that's good to know. thanks.

 

This was the path I took at first. A Forge UNOS MBC, Tuned by Scot Grey at 21-22psi and made a nice improvment. Didn't want to run around on factory map, especially on 91oct.
Since then, have added a Megan TBE w/cat delete, Drop In and a Walbro 255 and made an even better improment.

 

The boost controller and tune will help from tapering. When you get on it, the turbos peak boost will be 19 psi for about 1 second and then it tapers down to 14 -15 psi until you get higher in RPMs. A tune and boost controller will help boost to 20 or 21 (safe) and taper to 18-19 psi until almost redline which is what you want. If you are concerned about noise, keep the stock cat back and spend your $ on a downpipe with an electric cut out and get a race tune. When you're around town have a good moderate tune but when/if you decide to go to the track pop in the race tune and open the cutout when you're about to race.

 

can you recommend any?

 

Hallman or Forge for the boost controller.

 

Good information. I've been wondering about this as well so I appreciate being able to lurk along with this thread. I've been thinking about it alot lately since the hot weather around here (nearly 100* lately) has not helped. I've been reading 16-17psi on my Defi boost gauge typically in the recent heat.

So my question is, is a MBC even necessary with a reflash? I mean, if the flash already controls the boost, isn't the MBC redundant and unnecessary?

 

Yes, don't waste your money on it ... despite what people tell you. Go with a reflash, it can control boost more intelligently.

 

yup he is right, you can control boost without taper using stock, just modify the wastegate duty cycle, take out the restrictor pill near the solonoid and adjust the error correction table. Im able to stay at 20 to redline with 22 peak without anyproblems. of course using the MBC is fine to just remember to take out the pill and you wont see the 20 to 15psi taper after 1 sec!!

 

My first and "only" mod was a mbc. Then everyone said I had to get a tbe. Then an intake, then a BOV to hold the boost more, then a walbro before the flash, then ic piping, then the custom flash, and now I'm waiting to get cams! Look what it turns into!!! Stay stock!!!

 

possibly the wisest thing i've ever read

 

Well I quess your the type that does what everyone tells ya to do. A Follower, hahhahahha. Be a leader man not a follower. use your own intelligence and figure out whats best for you and not what people think is best for you.
But, im glad you listend to them this time, you did good.! Now add to the list, kevlar timing belt and a fuel rail to the list ok follower,

 

Well they were all my choices in the end. But might as well do the kevlar right? They're already in there. Why not... Well I guess I could have used the example saying I kept craving more power and was appropriately advised on the best course of action... How's that???

 

I guess you're a follower too if you've ever taken advice from experts... In the case here, it seems that Im the leader though doesn't it???

 

You can get exhausts with high flow cats and resonators that will keep it more quiet, and if you really want (which i dont recommend) use a silencer (usually comes with the exhaust). Overall forcing more air into the engine but not allowing it to pass through the exhaust more effienciently is like clogging your arteries and not allowing them to pass the blow through most effieciently (strange analogy i know). Or running a mile and only able to exhale half the amount of air you are breathing in. Going MBC wouldnt be bad, but without the proper additional fuel management parts, you are gonna run into problems if you arent experienced. So i would recommend looking into an exhaust first and then doin some more research to figure out what route you really wanna go. Good luck!

 

really don't want to make it any louder, that's the thing. i guess i'm sticking with stock.