[danielescobarg]

Originally Posted by loesch

I have done the backend flash. There aren't any issues. I don't think much has been altered from the stock DME settings other than boost targets and AFRs. It doesn't change anything with regard to the JB4 maps except for 0 and 4. I actually really like it because my car targets up to around 14psi without the JB4. It makes map 4 quite usable as an every day map and also the car doesn't feel slow when warming up. I usually use map 6 though. That's the only other map you'll want to use since the others all taper boost so much up top. IMO I would stay away from the N20 TMAP sensor for now though. I tried that as well and it did not work well.

Here is a before and after of the backend flash.

Before
http://datazap.me/sites/default/file...20_45_17_0.csv

After
http://datazap.me/sites/default/file...2019_08_33.csv

Hey Man. I apreciate your help. It looks much better, I wish you had an after log that was made in the same manner as the before (thewhole rev-range). But from 5000rpms on its much better.

So for the back-end flash, regardless of DME version and mods, if its available then its basically the same? What file are you using? i tried asking on the other forum and got no answer.

Also, do you have any lpfp or hpfp upgrade?

Best,
Daniel

[Newguy123]

Originally Posted by danielescobarg

Hey Man. I apreciate your help. It looks much better, I wish you had an after log that was made in the same manner as the before (thewhole rev-range). But from 5000rpms on its much better.

So for the back-end flash, regardless of DME version and mods, if its available then its basically the same? What file are you using? i tried asking on the other forum and got no answer.

Also, do you have any lpfp or hpfp upgrade?

Best,
Daniel

when you plug cobb unit into obd port it will tell you your ecu version. mine was 98g0b so i loaded the 98g0b flash from terrys big turbo n55 post into acess port manager then loaded into the v3 and flashed my car.. back end flash is worth every penny my car runs soooo much better after the flash. terry sent me a revised flash after i sent him logs that had added timing and changed fuel scalar for the e40 mix i run

[loesch]

Originally Posted by danielescobarg

Hey Man. I apreciate your help. It looks much better, I wish you had an after log that was made in the same manner as the before (thewhole rev-range). But from 5000rpms on its much better.

So for the back-end flash, regardless of DME version and mods, if its available then its basically the same? What file are you using? i tried asking on the other forum and got no answer.

Also, do you have any lpfp or hpfp upgrade?

Best,
Daniel

I do have the FuelIt Walbro inline pump installed just to be safe as I use E85 and no Meth.

[loesch]

Originally Posted by Newguy123

when you plug cobb unit into obd port it will tell you your ecu version. mine was 98g0b so i loaded the 98g0b flash from terrys big turbo n55 post into acess port manager then loaded into the v3 and flashed my car.. back end flash is worth every penny my car runs soooo much better after the flash. terry sent me a revised flash after i sent him logs that had added timing and changed fuel scalar for the e40 mix i run

I'm glad you mentioned that. I need to bug Terry for a flash like yours. I'm planning on using no less than E50 after winter.

[Newguy123]

Originally Posted by loesch

I'm glad you mentioned that. I need to bug Terry for a flash like yours. I'm planning on using no less than E50 after winter.

Yeah there was a good difference in "feel" between the posted "pump" flash and Terry's revised e85 flash. I couldn't be happier the slipping DCT is gone and the car accelerates much smoother when part throttle boosting.running WAY smoother than it ever has and now also does gunshots when floored between shifts I can't believe there isn't more people posting about the driving improvements with stacked tunes vs just s2 jb4 ff/ISO.

[Schmidty335i]

Originally Posted by Newguy123

Yeah there was a good difference in "feel" between the posted "pump" flash and Terry's revised e85 flash. I couldn't be happier the slipping DCT is gone and the car accelerates much smoother when part throttle boosting.running WAY smoother than it ever has and now also does gunshots when floored between shifts I can't believe there isn't more people posting about the driving improvements with stacked tunes vs just s2 jb4 ff/ISO.

thats it iam sold... gonna by a cobb and do the backend flash too! do you recommend the v3? or would the v2 work just fine? i dont really care about any features it has besides being able to flash the car.

