[PepMo]

Originally Posted by Bmwdoubles_

Are you PWG and do you know what your wastegate is set to? It looks like we're all getting different result.

I changed my wastegate settings many times, but it seems like it did not really do anything. Tightening it only just cause more overboosting. Loosening it causes underboosting. So now I have it at about 7" of vacuum. I think recommended is 6-6.5"?

[Bmwdoubles_]

Originally Posted by PepMo

I changed my wastegate settings many times, but it seems like it did not really do anything. Tightening it only just cause more overboosting. Loosening it causes underboosting. So now I have it at about 7" of vacuum. I think recommended is 6-6.5"?

Yeah i have 6.5. How's 7 working for you?

[PepMo]

It seems normal. All my logs are at 7". I have not touched it since moving to new tuner.

[$howtime456]

Originally Posted by PepMo

I could be wrong. I see that David Shoup can get your WGDC to 100%. I've never seen my WGDC hit 100% before so I don't know what boost you will make up top with it at 100%. You should try single gear pull all the way to redline without shifthing.

Anyone have timed their F10 in the 1/4 mile yet? Anyone broke in the 11s?

11.4 draggy i made 20psi. On race fuel. With boost leaks galore and wgdc going crazy!! going to redo again.

[PepMo]

Nice! That's a full second faster than my best time! I'm glad to hear someone broke into the 11s. I did 12.4s when I was making 15 psi at 6K and tapering to 13 psi by redline.

[ziekxq]

He is not F10 though :P he a 6er.

[BimmerHausPerformance]

Originally Posted by PepMo

Nice! That's a full second faster than my best time! I'm glad to hear someone broke into the 11s. I did 12.4s when I was making 15 psi at 6K and tapering to 13 psi by redline.

Wow, then you should be where showtime is at then!

[PepMo]

I don't know. I have not timed the 1/4 mile in awhile. Seems too abusive to the tranny. I will run it again once my tune is done. I'm asking tuner to give me 22-23 psi from 3500-6800 if possible. He likes to see a smooth progressive boost curve. I said damn that - just let me have it! lol

[Bmwdoubles_]

With my HOD, AZ inlet leaking, and custom intake making 22 psi all the way up top but 100 wgdc.

Fixed the leak by switching to FTP inlet and put on a semi stock intake now making 20 all the way up top, but still 100 wgdc.

No taper in either scenario.

Going to readjust the wastegate with the cat off and see if i can fix this 100 wgdc.

[ziekxq]

Originally Posted by Bmwdoubles_

With my HOD, AZ inlet leaking, and custom intake making 22 psi all the way up top but 100 wgdc.

Fixed the leak by switching to FTP inlet and put on a semi stock intake now making 20 all the way up top, but still 100 wgdc.

No taper in either scenario.

Going to readjust the wastegate with the cat off and see if i can fix this 100 wgdc.

I set mine to 6.5 for vacuum.

[PepMo]

Originally Posted by Bmwdoubles_

With my HOD, AZ inlet leaking, and custom intake making 22 psi all the way up top but 100 wgdc.

Fixed the leak by switching to FTP inlet and put on a semi stock intake now making 20 all the way up top, but still 100 wgdc.

No taper in either scenario.

Going to readjust the wastegate with the cat off and see if i can fix this 100 wgdc.

I doubt that adjusting the wastegate will do anything for making more boost or lower WGDC. I've adjusted mine many times. I had it at 9" one time and it could not make more than 5 psi or something. When it was set to 5", it was overboosting on part throttle and causing drivetrain malfunction code. Going from catted to catless does help the turbo spool up faster and it feels like it made more peak power.

I think in this case size does matter. The .3" larger AZ inlet compared to the FTP helps make more boost up top. So it seems between each inlet, there is a max of about 3 psi difference. Maybe if Pure bored out the turbo intake a little bigger (1-2mm), we can then make 25 psi.

Is the leaking inlet causing drive-ability issues? Maybe your tuner can tune out the mass air flow issue? What about cars that just have a filter directly over the turbo inlet and no intake pipes and maf sensors?

[Bmwdoubles_]

Yeah I've solved my leaks and still have 100 wgdc. Going to try an OTS map and see if the issue still occurs. Changed the solenoid, vacuum hoses, every seal, adjusted WG, pressure and smoke tested it and still have 100 wgdc.

