What's better? Adjustable wastegate rod or manual boost control?

[84gnguy]

Looking for opinions..what is better or do you need both?

 

[Quick6'n'-K.C.]

I would trim off some of your stock wastegate rod to make it adjustable, and also run a ball and spring style adjustable bleeder.

The car in my signature was running consistant 12.00's with the stock nonadjustable wastegate and the RJC bleeder turned in all the way.

The maximum boost i could get when it was 75° out was around 20psi, and 22psi if it was 40° outside.

Once i cut my stock wastegate rod, and adjusted it in about 4-5 turns more than the stock setting, i was able to get the boost to 23psi when it was about 55° out.
Then it started running consistant 11.80s with just the wastegate rod and a heated 02 sensor, my ac delco had about 30 gallons of 110 ran thru it and was acting sluggish.

So, yes, do both and you wont look back.
I run that RJC style bleeder,and i have zero creep in every single gear.
They really work!
BW

 

[rodman99999]

A second to KC's response. Both should be used. Adjust the wastegate actuator so the rod barely has any tension on it. The RJC controller gave me almost instant spool and no creep(w/a TA-49 and the wastegate hole ported).

 

[turbows6]

This is just a little of my own experience, but when I first got my TTA it didn't have any tension on the actuator rod, and it wouldn't spool up right. The boost threshold was really high, and it would want to stumble before it would spool up because it got too rich because it wasn't spooling correctly. After thinking about it, It seemed logical that the pressure in the headers was pushing the wastegate puck open before it was supposed to. I feel that there should be enough tension on the actuator rod to keep the puck shut untill you reach the boost level you are running, but not much if any more. I think the good thing about the RJC boost controller is the ability to keep the wastegate closed untill you get to your desired boost level. I guess what I'm trying to say is that you need some tension on the actuator rod, but I wouln't probably use the rod as your only form of boost controll. I think you need to have both the rod and the boost controller properly adjusted for the best results.

 

[Quiky One]

Do the RJC's work with a HD rod? Do they eliminate creep on those rods?

Jason

 

[BlackBandit]

Do the RJC's work with a HD rod? Do they eliminate creep on those rods?

Jason

A MBC should work with a HD wastegate actuator. It will just have a higher minimum setting because of the HD actuators spring. As a side note I ran a MBC from a place called dawes devices for several years before RJC introduced the same style and I ran as high as 26 psi with lots of adjustability left. Don't get me wrong, I'd rather buy from a buick vendor and if RJC had one at the time I would have bought from them. Maybe RJC should look into using a little bit stiffer spring though as lot's of guys are running 20+ psi with meth now days. Of course, you could probably just stretch yours out a little to get some more adjustability.

Also, unless you currently have a WG rod that's adjustable and screwed in allot a MBC isn't going to help with boost creep. For that you would need to port the WG hole. HTH james

 

[John Wilde]

So, yes, do both and you wont look back.
I run that RJC style bleeder,and i have zero creep in every single gear.
They really work!
BW

Bryan,

Can you set this up for remote adjustment?

 

[BlackBandit]

I'm not bryan but I can answer your question. Yes. If you set the MBC to your minimun desired boost setting you can get the spool advantage of it and then you can use a bleeder inside the car to adjust up from there. It's a nice, simple, and very reliable setup. HTH james

 

[Lee_Burough]

....snip....The car in my signature was running consistant 12.00's with the stock nonadjustable wastegate and the RJC bleeder turned in all the way....
BW

There is your answer, from a reliable source.

 

[Quick6'n'-K.C.]

Bryan,

Can you set this up for remote adjustment?

Boy i dunno, you would have to run very small diameter hose before you even tried putting it in the cabin.
Back in the day, i did it on a turbo laser and the time it took to get back to the wastegate the boost would spike pretty bad, but it wasnt a ball and spring design.

What setup are you trying to run it in?

BW