[loesch]

Originally Posted by Schmidty335i

thats it iam sold... gonna by a cobb and do the backend flash too! do you recommend the v3? or would the v2 work just fine? i dont really care about any features it has besides being able to flash the car.

V2 and v3 have identical flashing capabilities. You'll get the same results with both.

[Schmidty335i]

Originally Posted by loesch

V2 and v3 have identical flashing capabilities. You'll get the same results with both.

Thanks man. i figure i might as well save a few hundred dollars and go with the v2. put the saved money towards a aftermarket lpfp.

[M-terkait]

Originally Posted by Newguy123

Yeah there was a good difference in "feel" between the posted "pump" flash and Terry's revised e85 flash. I couldn't be happier the slipping DCT is gone and the car accelerates much smoother when part throttle boosting.running WAY smoother than it ever has and now also does gunshots when floored between shifts I can't believe there isn't more people posting about the driving improvements with stacked tunes vs just s2 jb4 ff/ISO.

F-series Ffs we need flash soon :|
not that JB4 is bad in any way but flash is just a better way to go.

[Newguy123]

V2 will flash the bms backend find the cheapest one you can get!

Originally Posted by M-terkait

F-series Ffs we need flash soon :|
not that JB4 is bad in any way but flash is just a better way to go.

Actually the stacked route is pretty solid for now! I'm running E40-50 every fill up and haven't had any issues. Jb4 controls boost where the flash takes care of the fuel/timing...cant have map switching on the fly,limited boost in 1st/2nd gear, gauge hijacking.. etc etc. with just a flash. Plus isn't PTF and the others using Cobb only tunes having issues dialing in an E50 flash?

[Curare86]

Originally Posted by Newguy123

V2 will flash the bms backend find the cheapest one you can get!



Actually the stacked route is pretty solid for now! I'm running E40-50 every fill up and haven't had any issues. Jb4 controls boost where the flash takes care of the fuel/timing...cant have map switching on the fly,limited boost in 1st/2nd gear, gauge hijacking.. etc etc. with just a flash. Plus isn't PTF and the others using Cobb only tunes having issues dialing in an E50 flash?

With vargas stage 2 pushing higher boost, yes. Not sure about with pure though

[Newguy123]

Originally Posted by Curare86

With vargas stage 2 pushing higher boost, yes. Not sure about with pure though

There's guys with stock turbo just FBO Cobb flash only having issues dialing in an E50 flash too...

[Pure Turbos]

We can offer a special price on COBB units for any PURE Stage 1 customers. Feel free to PM with inquiries.

Thanks

[danielescobarg]

We finished out second pure stg1 install today. We are starting to adjust the map 6 boost curves. However, cant seem to get jb4 to datalogg properly. It conects and allows me to change the settings, however, once I start datalogging, it will not show the main blocks moving, and the .csv file will be pretty much 0s across the board.

Any clues?

Best.

Daniel

[Pure Turbos]

Originally Posted by danielescobarg

We finished out second pure stg1 install today. We are starting to adjust the map 6 boost curves. However, cant seem to get jb4 to datalogg properly. It conects and allows me to change the settings, however, once I start datalogging, it will not show the main blocks moving, and the .csv file will be pretty much 0s across the board.

Any clues?

Best.

Daniel

Hi Daniel,

That will be a JB4 specific issue. I'm sure Terry will be happy to help. Shoot him an email: terry@burgertuning.com

-Jesse

[danielescobarg]

Originally Posted by Pure Turbos

Hi Daniel,

That will be a JB4 specific issue. I'm sure Terry will be happy to help. Shoot him an email: terry@burgertuning.com

-Jesse

Fixed, didnt know that on the F30 dataloging only start recording after 1 PSI. All good.