If the OTS gives me a different WG value then yeah, David will have to make adjustments.

Here's AZ DShoup tune, stock intake w/open air filter

https://datazap.me/u/bmwdoubles/fixe...&data=4-16

Here's FTP DShoup tune, stock intake w/open air filter

https://datazap.me/u/bmwdoubles/ftp-...g=0&data=3

I'll post back with a FTP and OTS tune:

https://datazap.me/u/bmwdoubles/mhd-...&data=3-14

Damn these OTS tunes are weak.

Just spoke with DShoup. Testing the possible fix now.

[$howtime456]

Originally Posted by ziekxq

I set mine to 6.5 for vacuum.

same here

[$howtime456]

Originally Posted by BrowBMW

Wow, then you should be where showtime is at then!

keep in mind im running VP IMPORT which is way different than running e85.

[Bmwdoubles_]

This will add 10whp to my reverse

[$howtime456]

you dirty dog lol

[ziekxq]

Originally Posted by Bmwdoubles_

This will add 10whp to my reverse

Where did you buy these?

[Bmwdoubles_]

Originally Posted by ziekxq

Where did you buy these?

Ebay but, I got the recommended seller from this forum. Took a chance and 30 dollars later it's look awesome and no errors.

https://www.ebay.com/itm/181742634599

[ziekxq]

Any errors?

[PepMo]

Originally Posted by Bmwdoubles_

Yeah I've solved my leaks and still have 100 wgdc. Going to try an OTS map and see if the issue still occurs. Changed the solenoid, vacuum hoses, every seal, adjusted WG, pressure and smoke tested it and still have 100 wgdc.

If the OTS gives me a different WG value then yeah, David will have to make adjustments.

Here's AZ DShoup tune, stock intake w/open air filter

https://datazap.me/u/bmwdoubles/fixe...og=0&data=4-16

Here's FTP DShoup tune, stock intake w/open air filter

https://datazap.me/u/bmwdoubles/ftp-...s?log=0&data=3

I'll post back with a FTP and OTS tune:

https://datazap.me/u/bmwdoubles/mhd-...og=0&data=3-14

Damn these OTS tunes are weak.

Just spoke with DShoup. Testing the possible fix now.

Your log with AZ inlet looks good. Are you holding 21 psi all the way to redline? I can't believe you are only making 430 whp with 21+ psi? Why is your boost taking to long to build below 4K rpm? I don't think anything is wrong with having 100% WGDC. Don't that just means that it is more efficient? The wastegate is completely closed when you are trying to build boost instead of only being partially closed and bleeding off exhaust gases.

[ziekxq]

Originally Posted by PepMo

Your log with AZ inlet looks good. Are you holding 21 psi all the way to redline? I can't believe you are only making 430 whp with 21+ psi? Why is your boost taking to long to build below 4K rpm? I don't think anything is wrong with having 100% WGDC. Don't that just means that it is more efficient? The wastegate is completely closed when you are trying to build boost instead of only being partially closed and bleeding off exhaust gases.

100 wgdc means your turbo is running out of breath and has to work extra hard to make boost.

[Bmwdoubles_]

Originally Posted by PepMo

Your log with AZ inlet looks good. Are you holding 21 psi all the way to redline? I can't believe you are only making 430 whp with 21+ psi? Why is your boost taking to long to build below 4K rpm? I don't think anything is wrong with having 100% WGDC. Don't that just means that it is more efficient? The wastegate is completely closed when you are trying to build boost instead of only being partially closed and bleeding off exhaust gases.

It holds 21.9 to redline with AZ's inlet, but that 100 wgdc would be ok if I was making 500whp. 420whp is nice but 100 WG maxes me out so I switched to FTP to see if the unmetered air was my problem.

Turns out that didn't entirely fix the issue and now I max out around 20 psi to redline. So in that, AZ inlet is better inlet. I haven't put my custom intake back on which yielded me 50 more tq.

The only thing I haven't refreshed is the wastegate itself. DShoup mentioned the diaphragm in the pneumatic wastegate might be getting weak.

Anyone know where to get an OEM wastegate actuator replacement?I looked on FCP but maybe not hard enough. I see Turbo smart has a replacement but I've heard the rod arm is too short.

The lag up to 3700 before full boost was due to the unmetered leak and throwing of the MAF reading.