Ok.  This requires some explaination, so bear with me, here.

I don't know how many of you have been following the troubles with my car, but there have been some changes as of real recently.  Both my sisters (in one car) a buddy, and myself (in my car) went up to a car show last Sunday.  Well...something odd happened on the way up there.  On the highway, it was doing its usual "won't let me fully boost" thing.  Sometimes, if I keep my foot planted for a couple of seconds, it will finally reach full boost, but that's too little, too late in a race, of course.  :(   But when I exited the highway, and was driving down North Avenue, I could hear the turbo spooling LOUDLY over my stereo, even though I was hardly touching the pedal.  I muted the stereo, and listened again as I gently steped on the accelerator.  I was like "what the hell?"  I looked down at my gauge just before I took my foot off the pedal, and noticed it was at nearly full boost!!  I'm like "ummmm.....what the hell is doing on?"  Traffic cleared out a bit, and I laid into it a bit harder.  BOOM!  Instant full boost, within a fraction of a second.  Both me and my buddy were like WHOA as we got thrown back in our seats.  I knew something was wrong, but I wasn't complaining.  :D   We had to make a left at a light to get into a gas station, and the arrow had just turned yellow, so I nailed it.  Both me and my buddy were like "HOLY S***!!!"  I had to back off it to avoid an accident.

Anyways, we filled up, and back tracked to the show where me and my sister took home an award.  :D   (*Under his breath*  Then again, so did everyone that showed).  I looked under the hood, but couldn't see any immediate problems.  At first, I was thinking "maybe it's just finally running like it should have all along".  But I knew that wasn't the case.  I did nothing to it, how could it just miraculously start working?  On the way home, we took Kingery to experiment a bit more with what this car was doing.  I only had a chance to punch it a couple of times (too congested), but I hit boost/fuel cut a couple times, and got the SES for it (which I figured was what the code was as soon as I saw the light come on), so I knew something was wrong.

Well, when I got home, I took a closer look under the hood, and realized the line going from the wastegate selenoid to the turbo had popped off on the turbo end :eek: so nothing was limiting the boost!!  I couldn't bring myself to reconnect it.   :oops:    Last night was the first time I had a chance to push it without a ton of traffic in my way.  I took it out to that Rt. 59, a street near me that practically becomes a race track on weekend nights  :P  .  Well, we gave a late 70's and a mid-80's Camaro a surprise, an S2000 gunned it behind me and changed lanes to pass me, but by the time he got next to me, I was very, very slowly starting to pull away from him (should have seen the look on his face, lol!), and I couldn't get this C5 'Vette to bite (-I'm not a ricer- I know he would have wasted me , but it still would have been funny to see him have to really push it to beat this "piece of crap, ancient family 4-door Pontiac").  Keep in mind, this thing is far from functioning 100% correctly, yet.  It's just having a MUCH, MUCH easier time boosting like it should.  It's still having a ton of trouble off the line.  I can't even get it to peel by brake torquing, which even the n/a can do very easily, so there's still plenty of issues.

Now the REALLY odd part.  Coming back home, we ate at the Denny's by the mall, and headed back down New York St.  When I came up to the light at Rt. 59, I got in the far right lane, which comes to an end just after that intersection.  There was a Corsica next to me, and a newer Cavalier in the far left lane.  The light turned green, and I put the pedal half way down.  I heard the chirpping of the wheels next to me (the Corsica), so I put it down a hair more.  I look in my side rear view, and he wasn't disappearing.  I turn around and look, and he was just in my blind spot.  I'm like WTF??  So I put the pedal down all the way, and just barely creeped past him and made it into his lane before mine ended.  The whole rest of the way down to Ogden, we were going back and fourth, gunning it, and I had to keep putting the pedal to the floor to be slightly faster than him.  I wasn't willing to go past 70 MPH in cop central, so when we turned onto Ogden, I just let him go.  I wanted vary badly to stop him and ask him what the hell he had done to that thing, because there isn't a China man's chance in hell it was stock!  Believe me, I know n/a 3.1s, and they're slow as molasses.  My AWD 6000 should have been able to keep up with it (maybe a slight edge to the Corsica, due to the weight advantage), let alone the turbo 3.1???  Now not knowing what happened there is going to haunt me forever.  :(

