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Old 04-24-2019, 01:00 PM   #2826
subydude
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Why aren't you commanding higher WGDC down low to bring boost up quicker?
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Old 04-24-2019, 01:21 PM   #2827
yamahaSHO
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I've been asked that in this thread already... Because it doesn't help on my car.


It's an .85 hot side on a 6758 at 9k ft ASL.

Below is 1,000 ft ASL:


Last edited by yamahaSHO; 04-24-2019 at 01:41 PM.
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Old 04-24-2019, 02:25 PM   #2828
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Perrin sells an oil line with a banjo fitting on the block side.

They also have restrictors.....
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Old 04-24-2019, 03:42 PM   #2829
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?????
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Old 05-11-2019, 02:17 PM   #2830
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For those tuners out there, what kind of AVCS are you using? I have mine set at Cobb's stage 2 values right now, but am interested in what others have done
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Old 05-11-2019, 03:20 PM   #2831
yamahaSHO
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What turbo/hot side are you using?
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Old 05-11-2019, 03:25 PM   #2832
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Quote:
Originally Posted by yamahaSHO View Post
What turbo/hot side are you using?
EFR 7163 with the 0.85 ar. Iíve been reading up on how AVCS is measured in crank degrees, not cam degrees, and that we have about 25 cam degrees to play with. Cobbís stage 2 map doesnít go anywhere above 25 crank degrees. Iím sure this has to do with valve to piston contact
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Old 05-11-2019, 03:44 PM   #2833
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You should not be able to advance it to a point of contact. I ramp mine in harder than 25 and once the turbo is making boost, I slowly taper it down to nothing. I can't recall where I have it goes zero without my map in front of me.
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Old 05-11-2019, 04:15 PM   #2834
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Quote:
Originally Posted by yamahaSHO View Post
You should not be able to advance it to a point of contact. I ramp mine in harder than 25 and once the turbo is making boost, I slowly taper it down to nothing. I can't recall where I have it goes zero without my map in front of me.
Something along these lines but more aggressive?
https://i.imgur.com/N7HaDZG.png
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Old 05-14-2019, 06:08 PM   #2835
yamahaSHO
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Anyone here try adding a restrictor? I've made my AOS/PCV far more effective and I still have a hint of oil smell out the exhaust after a hard run. I know this was discussed earlier, but don't remember where it went.
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Old 05-14-2019, 06:12 PM   #2836
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I have one in mine, at the turbo. Perrin highly suggests two of their restrictors - one at the block end, and one at the turbo end.
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Old 05-14-2019, 06:36 PM   #2837
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I've been meaning to see how much oil pressure I have at the turbo. I have a mechanical oil pressure gauge and just need a 4AN to 4AN fitting with a 1/8 NPT hole for the gauge.
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Old 05-14-2019, 07:12 PM   #2838
yamahaSHO
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Got a link for the Perrin recommendation?
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Old 05-14-2019, 09:59 PM   #2839
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Perrin.com

Call and talk to them
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Old 05-14-2019, 10:08 PM   #2840
yamahaSHO
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Eh... I'll just continue with my plan to install a separate restrictor.
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Old 05-15-2019, 01:48 PM   #2841
yamahaSHO
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I just ordered two different in-line sizes and will try them. It'd be nice to no longer have any faint, burnt oil smells again.

I also added one more mm of preload on my 2-port actuator (+8mm total) and put my AOS venting to test. The car is pretty fun, even at high altitude.


Last edited by yamahaSHO; 05-15-2019 at 02:30 PM.
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Old 05-17-2019, 08:50 PM   #2842
yamahaSHO
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Got a 1.6mm restrictor in now... Now I need to go see what it does.




EDIT: That seems to have worked on the first drive. I will continue to monitor.

Last edited by yamahaSHO; 05-17-2019 at 11:15 PM.
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Old 06-02-2019, 11:11 PM   #2843
yamahaSHO
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Finally made a drag strip pass with this 6758, running 23-24 PSI. DA for Bandimere was 8,700 ft. Waddlz also came out with his 7163, however, I am still waiting to get it on a dyno to turn it up, so the cars were pretty close. We both really came to do the roll racing portion, but made a few passes from a dig. I think we only really went after a decent time on the last pass, where I got a 12.4 @ 111 and he got a 12.9 @109.

I might turn up the boost and go on a cooler night and see if I can't pull off an 11 second pass.

Here are the 2 passes Waddlz and I made next to each other. He goofed on the first pass and I had launch control set too low and missed 5th gear. The second pass was decent for both of us.


I also did some roll racing against a 500whp SHO that I tune.


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Old 06-03-2019, 12:33 PM   #2844
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man that was fun.
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Old 06-04-2019, 01:14 PM   #2845
yamahaSHO
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I will be purchasing a 4-port EBCS. I am out of WGDC when slamming through gears.

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Old 06-04-2019, 01:36 PM   #2846
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That SHO is awesome! We had that style Taurus growing up. My step dad talked about always wishing it was a SHO, LOL!

Looks like your only hitting your target boost in 5th and all gears are 100% wgdc LOL!
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Old 06-04-2019, 02:12 PM   #2847
yamahaSHO
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I've got it limited at 95%. If I do a single 4th gear pull, it can ramp up and follow target, but once you start running through gears, it just can't keep up. 5th gear on this year STi is such a huge gap from 4th, so the load on the motor goes way up!

That SHO has a stock motor with a Vortech S-trim and E85. I gained 25 mph in the back half, he gained 30 mph! I just had him swap from ID1000's to ID1300's, so I'm hoping he'll upgrade to a blower from this generation and maybe shoot for 600whp.
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Old 06-04-2019, 04:31 PM   #2848
Scuby04STi
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Quote:
Originally Posted by yamahaSHO View Post
I will be purchasing a 4-port EBCS. I am out of WGDC when slamming through gears.

What is the throttle position in reference to this chart?
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Old 06-04-2019, 04:33 PM   #2849
yamahaSHO
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It was a drag race, so lots of WOT.

Low launch control, and WOT through 5th gear (hit the rev limiter in 4th and missed 5th gear).
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Old 06-04-2019, 05:29 PM   #2850
Scuby04STi
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Quote:
Originally Posted by yamahaSHO View Post
It was a drag race, so lots of WOT.

Low launch control, and WOT through 5th gear (hit the rev limiter in 4th and missed 5th gear).
But was it actually at 100% on the tps? I know most people have a hard time actually keeping the right foot pegged to the floor even on a drag race the whole time (shifting to be specific) I think its a mental thing. If there was any slight lift that would be something to try and avoid if your goal is to keep the car in boost the whole run.
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