[HowTo] Wastegate Actuator Arm Adjustment - Page 3 - Hyundai Genesis Forum
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post #21 of 27 Old 08-10-2010, 07:52 PM
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Quote:
Originally Posted by Red Raspberry View Post
I did mine and the first time went two full tuns. This was too much as the ECM would try to control the extra boost and it would be jerky.
One and a half turns is great. Especially in the lower gears where the rpms rise so fast the ECM cannot compensate fast enough.

The paint marks are on both sides of the nut so it is still easy to keep looking "stock".
Most likely the stock BOV couldnt handle the pressure you were giving it and realaseing the pressure, i dont think the stock bov is able to hold any more boost than what the stock levels are at. That is assuming that you still have a stock bov.
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post #22 of 27 Old 08-10-2010, 10:41 PM
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This will not increase the boost over the OEM setting. That is determined by the ECU using the MAP sensor and the boost solenoid. It will narrow the band on what is out putted by the ECU.
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post #23 of 27 Old 08-11-2010, 05:25 AM
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I started with 1.5 turns on mine & bumped it up to 2 turns this past weekend with no problems arrising.

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post #24 of 27 Old 08-11-2010, 05:30 AM
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Ok yes this is true but increasing the spring tension on the wastegate makes it hold more boost overall and where it used to dump early into the exhaust now it holds longer causing a spike in boost which is most likely increasing the level. Its almost like manualy overriding the solenoid.
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post #25 of 27 Old 09-14-2010, 09:28 PM
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Anyone take some data logs yet? What, if any, spikes are you seeing and at how many turns?

I did two turns but will probably turn it back down to one turn until I get a boost gauge.
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post #26 of 27 Old 09-15-2010, 05:33 AM
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Quote:
Originally Posted by Ben.... View Post
Anyone take some data logs yet? What, if any, spikes are you seeing and at how many turns?

I did two turns but will probably turn it back down to one turn until I get a boost gauge.
I returned mine to its original position from 2 turns to get a purely stock base line pull a couple of weeks ago. My car is down right now & I have alot of performance mods planned for the next couple of months. I will be replacing the stock WG with an AGP internal WG during these mods, so will not be able to give feedback other than what I had mentioned earlier from my butt dyno.

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post #27 of 27 Old 02-09-2015, 08:59 PM
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Quote:
Originally Posted by GrimmSpeed View Post
So in our never ending quest to find free mods, Hyundai has yet again kicked butt and deciced to give us an adjustable wastegate actuator. What this does is allow us to change the preload on the wastegate itself, which will allow the car to hold more boost. I was a bit doubtful that it would work on our cars because of the more sophisticated ECUs...i was worried it would still do whatever it needed to do to maintain target boost and thus net no gain. So far so good though, car immediately held more boost and gained torque. Unfortunately the dyno guys didnt have the boost sensor hooked up so we could see the actual before and after psi difference, but the dyno definitely speaks. There is definitely a spike in there but i think that is just from us not resetting the ECU and not giving the car anytime to learn. Hopefully once it learns it will smooth it out.


On to the HowTo

1. Remove Turbo heat shield (3) 10mm Bolts
2. Loosen the 10mm Nut that locks the end of the wastegate actuator arm. Back it up to about the end of the threads.
3. Take off the "C-Clip" with a pliers. Be careful and this will like to fly off while you are taking it off and you dont want to lose this.
4. Lift the "swivel bracket" off of the wastegate flapper door bracket. This is the part that we will be turning to shorten the overall length of the wastegate actuator arm.
5. Turn the "swivel bracket" clockwise, as if you were sitting behind the turbo looking at the front of the car. We turned it 2.5 complete turns but i would suggest turning 1.5 times or so and see how the car responds.
6. Place "Swivel bracket" back on wastegate flapper door bracket.
7. Replace "C-Clip".
8. Tighten 10mm Nut.
9. Replace turbo heat sheild (3) 10mm Bolts.





And on to the results. This is OEM vs. OEM w/ wastegate arm adjustment. Literally taken 10 minutes apart.



Justin
Hi GrimmSpeed, I need a little favor. I did this mod but kind of messed up and I turned it several ways and maybe to many turns one way or another. Now I belive that my turbo is holding the boost and not releasing it. I would like to correct the actuator and would like to see if you could please measure the length of the actuator and please reply as soon as possible thank your very much, it would be greatly appreciated!😄
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