Oh well, the car is performing 10 times better, and I'm more than happy with that.  Though I know I'll have to reattatch that line, soon.  Constantly leaning out and melted pistons wouldn't be a good thing, but it's so much more fun this way.  Anyway, just had to share.

Well, I don't know if you are looking for help, but here goes.  I knew IMMEDIATELY what had happened when you explain it.  That means one of a few things are bad.  
1) Boost Control Sol. is bad.
2) ECM is asking for 100% w/g (Which will give you 4 psi)
    The latter could be due to many things, but you need to find out which.
Get that thing on a scanner and watch the w/g sol.  If the ECM is requesting full boost, and you aren't getting it, you know where to start, but until then, you don't really know what the problem is.  I have a situation kind of like that, but I can't get my damn cable to work right.  

My car is giving me full (regulated) boost in 2nd gear and only second gear.  1st gear (programmed) is limited, then when I shift it takes off like a bat outta hell, and if I let off, and get back on it, it will only give me 4 psi.  (Can bearly beat a V8 Cherokee w/ 4 psi)  So, I'm going through the same as you, I'll keep ya updated when I get the damn laptop and cable to be nice.

Quote from: god910Well, I don't know if you are looking for help, but here goes.  I knew IMMEDIATELY what had happened when you explain it.  That means one of a few things are bad.  
1) Boost Control Sol. is bad.
2) ECM is asking for 100% w/g (Which will give you 4 psi)

So does this also have something to do with why its so slow off the line, my TGP is the same way, its a turd off the line and would be sadly embarassed by our '88 Beretta 3.1/5spd off the line.....
I don't suppose you have the part number for a new BCS do you?

I don't suggest this for long, but try disconnecting you're BCS for a pass, it's quite nasty, there is a reason for this though.  You're transmission will live a quite short life if forced to control full boost torque when the (VERY SMALL) turbo is allowed to make it.   IOW, 1200 rpm or so, here's another reason my 5 speed car is so much faster than the auto, it's a manual, so it can take the torque the engine is allowed to produce (Well, it COULD, before the giant hole) So you can program the chip for a lower band torque output.  JeffM (and the factory) have programmed these chips to allow for transmission longevity.  By installing an MBC (such as a grainger valve) you are bypassing the factory setup, and allowing IT, and ONLY IT to control boost pressure.  Thereby NOT ramping boost as the $8F is designed to do.  THAT is why these cars are dogs off the line.

I don't have the part# for the sol. but I know Shaun dbtk2 replaced his not too long ago, he might remember.

WTF..I have the same thing. The selinoid won't kick in till about 40mph or 2nd gear. Must be in the code. Only a fresh trans on mine will tell..  :lol:   :roll:

Well, I suppose I should run down a background of what I've done so far.  I've got brand new plugs (non-platinum Rapidfires gapped at 35), wires (cheap brand for now, have 8mm MSDs), coils (<-both AC Delco->), ICM, O2 Sensor (yes....it's a Bosch  :oops: ), and TPS (from Napa).  Now, I've had trouble with this thing running smoothely since day one.  It would cut me off something fierce when boost was nearing max, and always did those stutter type acceleration, where you'd step on the pedal and get moving, but then would need to press on the pedal a hair harder to keep the same rate of acceleration going.  It's always done this, with and without the stock air intake set up (now has a K & N directly on the turbo).  Pressing on it more than half way smoothed it out a bit, but still choppy over-all.  After changing the plugs (which, if you saw the pictures I put up a while ago, were horrid, gapping at over .60!!  :shock: ), things did improve quite a bit at the top end of boost.  I presume I was blowing out the spark due to the severe gap.  But things got much worse with the idle immediately after I changed the TPS.  After installing the brand new one and starting it up, it shot up to 2K RPMs immediately!  I thought maybe it needed a moment to adjust to the new, clean sensor reading more accurately.  Well, after a minute, I gave up and manually tuned it back down.  It was fine for a week, then it started to go nuts, idling up to even 2,500 RPMs, and coming a tad bit down when it lightly back fired, then right back up again.  Sometimes, it would just start going nuts at random RPMs, and several times lately, it gags when the SES light comes on, sometimes even dying when you go to move from a complete stand still.

