low boost

[denobd]

hello everyone,

trying to see if anyone has any insite as what could cause a issue im having. so while i was on stock turbos tuner was asking if they were EOL. because he saw something wrong while tuning. i didnt feel they were becaise they only had about 76 thousand miles at the time. but hey gave me a reason to get upgraded twins. so fast forward new twins are in with all supporting mods. inlets, outles, PI, flex fuel kit, new index 12, new plugs, new coils, all maintinance done. now when he is trying to increase boost it only goes to 17-18 psi. he even said he increased so much duty cycle i should def be over boosting but its the same. no codes, car feels strong and pulls hard on the boost that it is making. but just wont increase.

anyone ever heard of or had this situation. any help would be greatly appriceated. also attached a log.

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[NoGuru]

Embed the log or upload it to Datazap, it's useless the way you have it attached.
Who is your tuner?

 

[denobd]

Embed the log or upload it to Datazap, it's useless the way you have it attached.
Who is your tuner?

how do i embed it? DIMITRI with bq tunning is my tuner.

 

[NoGuru]

Datalogs

www.spoolstreet.com

Try this

 

[denobd]

Datalogs

www.spoolstreet.com

Try this

log uploaded to log page. i shared with you also not sure if it worked.

 

[RSL]

You can copy BB code and paste in thread after it's uploaded.

 

[denobd]

You can copy BB code and paste in thread after it's uploaded.

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thank you. got it attached to original post.

 

[RSL]

You didn't say what turbos, but if the issue existed on the stock ones and the new ones, it's obviously something that hasn't changed. If you're sure there are no boost leaks and WGs were set properly on the new turbos, I'd look at vacuum lines/canisters and boost control solenoids if they are still the same pre/post upgrades.

 

[denobd]

You didn't say what turbos, but if the issue existed on the stock ones and the new ones, it's obviously something that hasn't changed. If you're sure there are no boost leaks and WGs were set properly on the new turbos, I'd look at vacuum lines/canisters and boost control solenoids if they are still the same pre/post upgrades.

they are VTT GC LITES. but yeah accordning to tunner he seeing the same thing he was seeing on the stock ones. lines and canisteres have been replaced. i was thinking to replace the soilnioids next.

 

[JohnDaviz]

The solenoids probably will be fine.
You should pressure test your system and look for a boost leak. I don´t think that with a WGDC of 76% you should only see 15psi.

But Dimitri should also get your PID running better. Your WGDC is jumping like crazy. I know a few ppl with this and some of them do even feel it during a pull that WGDC is jumping.

 

[denobd]

The solenoids probably will be fine.
You should pressure test your system and look for a boost leak. I don´t think that with a WGDC of 76% you should only see 15psi.

But Dimitri should also get your PID running better. Your WGDC is jumping like crazy. I know a few ppl with this and some of them do even feel it during a pull that WGDC is jumping.

pressure test was the first thing i had done. to make sure there was no leaks.