I have really bad boost creep, so bad that the tuner wont tune until we get the problem fixed. He said it is most likely the ebay o2 housing so we are going to put the stock o2 housing back on. I have the IX turbo on my VIII also with the 18psi wastegate. Will that also make it creep? I am only tuning for 20-21 psi at teh moment.

 

So, I´ll take the bait....just how bad is your boost creep? Did you install the IX turbo and the O2 hsg. at the same time? I gather that you have the FP high performance actuator which supposedly won´t allow boost to be adjusted below 18#. Is the FP hotside ported?

 

it goes from 18psi(lowest) to like 22psi at like 5000 rpm he said, yeah i installed both at the same time, I am using the new hallman mbc.

 

The 18# WGA should give you the minimum reading of 18# if there is no tension on the actuator rod whatsoever. If, however, the threaded actuator rod is a bit short, then the base boost will be above 18#.

 

so ur saying it is not the wastegate?? Please tell me it isnt lol, i dont have a stock ix wastegate but I do have my stock o2 housing to put back on.

 

I guess I did not explain myself well enough. It may just be that your wastegate has too much pretension because the adjustable actuator rod is adjusted too short.

There are three main working wastegate components on your 16G turbo. The wastegate as it is generally refered to is composed of: 1) the wastegate solenoid(which in your case is an 18# solenoid). the WG solenoid is that little tin can on the end of the actuator rod and it is bolted via a two bolt bracket onto your compressor housing. 2)the wastegate puck, aka, flapper valve which is the coin shaped valve on a pivoting arm located on your turbine housing(hotside), and 3) The adjustable WG actuator rod which is the long threaded rod which has a turnbuckle on the end secured with a backup nut and held onto the flapper valves´s pivot arm via a c-clip or cotter pin.

Anyway, the base tension on the wastegate solenoid is adjustable by rotating the turnbuckle on the end of the threaded actuator rod. In your case, with the FP 18# actuator, boost cannot be adjusted down below 18#. However, the base boost could concievably be higher than 18#, if the wastegate actuator rod is in fact a bit too short. In which case you could legthen the rod by turning out the turnbuckle a turn or two. It might alleviate the problem and it is worth a try before going though the hassle of removing the O2 housing again.

 

well the wastegate goes to 18psi and stays for a second then creeps upwards towards 21psi+. I juts dont want to drive 3 hours and have him be like o its your wastegate, get it fixed and come back with an oem one. He thinks it is just the hole in the ebay o2 housing is too small thats why it is creeping. I am only worried about teh wastegate issue because I have read on here about guys have those problems with their aftermarket wastegates from fp and forge(I think).

 

No, he must mean that the bypass port("hole") in the hotside is a bit too small to bleed off the exhuast gas flow through the hotside and it is aggravated by the freer flowing O2 housing. The inability of the bypass port to bleed off the exhaust gas flow can be alleviated by porting the transition from the main part of the hotside into the bypass port.

I recall reading that the FP WGA caused some boost spiking issues on the 20G-LT turbo. If it is indeed your FP HD actuator that is causing the creep, then you might wanna switch to the new Forge WGA for the IX or the standard OEM IX WGA.

 

yeah that might be it, he said the hole is the size of a nickel and can also be ported to make bigger. he said he just had some other guy take off his o2 housing and it fixed it, but I am just worried that my wastegate will be the problem of creeping.

 

ok i just read on Fp's site that the 18psi wastegate wont do much for a pump gas car but wont hurt it either, i guess i just have to trust em and see what happens

 

You dont port ebay housing, its not recomended as it is stainless steel. You boost creep is due to actuator and boost controler. every boost controller has it resistance. (you can see how not easy for the air to pass through it by blowing into it.) so if you take boost controler out and just hook up WG to boost source you should see about 19PSI or so with 0 preload on the actuator arm. If you use hallman you will see creep happening. If you dont planing to run 24-25 PSI you would be better of stock 9 actuator.

Best of luck

 

Does anyone know how much they are?? My tune is wednesday so I would need it tomarrow.

 

anyone have this problem with the fp wastegate?

 

i had creep when i had my 20g-9-5 with the high boost acuator. sucked.

 

howd u get it to stop