Forge Wastegate Actuator

[kamon8404]

I have heard from 2 different members that they were having issues with boost after installing the forge wastegate actuator. Does anyone have any good reviews of the forge wastegate? How long have you been using it?

[zuku26]

Once I got it set right I haven't had any issues with it. I will say that I don't hold boost well but I'm not sure if it's the Forge or the Knock-off SSQV.

[kamon8404]

I see. Well whats happening to your boost?

[MSPYOUNGERS38]

im sure its the wastegate over the bov. but why im not sure yet.

[zuku26]

It just doesn't hold at 6 PSI the whole time. It'll stay at 6 PSI for a couple seconds then drop to like 3 PSI. Some have said the ATP unit actually holds at their set PSI.

[kamon8404]

Yeah an atp would be good but I have a 28rs like you, so I would need the adjustable arm.

[MSPYOUNGERS38]

see sometimes on certain things like that you wont need the same boost level to have the same power, if that makes any bit of sense but i havent done much with the wastegate because its not need on a slightly modifed application.

[kamon8404]

Yeah I understand that. I am just having issues with my wastegate so I am looking for a replacement.

[MSPYOUNGERS38]

find the stock replacment and put that on.

[kamon8404]

Forge is a stock replacement.

[MSPYOUNGERS38]

whats wrong with the old one why do you say its fualty?

[kamon8404]

Oh goodness. Why are you cluttering my thread with this nonsense? Either way, because I already know I have too much pre load on my wastegate (it will boost entirely too much). However, at the same time my idle vacs are around 10hg which is about 10 too little. So its idleing like I have the wastegate too loose but its too tight. I know this is a wategate issue and I'm looking for a replacement anyway. I have about 80k on my wategate.

[MSPYOUNGERS38]

cause i dont think it is the stock one.

[kamon8404]

Huh?

[jmv]

... its quite possible your wastegate diaphragm is torn, and that is why you have a huge vac leak and it doesn't control the boost. Try blowing into the vac line going to the wga, if air goes through then its bad.

I'm probably one of the guys you've read about having issues with the forge... i've never gotten it sorted out, even though forge has tried to help me with it. I would go with the ATP, but you'll have to be ready to replace it in 20K miles. Hopefully you have better luck with it than i did, but thats about how long my ATP replacement lasted. BUT, it held boost.

[kamon8404]

I cant use the ATP stock replacement wastegate. I am running a 28RS so I need something with an adjustable arm. I think my diaphram is torn this is why I'm in the market to replace it.

[J_Naoto]

my forge doesn't hold either. it spikes 11 and drops to about 8. before my atp failed, it held 8 perfectly.

[zuku26]

So i guess it's one of those pick your poisons situations. I could have sworn ATP carried a longer WGA that can be run with GT28RS

[kamon8404]

I just realized that. They make a bracket too. I emailed them to make sure it works with our application. Hoping so like a mo fo.

[kamon8404]

I talked with ATP. They said that wastegate is for an SR20. However, it is made for a GT25 to GT28 conversion (same as ours). I am going to be the test subject. They said they will work with me on pricing and all that good stuff. I already ordered it. Probably will be here next week sometime.

[zuku26]

Very good let us know how it goes. Also let us know what boost it's set at. That's actually the only reason I didn't go with a ATP. I wanted to be able to control the boost through the WGA versus a boost contoller.

[kamon8404]

Yeah its supposed to be a 6psi wastegate. I have an electronic boost controller, and soon to be meth injection with a fail safe. so the wastegated boost levels are important incase I have a malfunction somewhere in my system.

[cvp0917]

You guys are talking about the Forge WGA from ********** correct? -----------
I was curious about that as well. the "5-10psi" had me kind of antsy since im still mostly stock. if that wont hold the stock level boost without spiking about about the Garret one that sell that supposed to be the same as oem mazda? any good? ---------

Id rather not spend the extra $60 if i can help it as i need a unichip bad.

[kamon8404]

The links are blocked. Are you looking at ----- website?

