[kern417]

Originally Posted by enemigo13

logs should be done after some WOT pulls. as this ecu will target less right after writing or e.g. after 1-2 WOT pulls. It needs more to make adaptations. Usually stage 1 gives ~1.1 bar (16psi) at ~6200rpm, stage2 gives 1.3 bar (19psi) at the same rpms.

Can you post a stage 2 log that targets 19psi? We have multiple logs posted here and in the fb group that only targets 16.

I also don't see why that's a limitation of the stock downpipe. Why can't we run more boost on Stage 1?

[jackstrath]

Here is my stage 2 93 log

http://www.bootmod3.net/log?id=5d6eccabc090c6521e903371

did do another 2 runs after it but it wont put them in to a chart for some reason, all i get is " generating chart for bootmod3 datalog please wait "

[enemigo13]

here you go :
https://datazap.me/u/enemigo/f30-340...olo=1-3-4-8-10

0x4A2D is intake manifold pressure if you want before throttle it's stat_ladedruck_wert, it's 4 and 5th gears, stock downpipe. 0x4651 is WGDC %.

Originally Posted by kern417

Can you post a stage 2 log that targets 19psi? We have multiple logs posted here and in the fb group that only targets 16.

I also don't see why that's a limitation of the stock downpipe. Why can't we run more boost on Stage 1?

[IMS-340C]

I don't understand increasing boost in stage 2 with the same fuel octane, What about knock ? Usually boost is related to Octane.

Originally Posted by enemigo13

logs should be done after some WOT pulls. as this ecu will target less right after writing or e.g. after 1-2 WOT pulls. It needs more to make adaptations. Usually stage 1 gives ~1.1 bar (16psi) at ~6200rpm, stage2 gives 1.3 bar (19psi) at the same rpms.

[enemigo13]

Originally Posted by IMS-340MP

I don't understand increasing boost in stage 2 with the same fuel octane, What about knock ? Usually boost is related to Octane.

and I don’t understand why not to use stock turbo to it’s limits (near 90% wgdc)

[IMS-340C]

You can use stock turbo near it's limits, you just have to inject more fuel and use higher octane to match.

Originally Posted by enemigo13

and I don’t understand why not to use stock turbo to it’s limits (near 90% wgdc)

[enemigo13]

Originally Posted by IMS-340MP

You can use stock turbo near it's limits, you just have to use higher octane to match.

higher octane - the better of course. do you know how modern ecus (ok e.g. stock tunes) compensate lower ignition timing because of worse quality fuel to get the same torque/power? yes, boosting more. modern ecus target not to boost or load, they target to torque. if IAT is low (winter) fuel quality very good- targets to less boost, if ambient temperatures are high, fuel is not perfect - targeting to higher boost, that customer would not complain that car is slow comparing to one it was in winter. stock tunes usually have pretty lots of headroom for this, when you maxx out turbo you know that your winter dragy times will be better than summer ones for sure..

[IMS-340C]

yes but there's a limit on how much compensation the ECU makes, if fuel is really bad and weather very hot it will not be able to achieve the required power otherwise it will blow the engine.

Originally Posted by enemigo13

higher octane - the better of course. do you know how modern ecus (ok e.g. stock tunes) compensate lower ignition timing because of worse quality fuel to get the same torque/power? yes, boosting more. modern ecus target not to boost or load, they target to torque. if IAT is low (winter) fuel quality very good- targets to less boost, if ambient temperatures are high, fuel is not perfect - targeting to higher boost, that customer would not complain that car is slow comparing to one it was in winter. stock tunes usually have pretty lots of headroom for this, when you maxx out turbo you know that your winter dragy times will be better than summer ones for sure..

[enemigo13]

Originally Posted by IMS-340MP

yes but there's a limit on how much compensation the ECU makes, if fuel is really bad and weather very hot it will not be able to achieve the required power otherwise it will blow the engine.

most of the times it surely can compensate with stock tune. lot’s of headroom

[IMS-340C]

Not as you think, if the engine starts knocking there's not much the ECU can do.

