You have to port the wastegate if you have a midpipe, a boost controller alone won't do it. Read Dave's writeup that was posted earlier in this thread.

 

If you are running the midpipe and have a good tune with a boost controller,without porting the wastegate, you will still have boost creep problems. If you do not want to port your wastegate, then your only other option would be to throw some restrictor plates in, or put a high flow cat.

 

Some people get lucky and they don't get boost creep with a catless midpipe. Most do, so unless you really baby it and are very careful to watch your boost on cool nights you should just port the wastegate.

PFC's do not affect in any way whether you will get boost creep and need to port the wastegate. Neither do boost controllers.

Dave

 

*sigh* thanks guys. Got my FD a month ago

 

welcome to the club

this is an absolutely critical issue...lack of proper boost control and inadequate fueling cost me two motors and likely > $8k

 

You cant really tune out boost creep w/ a fuel controller. You can probably mitigate boost creep to some degree with a boost controller, but only if you run a much lower boost than intended. For example:

If you were running 12 PSI and you noticed that the pressure was creeping up to 14 PSI, you would probably need to set your boost controller to limit your boost to 10 PSI and it would then probably creep closer to 12 PSI towards redline in the upper gears.

That would be a pretty shoddy way of dealing with boost creep, porting the waste gate would probably be your best option, or find some way to convert to external waste gate. = )

 

Ok so i just ported my waste gates and all i can say is anyone can do it. anyhow i was going to run a three in down pipe and three in allthe way back to a muffler. I also want to keep my stock ecu so i figured i would get a manual boost controler and set it low mybe 8 or 9 psi????? Dont know sounds pretty fail safe wanted to get some imput. thanks

 

You might still need a restrictor plate to keep the boost from creeping. It is only a maybe though.

 

You will need to run an aftermarket ecu if you want to run a full exhaust.