Stage 3 only holds 14 psi at redline, need help

The important mods are

Stage3 W/ toys new
BFMIC
NGK Iridiums .035 1 step colder than stock
AGP s3 WGA
Maxxfab 3" o2, exhaust
scangauge, uego

My S3 kit on PCM controlled boost won't let me hold over 14-15 psi at redline. Please help me solve this problem, Heres what I've done so far.

I installed stage 3 with toys and the original S3 WGA, it ran great only spiking 21 falling to 18-19 at redline with the WGA at the lowest setting.

Then I installed turbo toys and an AGP S3 WGA and it would spike 20 falling to 14. So I tightened the AGP S3 WGA and it performed the same. Boost verified with a scangauge, and yes dab 3.

So next I put the original S3 WGA in and tightened so only a few threads are showing, same results.

So I reset my PCM overnight and boost leak tested all the way to 30 psi. Then I tried again and got the same results.

It still spikes 20 then falls to 14 at redline. This is a completely new S3 kit. I've been recording knock and get very little, even if I use racegas it doesn't effect boost levels, I wouldn't expect that to raise boost I'm just saying it's not pulling boost due to knock.

I did a pull recording WGA open percentage with the original S3 WGA on and it stayed right around 60% open the whole time from spool up to redline.

I recorded AFRs + boost in another pull and it runs lean during spool up and when it hits 20 psi it starts richening up from 11s all the way down to 9s by the time it's at 14 psi. Is that normal?

This was a 2nd to 3rd gear pull showing what the boost and AFRs does. AFRs are on top and boost on bottom

http://s3.photobucket.com/albums/y91/7055/?action=view&current=leaktest002.flv

 

1. Re-check your toys wiring is installed correctly.

2. Check the gray wire on the toys harness at the pcm, if this is not connected you will see the same boost in no matter what DAB your in.

3. Check the toys fuses to make sure they are there and check them to see if any are blown.

4. When you installed the toys you should have reset the pcm and drove in DAB 0 doing pulls on and off till the PCM relearned its parameters. Then you can test the other DABs.

5. Your limited on boost in 1st and 2nd gear.

6. Also the AGP wga takes a lot of turns just to increase boost. You just get 1-2psi increments with lots of turning.

 

check for any leaks.

 

boosting 20 is weak on a S3

 

I'll try this and get back when I get a chance to work on my car

....

 

How many fuses should there be in the turbo toys fuse box? Two or three?

 

3... one for DAB, one for the Sprayers, one for the HOM.

 

Are you positive about that? I just took a closer looks at the wires and realized I think theres only supposed to be two, damn thought that might be my problem for a second.

 

There's only two fuses that should be in there a 5 and 15. 5 being the middle fuse.

My mistake, I'm not all here today dealing with some bad sinus pressure plus allergies. My head feels like its about to explode!

Check the wires at the pcm... when DAB wasn't working on my wife's S3 car after my friend I installed an SAFC Neo, it was because we left the grey wire on the toys harness unhooked.

 

I did that, all wires at the PCM seem to make connection, and both fuses are good.

 

If I remove both fuses the car should perform like the toys were never installed right? I'll take off my intake and both fuses and do a run tommorow and see what happens. Intake might be collapsing in.

 

What intake are you running? The only one I hear about collapsing is the K&N Typhoon. How man ycounts of knock are you getting on your scan gauge? Its running lean when its spoolin maybe an exhaust leak near the turbo?
I hear a lot of people going back to the S3 WGA.. Maybe the computer hasn't realized the stronger spring in the AGP WGA and its lowering boost to redline? What BOV are you running?

 

3" silicon elbow that necks down with a rubber coupler to the stock intake.

 

My wife's car is doing great with the S3 AGP Wga on pcm control boost and using the DAB function. Its better then stock. I would try the stock one first if I went with Diablosport.

If you pull the fuses then the toys shouldn't work.

Have you contacted AGP to see what they say about the wga? It could be a faulty unit. You can send it back to them and have them inspect it.

Check the toys bezel, the wires/connections behind it.

 

I don't have a diablosport and I've already ruled out the WGA.

My thinking is if I pull all the fuses for the toys it'll be like they were never hooked up, therefore if the car still doesn't run right I can rule out the possibility of something wrong with the TT wiring.

 

Spiked 25 falling to 20 with the intake off and the AGP unit on, it's better now but still dropping off 5 psi, hmm confusing.

Will put the intake back on again tommorow and see if it falls to like 14 again.

Maybe I have solved the problem (it was the intake) and knock was causing the boost to be pulled back on that run. I think I really should have put more torco in on that run, unfortuantely that was like the only time I recorded RPM and boost instead of knock.

 

Its going to drop off. Not all the way to 14psi if you spike 25 but if you spike 25 it will drop off.

DAB 2 and 3 on my wifes car is 26.5psi, bringing it to 28psi soon. It drops off, I don't recall to what but it doesn't stay at 26.5psi throughout the band.

DAB 0 is about 18-19 on her car and that drops around to 16psi.
DAB 1 is about 21-23 don't recall what it drops to.
DAB 2 and 3 is around 26.5 and don't recall what it drops to.

We see knock on her car on a certain range of rpms but nothing drastic .5-1.5 on pump gas. Although I have seen almost up to 5 and had to retune her car. Each DAB shows different knock readings. Cams, bigger injectors, etc plays roles on her car.

Hopefully its the intake, the elbow collapsing. Keep us posted!

 

All you need is some gutter guard over the turbo and you are golden! lol

 

With the intake it spikes 25 and falls to 18, without it seems to spike 25 fall to 20 and pulls harder. next to zero knock.

 

Yes but I don't think it should be dropping off as much as mine has been. I think the next step is to take if off PCM controlled boost.