[mgerst1]

the oem wastegate is too expensive, i got the ATP stock replacement and it holds boost great, doesnt overboost and will hold it as long as I want it to

[zuku26]

the oem wastegate is too expensive, i got the ATP stock replacement and it holds boost great, doesnt overboost and will hold it as long as I want it to

The only thing about that ATP unit is that they don't last long. Who wants to take that shit apart every 20K or less, to swap in a new one? I'd almost rather deal with the spike in the Forge unit. With mine it sometimes spikes over 10 PSI and that is scary to me with my GT28RS on a non-forged block. I keep off the thottle some and let it spike to 9 psi of so, and it'll hold to 4-5 psi most times. I have it set at 6 psi.

[cvp0917]

Ya its SU's website. Which one is the atp one? the cheapest on SU's website? also the garrett one im looking at is $199, forge is $140. Id rather not have to worry about spiking cause ive been driving it with no WGA for over a year cause im broke and im tired of looking at the boost gauge.

[patty AT forge]

jmv & zuku26,

I'm very much wanting to resolve this issue. Contact me via PM or email ( patrick@forgemotorsport.com ) I want to send you new actuators and get your units back so I can perform some tests.

[cvp0917]

jmv & zuku26,

I'm very much wanting to resolve this issue. Contact me via PM or email ( patrick@forgemotorsport.com ) I want to send you new actuators and get your units back so I can perform some tests.

Id be willing to do some tests if needed. Id rather buy the cheaper forge unit but the "5-10 psi" spring has me a little worried. is there anyone out there who doesnt have a problem with the forge units?

[FLAMSP]

subs

[patty AT forge]

Id be willing to do some tests if needed. Id rather buy the cheaper forge unit but the "5-10 psi" spring has me a little worried. is there anyone out there who doesnt have a problem with the forge units?

5-10 is an approximation on the range of adjustment available by way of the threaded rod on the actuator.

We sold just under 200 of these last year and we have two people in this thread with issues, I imagine that there are a few more but I'm sure that there are many people out there without issues.

[kamon8404]

I have heard from many members of the problems with the forge wastegate, this is why I started the thread.

[patty AT forge]

Please send them my way as I've only heard from these two... and J_Naoto makes three. They can PM me or email me at patrick@forgemotorsport.com

[cvp0917]

is there an approximation on how much to thread the rod to get what psi? i hoping for 7

[J_Naoto]

Please send them my way as I've only heard from these two... and J_Naoto makes three. They can PM me or email me at patrick@forgemotorsport.com

will do

[Outlawstar98]

Guys, Please dont have any talk about SU, its not allowed.....

http://www.mazdas247.com/forum/showthread.php?t=123700972

[StealthWyvern]

lets bump an old thread here.. Did anyone get their issues resolved?

[hornsfan10609]

I wish i had seen this thread earlier. My Forge WGA does the exact same thing as J_naoto, when my ebc is set at 6psi it spikes anywhere from 8.5-10 psi and drops to 5-6. It never holds boost steady, set to stock rod actuator length. I didnt know it spiked until i installed my EBC.

[89JDM]

Wow.. I think my WGA failed all together... Smh

[Tzar177]

Mine doesnt hold boost either

[StealthWyvern]

Mine spiked high for a little bit but then only had a 2-3psi spike and held fine... then i went 3" dp with 3" catless midpipe and it was boost creep city for me... not sure if thats due to the WGA or to free flowing exhaust.

[hornsfan10609]

Mine isn't consistent all the time. Usually I can get it to spike just 1-2 psi and hold but the other day it spiked 13.6 psi after turning down the EBC and it was spiking 9 before I lowered the boost. I doubt Forge will build me a new motor if this one pops due to their WGA.

[callITaDAY]

Just found out I need a new WGA. Anyone know which specific ATP part we can use for our cars? The only one I found the looked closeish was this:

http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=ATP-WGT-011B&Category_Code=VMSP

Otherwise I'm going to have to get a Forge, which you guys are scaring me away from.

[StealthWyvern]

http://protegegarage.com/893-product-893.html

[callITaDAY]

http://protegegarage.com/893-product-893.html

Sweet. Free shipping is always nice. Just ordered, hope the install doesn't go too bad.