarryB

I did not. I actually asked for a before and after but their dyno was committed for the week to their R8's that they were prepping for a race the following week.
I may still ask for it to be done on a down time for their dyno.....
The software load took minutes.....so easy to redo

I keep telling myself the car is fast enough but a tune with a matching factory warranty is too appealing. Do you know if they'll match an extended warranty as well?

[BarryB]

I don't...

[Lienrocs]

Originally Posted by BarryB

I don't...

Definitely questions I should ask them. Just curious if anyone knew here.

[rjd598]

I'd be curious to see what happens when a real warranty claim actually comes up

[dh3622]

Originally Posted by BarryB

I did not. I actually asked for a before and after but their dyno was committed for the week to their R8's that they were prepping for a race the following week.
I may still ask for it to be done on a down time for their dyno.....
The software load took minutes.....so easy to redo

I did a Dinan Flash Tune (Stage 1) back in January 2019. I was to get a 34 HP increase from it. Followed it up with the the Dinan Stage 2 this past fall. Originally, ran the Stage 2 tune in September and did a re-do of it in October. I have all of the Dyno results (original to most recent) which I'll post tomorrow.

[dh3622]

Originally Posted by dh3622

I did a Dinan Flash Tune (Stage 1) back in January 2019. I was to get a 34 HP increase from it. Followed it up with the the Dinan Stage 2 this past fall. Originally, ran the Stage 2 tune in September and did a re-do of it in October. I have all of the Dyno results (original to most recent) which I'll post tomorrow.

Carbahn dyno results on my GTS completed mid-June. Had Pure Stage 2 installed prior to new Kratos BMW S55 Turbo Upgrade, Akrapovic Downpipes, and FTP Motorsport Charge Pipe Kit and numerous tweaks. Results: WHP - 572.43, 546.08 lb/ft Torque. Steve Dinan, Chris MacNaughton and Team were absolutely great to work with again. I can't say enough about these guys. I've had my GTS back for two days; performance/sound are great, absolute beast!

[Lienrocs]

Originally Posted by dh3622

Carbahn dyno results on my GTS completed mid-June. Had Pure Stage 2 installed prior to new Kratos BMW S55 Turbo Upgrade, Akrapovic Downpipes, and FTP Motorsport Charge Pipe Kit and numerous tweaks. Results: WHP - 572.43, 546.08 lb/ft Torque. Steve Dinan, Chris MacNaughton and Team were absolutely great to work with again. I can't say enough about these guys. I've had my GTS back for two days; performance/sound are great, absolute beast!

I'd love to see what that kind of power feels like in a GTS.

Did they do the crank hub as well?

Was that power figure using just distilled water in the tank or is it the water/meth mix the recommend with bigger turbos?

Are you planning on tracking the car? If so, let us know how it performs on track both reliability wise and traction wise.

[dh3622]

They replaced crank hub w/a keyed hub. Per Carbahn, "OEM hub has timing chain sprocket that is not keyed to the hub and can spin/knock the engine out of timing."

Crank hub work was done during my Stage 2 upgrade, last July as well as Pure Stage 2 turbos (now switched out to Kratos turbos), upgraded front heat exchanger, upgraded top intercooler, colder plugs, new rear toe links, G.C. camber plates, software upgrade, corner balance & alignment.

GTS was tested with distilled water in the tank and 93 octane gas (no meth/water mix). Note: Last July, I was told that "they were not doing the water/meth mix as it had an adverse effect on the internal diaphragm of the water injection pump which would fail after the methanol mix was put in."

I do track my GTS and have for the last 3 years.

After my Stage 2 upgrade last July, I had to really focus on the throttle control coming out of corners. The torque range was so short; 3500 to 4000 RPM's up 120 lb/ft, you had to be careful. Now, torque power band/range is far better. Along w/slight turbo lag coming out of corners, torque should be a lot smoother, longer and w/better control.

I wasn't sure when I'd be better my GTS back. So, I had not booked any track events to date. Now, that it is back I will provide some track results.

I do know that, just from the last two days, it is a totally new car. There is so much more power (but smoother power) plus, it is a lot louder. Right now, I'm just inching (and itching) my way up to do a launch control with it as I get comfortable with all of new 'stuff'.

[Lienrocs]

Originally Posted by dh3622

They replaced crank hub w/a keyed hub. Per Carbahn, "OEM hub has timing chain sprocket that is not keyed to the hub and can spin/knock the engine out of timing."

Crank hub work was done during my Stage 2 upgrade, last July as well as Pure Stage 2 turbos (now switched out to Kratos turbos), upgraded front heat exchanger, upgraded top intercooler, colder plugs, new rear toe links, G.C. camber plates, software upgrade, corner balance & alignment.

GTS was tested with distilled water in the tank and 93 octane gas (no meth/water mix). Note: Last July, I was told that "they were not doing the water/meth mix as it had an adverse effect on the internal diaphragm of the water injection pump which would fail after the methanol mix was put in."

I do track my GTS and have for the last 3 years.

After my Stage 2 upgrade last July, I had to really focus on the throttle control coming out of corners. The torque range was so short; 3500 to 4000 RPM's up 120 lb/ft, you had to be careful. Now, torque power band/range is far better. Along w/slight turbo lag coming out of corners, torque should be a lot smoother, longer and w/better control.

I wasn't sure when I'd be better my GTS back. So, I had not booked any track events to date. Now, that it is back I will provide some track results.

I do know that, just from the last two days, it is a totally new car. There is so much more power (but smoother power) plus, it is a lot louder. Right now, I'm just inching (and itching) my way up to do a launch control with it as I get comfortable with all of new 'stuff'.

HECK YEAH.

That's awesome! I'm glad to hear it still works well for a track car and isn't just a dyno queen. That's my big concern doing any power mods. I love the delivery of the GTS. It scarcely feels like an S55 to me. Totally different character. Good to hear it's still nice to drive.

[FormulaMMM]

Originally Posted by Lienrocs

That's my big concern doing any power mods. I love the delivery of the GTS.

+1. I'm trying to figure another 100 whp and 100 ft lbs on corner exit. Incredible gains though. What a monster.

[SYT_Shadow]

This weekend I'll be driving a Stage 2 (catless + tune) GTS which is supposed to be undriveable due to too much midrange power.

[EricSMG]

Sorry, confused. Those dynos are exactly the opposite of linear. The power is much more peaky than stock, with a later/steeper torque ramp up and then a sharper drop off up top. The usable power band is significantly narrower = not linear. That looks much harder to control and thus probably slower in many situations.

Could it be that the softer bottom end/later ramp up (3k vs 4k) allows you to get deep into the throttle earlier and not break traction while the torque ramps up? But then you OP says that traction is now an issue, which is back to my original point.

Please explain as I'm surely missing something here.

[FormulaMMM]

Originally Posted by SYT_Shadow

This weekend I'll be driving a Stage 2 (catless + tune) GTS which is supposed to be undriveable due to too much midrange power.

Did you survive? impressions?