Yes your gain should be a LOT more then that look at mine in my sig. Mine was done with a stock Viii turbo. and a stock wg with a forged bov

 

I don't really think the WGA is the problem. There are tons of people running the stock 9 actuator and holding 22-24 lbs to redline. How are you spiking 30 psi and running an equivalent to 93 octane gas? I do agree, there is a lot more hp to be had if he can hold more boost on the top end. What kind of boost control are you using?

 

yup i can hold 23/24 psi @ redline with the stock WGA using 3 port BCS!

30 psi spike on pump is pretty ..wow..

when my car was begin tuned i spiked to 29 psi and no knock, but thats way too much boost for a stock bottom end for my liking.

 

I agree. It all depends on the setup.

I am running a bone stock Evo 8 turbo. I have never touched the actuator. I am running a 30PSI spike that holds 25PSI at 7k. I am using an EMS with the AEM BCS. The main thing that made the difference was getting rid of any boost leaks which included ditching my 1g BOV for a Tial. I can pressurize the system to 32PSI now without any leaks. Once I got the leaks gone then I was able to hold boost much better. Before the Tial, I would fall down to about 22PSI and also couldn't get a spike much more than about 26.5psi.

 

I am using a GM 3 port solenoid, 18psi wga. The upgraded wga will help you hold more boost, and will make the boost fluctuate less throughout the entire rpm range. The stock wga will be very tricky to tune at high boost (ie 30 psi spike), and won't yield consistent results as compared to the 18psi wga, because when it opens, it takes much time to close again due to the low pressure spring (11psi i think).

I spike 30psi, holding 26 to 5700rpm, then slowly tapering to 24 at 7k, abt 23 at 7.5k
It's a bit high for pump gas, but i like to get the most out of my setup...

 

those are nice #'s EE ...
So basically i need to ditch my hallman mbc, check for boost leaks, uprade my bov, possibly get a forge wastegate, and ditch my stock airbox .. then get it back to ams for another tune... That should be it to get me closer to 400whp, right >??
SSLevo.. did you notice a difference from porting your turbo ??

 

MBC to 3 port BCS

check for boost leaks

aribox to intake filter.

then ur good as gold.

 

I'm not really sure since i went from the stock VIII 9.8 turbo to the ported IX turbo, manifold and O2 housing. I noticed a difference but i think it was from the all of the above

We will see i am off to AMS may 7th for a E85 tune as well. I am really wondering if i need to go to the 3 port boost control to hold the boost up top. I don't want to dyno tune the car and find out i can only hold 18-20 to redline. There is really no way to test this since i can't spike it to 30 psi on pump gas. Any advice?

 

looking good. Chris does some amazing work. Hope you enjoy it. I know I do.

 

MBC and ecu controlled boost via GM 3 port solenoid both work great. I used to run the Hallman Rx Pro and could hold the same boost at redline.

To the OP, I suggest the following:

1- Boost leak test
2- Airbox mod or take off the stock air box and replace with an open air filter
3- Check with your tuner how to make your car hold more boost. In case you don't find any boost leak, it's your tuner's job to adjust your boost curve

 

you could always give ams a call, or talk to them about it before they throw it on the dyno

 

you can spike to about 27/28 psi on pump depending on the tuner, then you can see your taper.

 

Cool, thats what i was looking for. People made it sound like the 3 port boost control would hold more boost to redline. I called AMS last night and they also confirmed that the mbc would be fine. Will do a boost leak test tonight and i got all of the T-bolt clamps installed so i should be good to go. I'm getting excited!

 

SSlevo, did you make your trip to AMS ?? What #'s did you hit ??

 

Yeah i did, i'll post the graphs after i get home from work. It made 347/361 on E85. Keep in mind this is on a VIII with the crappy cams and stock intercooler. I put on a LICP and dynod on another dynojet and it did 346/371. I'm pretty confident it has 400/400 in it with cams and intercooler. Ran a 12.1@113 last week