Originally Posted by enemigo13

most of the times it surely can compensate with stock tune. lot’s of headroom

[kern417]

Originally Posted by enemigo13

here you go :
https://datazap.me/u/enemigo/f30-340...olo=1-3-4-8-10

0x4A2D is intake manifold pressure if you want before throttle it's stat_ladedruck_wert, it's 4 and 5th gears, stock downpipe. 0x4651 is WGDC %.

what tune are you running?

Originally Posted by IMS-340MP

yes but there's a limit on how much compensation the ECU makes, if fuel is really bad and weather very hot it will not be able to achieve the required power otherwise it will blow the engine.

octane isn't as big of an issue as fueling for boost. you just need to keep afrs in control. you can run a lot of boost and less timing to make similar power.

boost limitation is based on fuel cap
timing limitation is based on octane

both have an efficiency range where going past the peak point will not make more power or could lose power.

[Solid67]

Originally Posted by kern417

So one of the reasons I made this thread is being shown. I'm having trouble seeing the difference between Stage 1 and Stage 2. Are there any other stage 2 logs out there? I thought it had a higher boost target. And I don't really see how it's taking advantage of a downpipe or why it's needed.

I have to agree with you on not really knowing the difference between Stg 1 and Stg 2 whether its 91, 93 or E30. Looking at different logs, its really hard to tell what the difference between the two are since boost and timing almost look the same.

[enemigo13]

Originally Posted by kern417

what tune are you running?

tune is my made, but you can check mission performance logs, they run ~1.3 bar also. imho nothing more can be done with stock turbo, it’s about the limit.

[Solid67]

Originally Posted by enemigo13

tune is my made, but you can check mission performance logs, they run ~1.3 bar also. imho nothing more can be done with stock turbo, it’s about the limit.

Stock turbo should be good for over 500awhp so I dont think you are at the limit unless you have dynoed your car. Go check out Pure Turbos IG story from today and you will see they posted the dyno from Tom Wrigley's M240i which has BM3, catless dp, drop in filter, wagner heat exchange. They used a combination of E40/Meth to hit 505awhp and 700nm (not sure how much torque that is). Seen guys running as high as 23psi on the stock turbo (I believe one forum member even took it up to 25psi).

If we factor in the B58TU turbo, those can come close to putting down 525-550hp and same for tq (maybe even higher tq). I know the turbo is different, but not really sure what the difference is in terms of the compressor and turbine.

I'm coming close to pulling the trigger on the BMS meth kit or the Fuel-It! CPI kit so I can max out the stock turbo.

[GT500R]

Originally Posted by enemigo13

tune is my made, but you can check mission performance logs, they run ~1.3 bar also. imho nothing more can be done with stock turbo, it’s about the limit.

Correct, in addition the load is a bit higher compared to other logs (from what I can see), since I assume this is the only apples to apples you can do to understand how logs with different tuners stack up, right?

LOAD: Load can be thought of as the amount of air entering your engine at a certain engine speed. Load is an approximation of your motor’s torque output calculated using the the amount of airflow entering the motor, engine RPM, and a scaling constant. The amount of airflow entering the motor (measured in grams/second or pounds/minute) is measured either directly using a Mass Airflow Sensor (MAF) or calculated using a Manifold Absolute Pressure Sensor (MAP)

[kern417]

Originally Posted by Solid67

I'm coming close to pulling the trigger on the BMS meth kit or the Fuel-It! CPI kit so I can max out the stock turbo.

That's my plan, though it probably won't happen any time soon. All I want is a stock turbo e85 tune. And I'm not too enthusiastic about paying another $500-$600 for one of BM3's tuners to street tune it. Much easier to get a dyno tune and then do the street tune myself. Depending on how much I learn from threads like this and what the hpfp options look like this fall, we'll see.

[B58 parts]

What operating temp do you guys typically see? Mine has always been right at 230F .. which seems kinda high but it's about 40% up on the gauge so I figure that's where it wants to be. Oil / coolant temp both sit right around there. Still though I'm used to 210 being high on most other cars. I'd like to upgrade some of the cooling / make it kick on earlier.

