I have a perfectly working unit with no spikes happening or anything wierd. My question is should everyone grease up the ball or go by if it ain't broke don't fix it? If Mike from Forge could answer it would be appreciated, TIA.

 

When I purchased my Forge MBC (brand new) it worked perfectly fine, 2 weeks later the spikes started to happen.

I'd say grease it only if you experience the spikes, if that happens you already know how to solve it.

 

I've been running "spike free" for several days now. Although I noticed that it holds 21 psi to about 7000 and then begins to taper to 19 or so.

 

I haven't installed mine yet. But I'm about to go to the store now and pick up some of this synthetic bearing grease. I figure it's better to get it before the problem occurs.

 

Warrtalon and I pressure tested the system yesterday and it held tight at 25psi, so that's not my issue.

I can only hold 17-18psi with the soft spring and the stiff spring causes my boost to fluctuate ... up down up down pretty wildly (actually the fluctuation happens with low boost soft spring too just not as dramatic).

We are down to two possibilities ... either something is wrong with my Forge MBC and/or the springs, or my stock wastegate actuator needs tightening. I'm now leaning towards the WGA (especially since I hold less boost with soft spring maxed out and less boost with stiff spring all the way - than everyone else).

Final troubleshooting will be to replace the MBC with a unit that is known to be working well as see if it still exhibits the same behavior. If so ... WGA here I come.

 

When i swaped my UNOS out with my buddies Hallman, it worked perfectly. I thought it would be the WGA as well.... Nope. The ball in the UNOS was just getting stuck.

 

i just installed my forge unos and i cant hold boost....i checked for boost leaks and i have no idea what the problem is...with both springs it tapers... with the soft from 17ish to 15ish with the stiff from 21ish to 16ish...i keep reading about tighting something on the wastegate but i dont know what your talking about? can some1 explain it or possibly have a picture to what i need to tighten

thanks

 

my boost isn't spiking like you guys...but could the grease possibly solve my problem?

 

I'd use the grease even if it's not the problem. Better to be safe than sorry. Think of the future. How many clicks did you turn the UNOS using the stiff spring to get 21 and droping to 16? Did you buy this MBC used?

 

the mbc is brand new i did 17 clicks..

 

i just tried my friends hallman pro and held 21 and dropped to 19.5/20ish...so now i know there are no leaks....i threw my forge back in there and when i accelerate hard when i get around 5-5500 the car pause's couple times then keep going...thats boost spike right?

 

Um, no...? You think boost spiking is when the car pauses?? A boost spike is when your roll into boost and it spikes really high. We hit peak boost in the mid 3000s, not at 5000+. Are you saying that you're getting fuel cut?

 

i guess.....then its a fuel cut....i turn it down a couple clicks and still does it....im going to buy some grease tomorrow, try that, then well go from there....seems like that solved every1's problem....so be4 i waste every1's time ill do that thanks.. but can u explain what i need to tighten on the waste gate thanks

 

last thing...do u think i should crush my bov...i have a ix so i know they work well up to 30 in most case's..

 

Um, I'm very worried about you. I don't even know what your problem is yet, and I am pretty sure you don't know either. Is your boost spiking to 27psi at 3500 rpm in 3rd gear (spring not seated)? Is it only showing 21-22psi at 3500rpm, then at 5000rpm your car bucks violenty and loses power, then will resume after you let off the gas (fuel cut). Is your boost normal during one pull, then running crazy high the next pull (ball needs greasing)?

I don't want to explain how to tighten the wastegate actuator, because that is not a normal thing to do on the stock WGA. You should not be trying to do that with your stocker. I think you keep getting way ahead of yourself on your brand new car and should take a step back and chill out. Hell, you got an exhaust cutout FIRST (holy cow), and now you're talking about tightening the turnbuckle on your stock WGA (jayzus!).