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userpike
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« Reply #90 on: June 18, 2014, 12:16:06 AM »
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Got myself a forge actuator. Why? |
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carsey
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« Reply #91 on: June 18, 2014, 06:50:31 AM »
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Hold more boost across midrange. They work pretty damn well. Common upgrade for a bit extra is 10psi or 14psi actuator here in the UK.
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nyet
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« Reply #92 on: June 18, 2014, 09:24:08 AM »
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Hold more boost across midrange. They work pretty damn well. Common upgrade for a bit extra is 10psi or 14psi actuator here in the UK.
I don't know of anybody who runs 100% WGDC in midrange, unless they are running turbos not suited for the application. |
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tjwasiak
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« Reply #93 on: June 18, 2014, 09:30:43 AM »
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IMHO uprated actuators are useless if you have electronic boost control!
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littco
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« Reply #94 on: June 18, 2014, 10:20:18 AM »
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IMHO uprated actuators are useless if you have electronic boost control!
How so? Can quite happily hold an maintan most boost profiles with an uprated actuators and electric boost control.. |
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nyet
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« Reply #95 on: June 18, 2014, 10:30:46 AM »
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This thread is filled with so much fail at this point  |
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tjwasiak
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« Reply #96 on: June 18, 2014, 10:32:16 AM »
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But you can maintain same level of boost without uprated actuator if your ECU is properly tuned... And it is much easier to regulate boost if you have stock actuator  |
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ddillenger
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« Reply #97 on: June 18, 2014, 10:35:04 AM »
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This thread is filled with so much fail at this point +1 |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
DDillenger84(at)gmail(dot)com
Email>PM
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littco
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« Reply #98 on: June 18, 2014, 11:26:13 AM »
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But you can maintain same level of boost without uprated actuator if your ECU is properly tuned... And it is much easier to regulate boost if you have stock actuator So when the waste gate is being forced open due to high back pressures and a weak stock actuator how do you maintain boost? No Ecu tuning can over come a physical barrier! |
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tjwasiak
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« Reply #99 on: June 18, 2014, 11:54:46 AM »
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Then you replace your turbocharger with something suitable for boost levels you require.
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carsey
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« Reply #100 on: June 18, 2014, 05:54:15 PM »
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100% DC was to see that the actuator was weak. No different if someone ran a manual boost controller set to 21psi.
The forge one with yellow spring works awesome. Duty cycle right down into the mid 70% on a stock k04 boost map....just needs tweaking to get it how I want it.
Every k03s that has made over 225bhp over here in the UK is running a uprated actuator. One of the leading UK VAG tuners got 267bhp out of a k03s and other setups are regulary making 250bhp with uprated actuators and a good flowing setup. Same with some of the K04 with relentless manifolds and uprated actuators going on cracking 300bhp on a stock turbo.
The OEM actuators springs go so weak over time, they can no longer hold back the pressure flowing across the wastegate so they tend to have high DC% and get blown open at higher RPMs.
Ive put one of the logs of my old AGU k03s setup that ran 250bhp (not on that map variant as we changed load due to a faulty gauge during mapping).
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tjwasiak
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« Reply #101 on: June 18, 2014, 06:04:50 PM »
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First of all - it is not a diesel so power peak @4500 RPM is not normal - it just shows that turbocharger is too small for your application I would like to ask how long will it survive running such software. 9 years ago I had Golf GTI (AUQ engine) which had ~230HP @~5700RPM at the crank with stock K03s running pump fuel. I believe it is highest possible power you can "safely" have from K03s in daily driven car. |
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carsey
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« Reply #102 on: June 18, 2014, 06:53:25 PM »
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Its not a fudged plot. Ill guarantee you 100% that. 1.8T tuning is still jumping leaps and bounds here in the UK. All the big power k03s builds over here boost to 21psi peak and thats it. everything else is down the the hardware and mapping.
Littco on here will back me up 100% on this as he's working 1st hand with the tuners in the UK that are making record figures from OEM turbo applications.
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tjwasiak
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« Reply #103 on: June 18, 2014, 07:09:25 PM »
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Still - it is IMHO useless to have peak power at 4500 RPM in petrol engine. Such a car is a "dyno queen" for me - made only to show numbers, not give fun when driven...
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carsey
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« Reply #104 on: June 19, 2014, 05:39:17 AM »
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Trust me it was fun to drive. Having power nice in the midrange is where the k03s is alive. Pointless trying to make it at 6000rpk when turbo rubbing out of puff.
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