The rest of my numbers at stage 1 are right there with the rest of yours. After wasting almost 3k on brakes .. I plan to go downpipe to stage 2.

[GT500R]

Originally Posted by YuminNuman

What operating temp do you guys typically see? Mine has always been right at 230F .. which seems kinda high but it's about 40% up on the gauge so I figure that's where it wants to be. Oil / coolant temp both sit right around there. Still though I'm used to 210 being high on most other cars. I'd like to upgrade some of the cooling / make it kick on earlier.

The rest of my numbers at stage 1 are right there with the rest of yours. After wasting almost 3k on brakes .. I plan to go downpipe to stage 2.

3rd gear 2k rpm = 226F
3rd gear 6.6k rpm = 233F
4th gear 6.3k rpm = 219F
5th gear 6.2k rpm = 226F

So essentially it rises in 3rd gear, drops massively in 4th and slowly rises in 5th.

IAT goes from 27*C (80*F) to 38*C (100*F) from start of 3rd to 5th 6300 rpm in the same run... which to be honest is amazing IMO

This is MP Tune.

[SC_B5X]

Here's mine. Running a custom tune by Wedge Performance on MHD. It's not fully dialed in yet.

3rd Gear Log: https://datazap.me/u/richmichael97/w...31-32-33-34-35


Fuel: E30 + Meth (50/50)
Mods:

- VRSF 4.5" Catless DP
- Remus Axleback
- Dual Resonator Delete (I don't recommend, it gets a little raspy. I plan on getting a resonator put on)
- AEM V2 Meth Kit (Throttle Body Injected, 2x ProMeth 504cc Nozzles)

Also here is what it runs in the 1/8th mile on this tune:

[enemigo13]

load in my log is stat_lastwert_relativ_wert, in bootmod3 logs it is Load target (Rel.) [%].

Originally Posted by GT500R

Correct, in addition the load is a bit higher compared to other logs (from what I can see), since I assume this is the only apples to apples you can do to understand how logs with different tuners stack up, right?

LOAD: Load can be thought of as the amount of air entering your engine at a certain engine speed. Load is an approximation of your motor’s torque output calculated using the the amount of airflow entering the motor, engine RPM, and a scaling constant. The amount of airflow entering the motor (measured in grams/second or pounds/minute) is measured either directly using a Mass Airflow Sensor (MAF) or calculated using a Manifold Absolute Pressure Sensor (MAP)

[enemigo13]

looking very powerful 187.5% load at 6000rpm with 15deg of timing, ~500hp?

Originally Posted by SC_B5X

Here's mine. Running a custom tune by Wedge Performance on MHD. It's not fully dialed in yet.

3rd Gear Log: https://datazap.me/u/richmichael97/w...31-32-33-34-35


Fuel: E30 + Meth (50/50)
Mods:

- VRSF 4.5" Catless DP
- Remus Axleback
- Dual Resonator Delete (I don't recommend, it gets a little raspy. I plan on getting a resonator put on)
- AEM V2 Meth Kit (Throttle Body Injected, 2x ProMeth 504cc Nozzles)

Also here is what it runs in the 1/8th mile on this tune:

[enemigo13]

23psi with stock turbo WHERE? yes, at 3000rpm it is possible, if you wont crash hpfp, and it is possible without crashing with additional fueling. not possible at 6000+ rpm for sure, so who needs 23psi at 3000rpm?

Originally Posted by Solid67

Stock turbo should be good for over 500awhp so I dont think you are at the limit unless you have dynoed your car. Go check out Pure Turbos IG story from today and you will see they posted the dyno from Tom Wrigley's M240i which has BM3, catless dp, drop in filter, wagner heat exchange. They used a combination of E40/Meth to hit 505awhp and 700nm (not sure how much torque that is). Seen guys running as high as 23psi on the stock turbo (I believe one forum member even took it up to 25psi).

If we factor in the B58TU turbo, those can come close to putting down 525-550hp and same for tq (maybe even higher tq). I know the turbo is different, but not really sure what the difference is in terms of the compressor and turbine.

I'm coming close to pulling the trigger on the BMS meth kit or the Fuel-It! CPI kit so I can max out the stock turbo.