Well I was putting on a hallman Evolution in-cabin boost controller today on my IX. To make a looooong story short, after hooking up everything the boost controller wasn't restricting boost when it was turned all the way down. Blah blah long story (yes I asked a few people about what could have been the cause, but nothing). So I took it off and put everything back to how it came stock. Well when I was driving afterward, the car seemed to be spiking a bit higher than usual. I have the factory boost gauge in and it would drop all the way past 1.5 bars, to I would guess 1.6 or maybe 1.7 (stock gauge doesn't show further than 1.5). So I am not sure if I could have done something in the swap that would cause this to happen. Is it safe? It's cold today (44 F) so possibly it's just because of the colder than normal weather? I'm just worried that it might be boosting too high for safe levels.. I'm not sure.

I'm getting it tuned this upcoming Saturday by Al so it's probably not a big deal, I'm just trying to make sure.

Thanks ahead of time.

ps. I am aware that the factory gauge cluster isn't the most reliable

 

My halman you have to turn outward to turn down the boost, and inward to turn it up.......so if you cranked it all the way down it would be all the way up. Did you try that?

Also, did you replace the stock vacuum tubes? They have a restrictor pill inside them.

 

This is not normal. I'm sure we could have troubleshot the Hallman for you had you asked us, but since you went back to stock, we now need to troubleshoot that. The IX ecu lowers boost when detecting additional airflow, so if you are seeing spikes above 1.5, then you didn't reconnect everything properly.

You have to make absolutely sure that you reused the factory boost lines with BOTH RESTRICTOR PILLS. Hook up everything exactly as it was when stock. Do not use the new vaccuum hoses that you used on the Hallman. Be sure that the long hose coming from the BCS has the pill closest to the BCS, and then make sure the short hose going from the tee to the turbo nipple has the other pill.

 

hmmm... maybe that was the problem? damn.. why the hell would it do that :\

 

****, I can't get to my car till probably Thursday.. Maybe i'll try putting everything back with the hallman and seeing if it's actually reversed?

Or maybe I'll just check all the lines again and make sure I didn't goof up. Although, I'm nearly 100% sure everthing was put back to the way it was when it was stock.. sigh

 

It has arrows on the knob that say which way to go for increased (+) or decreased (-) boost. On a Hallman, to increase, you turn clockwise (screws tighter/down), and to decrease, you turn counter-clockwise (screws looser/up).

 

Well.. That's what i was doing. So I guess that's not the problem

 

make sure the lines are in the right holes on the mbc.

that and u should try getting another boost gauge, just to make sure.

factory boost gauge is not all that's cracked out to be.

 

you also probably had your lines backwards, happened to me the first time i hooked up a MBC in my 03. it wont restrict boost, went for a run shot up to 30 psi, came back and had to take the lines out and give it a good look and realized i had the 2 crossed.

 

My 05 spiked 1.55 bar with stock boost control solenoid and an open element filter

 

I am thinking that something must be wrong, i'll need to look at it all again as soon as possible

 

what did your car spike at before the install? and did you add any parts at this time?

 

I just installed a autometer boost gauge in my bone stock IX. I'm hitting 23 psi peak and it tappers to 17-18ish psi by redline. This is normal right?

 

depends on what else you have done to the car and also depends on other factors like location dealing with climate. also there is a really good post on hear about the differnces in using something like the autometer to read your boost as aposed to something like the aem. an evo nine should hit 20.5 then taper. the kinda of gauge u r using is no the most acurate so its most likely fine.

 

so when it shows 23 psi I'm most likely hitting 20ish psi? I got the autometer gauge for free from a friend untill I can get the defi gauges.