I posted here because this thread became very rich in information and many experts lurk around here. sorry to hijack either way.

now back to Pure related stuff.

did first pull for the F30. This car is not running meth kit, customer is refusing to install it, so we will be tuning with Sunoco GT260 Plus in various mixtures.

This is the first results after a ~95 AKI mixture and a flat 14 PSI boost curve.
It looks very good until 5500 RPMS, were boost drops very quicky and PWM raises too. Not sure whats up, since its very moderate boost. The car is fitted with EWG and the EWG harness is on its way from BMS, but FF wires are installed. Not sure if that weird boost oscillation has anything to do with the lack of the EWG harness. I though those were more necessary on high boost aplciations.

Second concern is AFR, unlike the previous car we did that had meth kit, this one seems to run way rich. Not sure if AFR should be that rich for that low boost.

Let me know what you guys think. on the low-end, fuel seems to permit higher boost, nevertheless, that boost oscillation after 5500 rpms makes me wonder if need to wait for the EWG harness before moving up boost and race gas mixture.

Here it is: this is 4t gear, F30 335, Pure STG1, CPE intercooler, Akrapovic Full exhaust and AFE Intake.



Best,

Daniel

[weehe126]

Looks like boost is going over target and that might be why it is dropping. Is he running ISO? I dont know anything about the electronic wastegate but to me, that looks like a boost leak.

[PeterPure]

I would recommend waiting till you have ewg wires installed. Boost control will be better then.

[danielescobarg]

Originally Posted by Darkhold

I would recommend waiting till you have ewg wires installed. Boost control will be better then.

Yes, that seems to be the issue. Boost control does not respond as good as with Pneumatic waste gate.

Tonight tried some more logs to see if in fact there was a leak, but it turns out its all good, the issue seems to be related completely to boost control.

Either way, did several runs trying to get the most out with the actual set-up. This will at least save me some time when the EWG harness arrives.

This time added more GT plus to get fuel to ~98 AKI

This was the best I could get before started raining. As you can see, boost overshoots and drops. I hope the EWG harness eliminates this oscillation. There seems to be enough fuel to supplement boost, AVG IGN was 0.1. I think with more fine adjustments without the EWG harness, those boost gaps can be minimised. But, will wait for the harness

~20 PSI - 98 AKI - No Meth.



Darkhold, what does your AFR curve looks like when doing 20 PSI? Its crazy how lean it gets, barely holding mid-low 13s in red-line. Curious to see how yours is.

Daniel

[PeterPure]

Originally Posted by danielescobarg

Darkhold, what does your AFR curve looks like when doing 20 PSI? Its crazy how lean it gets, barely holding mid-low 13s in red-line. Curious to see how yours is.
Daniel

It surprises me you are getting 20 psi from a EWG car without EWG wires But it also seems that EWG cars run a tad leaner than pneumatic. Here are some graphs of my car. Here is an older one running 20 psi 2 gear pull:


And here are a few from earlier this week running 17/18 psi:




AFR seems more or less ok.

[1cleann55]

Originally Posted by danielescobarg

Yes, that seems to be the issue. Boost control does not respond as good as with Pneumatic waste gate.

Tonight tried some more logs to see if in fact there was a leak, but it turns out its all good, the issue seems to be related completely to boost control.

Either way, did several runs trying to get the most out with the actual set-up. This will at least save me some time when the EWG harness arrives.

This time added more GT plus to get fuel to ~98 AKI

This was the best I could get before started raining. As you can see, boost overshoots and drops. I hope the EWG harness eliminates this oscillation. There seems to be enough fuel to supplement boost, AVG IGN was 0.1. I think with more fine adjustments without the EWG harness, those boost gaps can be minimised. But, will wait for the harness

~20 PSI - 98 AKI - No Meth.



Darkhold, what does your AFR curve looks like when doing 20 PSI? Its crazy how lean it gets, barely holding mid-low 13s in red-line. Curious to see how yours is.

Daniel

That is disgusting lean i would be scared running around like that

[rhm135]

Hey PT any stage 2 updates for us?