[FloridaM5]

@limeypride
gtenedio

Great results for both of you. Either of you have logs from those runs, or any smooth run with good performance?

[limeypride]

Originally Posted by FloridaM5

@limeypride
gtenedio

Great results for both of you. Either of you have logs from those runs, or any smooth run with good performance?

I don't sadly. I don't know why I didn't think of it but alas, I did not.

[gtenedio]

Originally Posted by limeypride

I don't sadly. I don't know why I didn't think of it but alas, I did not.

negative

[FloridaM5]

Thx to you both. are you guys seeing any throttle closures with jb4?

[limeypride]

Originally Posted by FloridaM5

Thx to you both. are you guys seeing any throttle closures with jb4?

Can you elaborate on 'throttle closures'?

If I take a leap as to what that means, then no. I'm not experiencing anything undesirable now that I've got the tune and fuel requirements dialed in.

[FloridaM5]

Originally Posted by limeypride

Can you elaborate on 'throttle closures'?

If I take a leap as to what that means, then no. I'm not experiencing anything undesirable now that I've got the tune and fuel requirements dialed in.

When you log on the jb4, what values are you seeing for throttle position? Is it always open fully, or near there?

Running my car at the drag strip, with race chip, throttle stays open all of the way (logs say 80ish percent which is normal). I went back, with rc removed, and with a mild ecu flash (a starting point), the throttle closes by over half sometimes, which lowers achieved boost and timing. Now, I did read that BMWs operate this way, and that they can make full power when the throttle isn't open all of the way. We are looking into it from an ecu file perspective, and will solve it, just wondering what others are seeing.

Reading other threads, it seems as some other ecu tuners experienced this as well, mentioned they would work through it shortly, but I did not see a resolution.

My amateur reading also turned up that overboost and/or loss of traction can cause the throttle to close partially.

[Fuel-It!]

Originally Posted by FloridaM5

Thx to you both. are you guys seeing any throttle closures with jb4?

Throttle is used to regulate boost on the platform and both throttle blades are largely oversized for the power levels. You can make full power at around 50% throttle. If you log the factory tuning you'll see they cover around 75% most of the time. More than open enough not to limit power in any way but closed enough to be responsible to boost corrections as needed with the EWG system.

[FloridaM5]

Originally Posted by Fuel-It!

Throttle is used to regulate boost on the platform and both throttle blades are largely oversized for the power levels. You can make full power at around 50% throttle. If you log the factory tuning you'll see they cover around 75% most of the time. More than open enough not to limit power in any way but closed enough to be responsible to boost corrections as needed with the EWG system.

Thank you for the response. On some runs I've seen throttle go from 80ish% open (we'll consider that fullyish open I guess) to around 32% open at the end of the 1/4 mile (still accelerating). boost goes down, and eventually timing is pulled back as well. I realize iats, and all of the other things may play a role, but I've seen iats drop as I leave the staging line and get down the track, due to the air flow.

If I added jb4 on top of the flash, and made some tweaks there, controlling the ewg system, would this allow for keeping boost (and all) higher through the end of the run?

[Catchmeifyoucanf90]

Got it down 6.3 with race fuel 100 octane

[FloridaM5]

Originally Posted by Catchmeifyoucanf90

Got it down 6.3 with race fuel 100 octane

awesome! moving! any logs to share?

[Catchmeifyoucanf90]

Originally Posted by FloridaM5

awesome! moving! any logs to share?

Did it not post the dragy?

[FloridaM5]

Originally Posted by Catchmeifyoucanf90

Did it not post the dragy?

it did man....I meant data from the ecu or jb4. dragy looks fast

[Catchmeifyoucanf90]

Originally Posted by FloridaM5

it did man....I meant data from the ecu or jb4. dragy looks fast

Oh naw man that's all I got unfortunately, ruining racechip

[Catchmeifyoucanf90]

Originally Posted by Catchmeifyoucanf90

Oh naw man that's all I got unfortunately, ruining racechip

Other day running on 91

[FloridaM5]

Originally Posted by Catchmeifyoucanf90

Other day running on 91

Originally Posted by Catchmeifyoucanf90

Oh naw man that's all I got unfortunately, ruining racechip

cool cool....good runs!

[TrevorM3]

floridam5, where you located

[Hockeytyme]

Originally Posted by limeypride

Numerous in adhoc road scenarios. More formally, a 2018 AMG E63S with stage 2 Eurocharged, catless DPs and Akra exhaust putting out 680awhp and fully built F10 M5 with claimed 700+whp--I beat them both; the F10 beat the E63S.

https://youtu.be/Egi-Qiqv4BI

Pretty impressive for having no mods

[limeypride]

Originally Posted by Hockeytyme

Pretty impressive for having no mods

It has JB4, pump gas + octane booster and BMC filters--so not quite stock but I was pleased.

For the 100k-200k data in the thread below and short of me working out an equation that ignores physics and is purely math driven, I'm curious to know if there's some 'known' formula that attempts to bring the disparate results closer to an apples-to-apples comparison? Here's what I mean outlined from both perspectives:

: 60mph <--> 130mph = 97kph <--> 209kph
… in MPH, timing starts sooner and ends later relative to KPH
: 100kph <--> 200kph = 62mph <--> 124mph
… in KPH, timing starts later and ends sooner relative to MPH

[limeypride]

Originally Posted by TrevorM3

floridam5, where you located

Errrr… Florida, dude. Sheesh, you ask some obvious shit!

[FSociety]

Originally Posted by Catchmeifyoucanf90

Got it down 6.3 with race fuel 100 octane

Says you're in California ? why using 100-200 (EU standard) should use Units 60-130mph

Originally Posted by FloridaM5

Thank you for the response. On some runs I've seen throttle go from 80ish% open (we'll consider that fullyish open I guess) to around 32% open at the end of the 1/4 mile (still accelerating). boost goes down, and eventually timing is pulled back as well. I realize iats, and all of the other things may play a role, but I've seen iats drop as I leave the staging line and get down the track, due to the air flow.

If I added jb4 on top of the flash, and made some tweaks there, controlling the ewg system, would this allow for keeping boost (and all) higher through the end of the run?

First you have to log the flash in map0 and see what boost its making, there are no benefit of stacking the jb4 without higher octane in most cases.

[Catchmeifyoucanf90]

Just the setting I see most people measure their car so I did the same, but I'll run it again on mph when it comes back from bmw

[FloridaM5]

Originally Posted by FSociety

Says you're in California ? why using 100-200 (EU standard) should use Units 60-130mph

First you have to log the flash in map0 and see what boost its making, there are no benefit of stacking the jb4 without higher octane in most cases.

Cool. Thank you. When racing, I typically run sunocogt260 since local station has it on pump. they also just got a new e85 pump...never used it before though. Highest achieved boost I saw was 21.6.