Make a donation

Author Topic: Serious boost help needed  (Read 1195 times)

Offline ROH ECHT

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 113
  • -Receive: 149
  • Posts: 2116
  • K04 PLAY....ZOOM DIS!
Serious boost help needed
« on: June 05, 2013, 03:56:31 am »
For some time my boost is unable to meet specified until around 5k rpm. Adjusting the wastegate actuator does nothing to the boost in the pre 5k rpm region...only changes it thereafter. WGDC looks normal as if all is OK. It drops shortly after specified hits 2.55bar. I have no error codes and never had any to date.

I've been pointed in the direction of a blown W/G actuator diaphragm.
I do not believe it is a dv or charge air leak issue.

In February the boost was identical to this graph only from 5k rpm on, the actual boost is pinned at 2.55 bar to redline.

So,
when I adjust the w/g for more boost it will reach well over 28psi, but only after the 5k mark. As you can see...right now it is slightly below specified b/c I just retarded it to look for a change in the pattern.

I am planning on looking into the w/g actuator diaphragm having a hole in it or not, but IF you have had an identical run around with this issue would you please point in a direction that leads to a destination for me?

K04 PLAY...K04 turbo/S3 INJ. & FMIC/FORGE FMTC, TB hose, & WG actuator/GIAC's H.O. K04 & DSG TUNES/AWE DV/NEUSPEED P-FLO,TURBO OUTLET & TB pipe/AUTOTECH hpfp/BSH Eng.&Trans Mounts/H&R ARB's/Whiteline Performance springs & W.A.L.K./ECS stage-3 BBK/BILSTEIN B8's...ZOOM'DIS...GIAC K04 tune-2007 Volkswagen GTI: 12.823 @ 112.050 MPH__Voting for my Dragtimes link: http://www.dragtimes.com/Volkswagen-GTI-Timeslip-25700.html?r=1

Offline ROH ECHT

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 113
  • -Receive: 149
  • Posts: 2116
  • K04 PLAY....ZOOM DIS!
Re: Serious boost help needed
« Reply #1 on: June 06, 2013, 02:03:44 am »
B'dump ;p
K04 PLAY...K04 turbo/S3 INJ. & FMIC/FORGE FMTC, TB hose, & WG actuator/GIAC's H.O. K04 & DSG TUNES/AWE DV/NEUSPEED P-FLO,TURBO OUTLET & TB pipe/AUTOTECH hpfp/BSH Eng.&Trans Mounts/H&R ARB's/Whiteline Performance springs & W.A.L.K./ECS stage-3 BBK/BILSTEIN B8's...ZOOM'DIS...GIAC K04 tune-2007 Volkswagen GTI: 12.823 @ 112.050 MPH__Voting for my Dragtimes link: http://www.dragtimes.com/Volkswagen-GTI-Timeslip-25700.html?r=1

Offline ROH ECHT

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 113
  • -Receive: 149
  • Posts: 2116
  • K04 PLAY....ZOOM DIS!
Re: Serious boost help needed
« Reply #2 on: June 14, 2013, 07:56:14 am »
Finally...I replaced the hpfp thrust sensor and graphed only a slight difference in boost as well as the lfp portion of the system. So then I replaced the MAP sensor on the throttle pipe and BAM!...Instant boost. I haven't recorded the data yet, but tomorrow I will and I am certain the boost is now coming on quickly and strongly per gage readings...so excited about that. I still have a Forge w/g actuator and spring set on the way ;|...but I'll still use it I guess ;p
Found this posted today...
« Last Edit: June 14, 2013, 08:28:42 am by ROH ECHT »
K04 PLAY...K04 turbo/S3 INJ. & FMIC/FORGE FMTC, TB hose, & WG actuator/GIAC's H.O. K04 & DSG TUNES/AWE DV/NEUSPEED P-FLO,TURBO OUTLET & TB pipe/AUTOTECH hpfp/BSH Eng.&Trans Mounts/H&R ARB's/Whiteline Performance springs & W.A.L.K./ECS stage-3 BBK/BILSTEIN B8's...ZOOM'DIS...GIAC K04 tune-2007 Volkswagen GTI: 12.823 @ 112.050 MPH__Voting for my Dragtimes link: http://www.dragtimes.com/Volkswagen-GTI-Timeslip-25700.html?r=1

Offline ROH ECHT

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 113
  • -Receive: 149
  • Posts: 2116
  • K04 PLAY....ZOOM DIS!
Re: Serious boost help needed
« Reply #3 on: June 14, 2013, 11:56:25 pm »
New data from a NEW MAP sensor replacement looks like this...

Problem solved!
« Last Edit: June 15, 2013, 12:20:39 am by ROH ECHT »
K04 PLAY...K04 turbo/S3 INJ. & FMIC/FORGE FMTC, TB hose, & WG actuator/GIAC's H.O. K04 & DSG TUNES/AWE DV/NEUSPEED P-FLO,TURBO OUTLET & TB pipe/AUTOTECH hpfp/BSH Eng.&Trans Mounts/H&R ARB's/Whiteline Performance springs & W.A.L.K./ECS stage-3 BBK/BILSTEIN B8's...ZOOM'DIS...GIAC K04 tune-2007 Volkswagen GTI: 12.823 @ 112.050 MPH__Voting for my Dragtimes link: http://www.dragtimes.com/Volkswagen-GTI-Timeslip-25700.html?r=1

Offline rich83

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 165
  • -Receive: 802
  • Posts: 13444
    • MK5 Golf GTI
  • My Ride: https://www.mk5golfgti.co.uk/forum/index.php?PHPSESSID=hdt453mpaubtpv613ou2aen985&/topic,19740.0.html
Re: Serious boost help needed
« Reply #4 on: June 15, 2013, 01:27:45 am »
Well that looks MUCH better..... glad you fixed it easily!

Offline ROH ECHT

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 113
  • -Receive: 149
  • Posts: 2116
  • K04 PLAY....ZOOM DIS!
Re: Serious boost help needed
« Reply #5 on: June 15, 2013, 05:25:19 am »
Yes! Much better... :jumpmove:
K04 PLAY...K04 turbo/S3 INJ. & FMIC/FORGE FMTC, TB hose, & WG actuator/GIAC's H.O. K04 & DSG TUNES/AWE DV/NEUSPEED P-FLO,TURBO OUTLET & TB pipe/AUTOTECH hpfp/BSH Eng.&Trans Mounts/H&R ARB's/Whiteline Performance springs & W.A.L.K./ECS stage-3 BBK/BILSTEIN B8's...ZOOM'DIS...GIAC K04 tune-2007 Volkswagen GTI: 12.823 @ 112.050 MPH__Voting for my Dragtimes link: http://www.dragtimes.com/Volkswagen-GTI-Timeslip-25700.html?r=1