|
|
|
|
Thread Tools | Display Modes |
10-22-2005, 01:30 PM | #1 |
Scooby Specialist
Member#: 79498
Join Date: Jan 2005
Chapter/Region:
SWIC
Location: Disdain, NV
Vehicle:2020 XV |
Wastegate actuator adjustment clarification/warning
This is for AP users that aren't quite hitting target boost.
I was hitting 14.0-14.1psi regularly with my Cobb Stg. 1 set up so I decided to tighten up the wastegate actuator a bit. There's instructions and photos elsewhere, it seems like "a turn" is the general opinion on where to start. I gave it what I interpreted "a turn" to be, a 360 degree rotation, and my boost went up almost 2psi to 16.0!! So just as a warning and clarification, try a "half turn" or 180 degree rotation, to begin with if you're just under boost targets. Hopefully that'll be all it takes and it'll prevent you from having to remove your heat shield twice like I did. I haven't test driven yet with the half turn yet, but I'll edit and update tomorrow. But if one complete turn give 2 psi, one "should" or might just give me 1psi up to 15.0-15.1 which is within the 14.7 +/- .5psi target.
* Registered users of the site do not see these ads.
|
10-22-2005, 01:51 PM | #2 |
Scooby Newbie
Member#: 88205
Join Date: May 2005
Chapter/Region:
SCIC
Location: SoCal: The OC
Vehicle:2005 Legacy 2.5GT OBP |
from my experience you should reset the ecu everytime you change that. You will find that if you do that every time that the adjustment is way less sensitive.
|
10-22-2005, 02:08 PM | #3 |
Scooby Specialist
Member#: 56468
Join Date: Mar 2004
Chapter/Region:
NWIC
Location: Seattle, WA
Vehicle:04 Improved STI Dirty White |
Every turbo is different in this respect. I'd be very careful using something as crude as spring tension to control boost. Re-setting the ECU may help the boost contorl solenoid "learn" to control boost, but if you over do it, and spring tension is too high, you'll end up with uncontrolled boost.
Another question to ask is: has Cobb tuned in this region of the fuel map? What's the max boost they tuned for? |
10-22-2005, 06:04 PM | #4 | |
Scooby Specialist
Member#: 79498
Join Date: Jan 2005
Chapter/Region:
SWIC
Location: Disdain, NV
Vehicle:2020 XV |
Quote:
I didn't reset it, mistake on my part, going testing in a while, after a reset, lol. Still, going up 2psi is a bit much, probably just a misunderstanding of previous posts in what is meant by "a turn." Edited to add: After reseting the ECU with the AP, cruising down the highway tonight (~60F) 2500 rpm in 5th gear, hit the gas, boost was at 15.1psi by 3000 rpm. One 180 degree turn of the wastegate actuator did the trick. Mods: Cobb AP Stg 1 91 octane (ver 1.30) Realtime map over same basemap. Samco TB hose STi intercooler Last edited by richde; 10-22-2005 at 11:58 PM. Reason: results after testing |
|
10-23-2005, 01:01 AM | #5 | |
*** Banned ***
Member#: 58477
Join Date: Mar 2004
Chapter/Region:
MAIC
Location: NoVA
Vehicle:. Member #1 of the witty MS Crew |
Quote:
|
|
10-23-2005, 03:55 AM | #6 | |
Scooby Specialist
Member#: 79498
Join Date: Jan 2005
Chapter/Region:
SWIC
Location: Disdain, NV
Vehicle:2020 XV |
Quote:
|
|
10-23-2005, 10:19 AM | #7 |
*** Banned ***
Member#: 58477
Join Date: Mar 2004
Chapter/Region:
MAIC
Location: NoVA
Vehicle:. Member #1 of the witty MS Crew |
thanks!
|
10-24-2005, 12:21 PM | #8 |
Scooby Specialist
Member#: 3803
Join Date: Jan 2001
Chapter/Region:
MWSOC
Location: SouthEast Michigan
Vehicle:07 Mustang GT Ford Crappy Paint White |
You might have been able to leave it at two (180) turns, as the ECU would have adapted to it and brought the boost down. either way, glad to see it worked.
Tom |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Wastegate actuator arm adjustment | Alan l. | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 297 | 09-12-2014 09:14 AM |
Partial throttle - Wastegate Actuator Adjustment | sanremo_russ | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 1 | 04-22-2007 04:37 PM |
FP16G wastegate actuator adjustment | daveyboy | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 3 | 01-18-2007 01:51 PM |
Jet Coat Warning + Help locating a wastegate actuator | boostation | Normally Aspirated with bolt-on Forced Induction Powertrain | 8 | 08-15-2006 04:42 PM |
15psi adjustable wastegate actuator | Big Turkey | Private 'For Sale' Classifieds | 0 | 03-28-2004 09:49 PM |