I should be getting the turbo anytime this week. I was told by my tuner that there is too much preload on the wastegate from FP and that I need to watch some video on FP's site and adjust it to 2 1/2 turns before coming..

Can anyone shed light on this? I don't want to run to much boost just bolting it up..... What was the boost initially for your fp green guys that didn't adjusted the preload from getting it from FP?

 

With the 18 psi actuator, you will run a 25psi spike, tapering to a 23psi boost level by redline. there was 4 turns of preload on mine from FP, i changed it around some, and i found that i like 4 turns of preload the best.

Granted, my supporting mods warrant me running this boost level.

 

I found the videos on fp's site.

I want to run the lowest so I have to have the zero preload for 17psi..... according to their site......... then I can let my boost controller (EBC) do the rest.

 

since i have a ebc, can't i just leave it at zero preload?

 

I just stopped using the FP one and put the stock one back on. Got mine for sale if anyone wants it.

 

i dont know a whole lot about the green but im running a 20g-9LT on my 05 and ive upgraded the actuator and am running about 23psi on it and im very pleased. ive seen good numbers outta the fp turbos

 

^ thats a green btw... 20G-9LT.

 

Dont' think you have to worry about adjusting the WGA. Don't you want to run 23-25psi with the GREEN on pump? Why do you want to turn it down. It's that the whole point of the upgraded WGA?

J

 

I have the FP actuator on my stock turbo with a BR O2. with the boost controller turned all the way down I hold a steady 23 psi. I have hit 24 in freezing temps in 4th gear a couple of times. Also they were never just a spike. It hits 22 rises to 23 then falls back to 22 til about 7K then it falls to 21.

 

+1 why would you not want to run 23 psi

 

fp actuator on my green runs a flat 1.4bar/20psi without any adjustment. make sure you don't have any exhaust restrictions that would increase back pressure and give you a spike at spring pressure.

 

I run 23 psi...not more without meth.

Using the 18psi WGA caused that boost hump that everyone knows so well (25 psi peak)and boost creep in my case.

From what I understand we don't need a harder sprung actuator until around 25psi or so.

 

So, I take it that your Green is coming with the Forced Performance HD actuator. Is this correct? If indeed you have the FP HD actuator, the you'll have a hard time getting down to 17 PSI, as it is an 18 PSI minimum actuator.

I think that anytime you get a new turbo with an integral WG, supposedly "preset" on the bench, by the builder, you should adjust the actuator rod to its loosest setting before installing the turbo. Adjust your EBC to its absolute lowest setting and then once the turbo is installed, proceed to shorten the actuator rod to adjust preload by one turn at a time to whatever PSI you wish.

 

Well, I'm finished...

I must say it was a ****...

Main problem I had was the damn o2 sensor would not come off that damn o2 housing...... spend 2 hrs going to different places trying to get it off, ALL CLOSED!!

Finally, I said the hell with it and bought some pb blaster, borrowed a friends torch and heated that o2 housing up good... then I sprayed the pb blaster on it and it finally came off.. Can't use it too much since it started to get somewhat stripped.

I went with a PPI Megan /swaintech housing and had to switch out the o2 sensor.

Only other problem was the damn upper oil return bolts. should of put it on before putting the turbo on the car.. oh well, i just didn't know how much oil i would lose if I removed the return off the pan.

After being done the only issues I have is a lot of burn off from the manifold because I WD-40 the hell out of the bolts to help them get off, sore back and a busted up thumb.. (someone torque the hell out of my spring bolts on the downpipe.

The wga is the HP one. It is set at 0 preload. I drove home on my ebc at the lowest (low setting),, I got up to around 14psi, but i was a little scared to go full throttle to see where 0 preload is actually at.......

I am going to wait for a buddy to get back from out of town before I do anything dumb...

I do feel it spools quicker, and louder, but it could be my imagination..

Now, I just gotta get my stock turbo wrapped and boxed.. cuz I'm selling it


Thanks for all the help.

 

What PSI will you be setting peak boost to? If you'll be peaking at 21#, then 18#'s of preload will be fine. Of course, with the FP HD actuator you can't set preload lower than 18#, anyway(supposedly).

Each car and each combo is different, so I always start from square one when installing a new turbo, just to be on the safe side. Adjust the adjustable actuator rod to its loosest setting and set your EBC to its absolute lowest boost setting.

Take your car for a WOT run in 4th and note boost level. From that initial reading adjust the length of the actuator rod accordingly. Shorten the rod to increase preload. But do it one turn at a time and then retest to confirm boost level. Ideally you want preload to be about 2-3 PSI lower than your peak boost level(spike).