I tried searching for any help but didn't find anything related.
But anyway, I got my buschur licp installed today. The licp had come with 4 worm clamps, but with all the posts i've read about couplers popping off I decided use some t-bolt clamps instead. I also read on the how to section for the horsepower freaks licp install that boost went up for that guy. So after the licp was in I checked to make sure it wasn't boosting past what I had it set to which was 21psi.
Now before I got dynoflashed, my mbc was set to 21psi, but would spike to 24 in 5th. After getting dynoflashed, it didn't spike anymore. It held steady up to 21 from 3rd all the way to 5th. Now for some reason after ithe install, it's dropped to 18psi.
I know I can probably just adjust my mbc so it's back to 21psi, but I don't know if I'll get that spiking problem I had before. What are you're guy's suggestions? It was checked for leaks, but didn't find any. Do you guys think I should just raise it back up to 21psi? Or is it possible that if I do it'll mess up my Dynoflash tune?

 

Boost leak?

The lower i/c piping shouldn't drop your boost level.

 

Definitely check for boost leak, the turbo outlet pipe is known to leak. In my case it leaked so bad it caused my turbo to whine or screamed during spool up.

 

Yeah that's what I originally thought. And it was checked for leaks, but none were found. But for some reason boost dropped.

 

Just because the leak isn't obvious doesn't mean its not there..

In an ideal world you could like hook up a compressor when its cold and look for pin holes of blowing air.. That would be a tought setup to accomplish though

 

Yeah, that's true.

 

basicly man you gotta look at it this way. it was tested and it came up with nothing well obviously thats wrong, the lower ic pipe isnt a boost controler, it isnt a mechanical piece in the motor, it isnt hooked up to any sensor that are gonna drop your boost. it boosted fine with the stock so there for you have a boost leak or i guess the only other thing it could be is when someone was installing it some how they maybe pinched or fraied a vacuum hose but other than that, i will bet you there is nothing wrong but a boost leak at the licp. if you really think there isnt why dont you just put the stock back on?

 

Well this sux. I really don't wanna have to put the stock one back on. I guess I'll have to check again for leaks or something.

 

bump for any other suggestions

 

Damn, well guys, I went and talked to the shop that installed the licp. They told me that it's normal for boost to drop a couple psi after install because of the piping being larger diameter. Does that sound right to you guys? They suggested turning up my mbc back to 21psi and if it won't hold, then there definitely is a leak.
Well, I was able to turn my boost back up, but now I have the same boost spike that I had before my reflash. I'm at a loss now. I don't wanna have to get another reflash just to keep from spiking to 24psi in 5th. Any advice?

 

get your money back and do it yourself. it shouldnt drop at all. the only thing that the LICP does is increase airflow or make the air flow more direct. thats all

 

It makes sense. I know that when I put on my larger front mount it seemed like it took away from the bottom end power so the moral to the story is that it would make sense to take away from your boost also. I wouldnt't think that it would hurt anything if you turn your boost back up to 21 psi, after all your car was tuned for 21 psi.

 

Maybe you should think about getting an EBC so you can adjust on the go. I have heard that sometimes you have to mess with the MBC a little to get them were you want them. Just a suggestion.

 

Did the boost reference source change? The stock pipe has a pressure source fitting that the stock solenoid is hooked too. This should be where the MBC gets its reference source when you disconnect the stock solenoid. The buschur LICP doesnt have this pressure source port, so you have to use the BOV line source (not recommended) or some other boost reference source. If you change this source, then that could effect the boost level without changing the MBC setting. You said a shop installed the pipe for you, maybe check with them to see where they are getting the boost pressure source from or you can look yourself. If you had a big boost leak like that you should hear it.

Brian

 

Yeah, I've pretty much ruled out a boost leak, it's just the hassle of tweaking my mbc to keep it from spiking in 5th that's bugging me. But they did tell me licp and larger fmic usually result in a pressure drop. Made sense to me when he explained it.