Now here's the deal.  These all sound symptomatic of a fuel issue, i.e. the FPR or injectors, and I'm sure they probably could be part of teh problem.  But the only SES light I've gotten (aside from the overboost a few days ago, which was for obvious reasons) is for the TPS voltage low.  Once, and only once, I also got a MAP sensor voltage high.  Both of these have been intermittent, never staying on more than half a minute, max.  Which is why I'm confused as to whether it's the sensor, or a wiring issue.  Correct me if I'm wrong, but don't both the TPS and MAP share a ground?  This has me curious, along with Luke's story.  I haven't had time to swap the old sensor back in, but wouldn't the light be on constantly if it was the sensor itself?

I should also mention that I've tried the computer from my spare engine, and have used both the stock chip, and the Jeff M 160 chip in both computers.  No dice, same symptoms.  

One last note.  When I had a scan done a few weeks ago (idle only), everything was reading fine (TPS and MAP included, though the SES light wasn't on) except the fuel integrator figure, which was fine at open loop, but dropped when it closed to 110, and than rapidly went down to 85-80, then jumped right back to 110 to start the process again.  I was told it shouldn't ever be below 120 to begin with, let alone drop that low.  I was also told that that's a good indication the FPR is shot.  I plan on changing the FPR (already bought it), and have the injectors cleaned/balance flowed, anyways, but I was wondering if this sounds accurate?  I'm waiting till everything is in place to do this all in one shot.  Don't want to keep removing the plenum to get to various things.  Anyways, that's the deal so far.  All this stuff is getting replaced sooner or later, anyway, but I'm real limited on time right now, and was hoping to try to pinpoint the immediate problems to resolve those, first.

Oh, one thing I forgot.  I know they're supposed to not take off super hard to not be too rough on the tranny, but this is beyond normal.  I mean, I can brake torque it, and STILL not even get a chirp out of the pathetic, low on tread, K-Mart tires.  Even my n/a 6000s were able to squeel like hell off the line.  To call it sluggish is a gross understatement.  On that day we got the red TGP fired up, even in it's pathetic, things in the engine bay were taken apart, state, it STILL lit up the tires to no end.  I had to take my foot off the pedal to stop them from spinning.  And that's with much wider tires.  This thing just literally feels like someone stuffed the tailpipe, and then it suddenly breaks free at around 30 mph.  Maybe a plugged cat?   :?:

Quote from: 6000STE/AWDOh, one thing I forgot.  I know they're supposed to not take off super hard to not be too rough on the tranny, but this is beyond normal.  I mean, I can brake torque it, and STILL not even get a chirp out of the pathetic, low on tread, K-Mart tires.  Even my n/a 6000s were able to squeel like hell off the line.  To call it sluggish is a gross understatement.  On that day we got the red TGP fired up, even in it's pathetic, things in the engine bay were taken apart, state, it STILL lit up the tires to no end.  I had to take my foot off the pedal to stop them from spinning.  And that's with much wider tires.  This thing just literally feels like someone stuffed the tailpipe, and then it suddenly breaks free at around 30 mph.  Maybe a plugged cat?   :?:

Oh I know how that feels, mine was the same way...hopefully its not the same after we get it running again....  :evil: