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am close to joining the party. just need to order the sucker.

any one of you running with the gm boost control solenoid?

Logging would be great but my first priority is getting the car legal.These late night terrorizing events have been fun and all but im just waiting to go to jail before getting to really enjoy the car lol.Went out again last night and didnt get a CEL for the first time yet and it was my longest drive yet - 20 miles or so.I am having an intermittant bucking problem that is getting better and idle is funny still.I must say though all in all this thing is a god damn monster now and i havnt even dared to push the power mode switch yet!

Ok well I tested it out tonight and holy shit!! I was kind of "forced" to test it out. A Scion XB (the ugly box cars) rolled up next to me on my way home. He kept toying with me so when we got to the next red light, it was on. Haha I not only murdered, but disembowled and skull fucked the driver lol. The car feels AMAZING now! Hellooooo top end! It honestly felt like I was doing pulls in my friends STi. All in all, I'm very happy with this chip now. The ECU is still learning a bit, but otherwise everythig is A-OK.

gijonas, yeah dude, get it legal first! Also, remember the Power switch is a different set of maps for running 93 octane, switch it with the car turned off.

Scotty, are you using an MBC or the stock BCS?

I started with the stock BCS, it never settled down to a solid boost level at WOT with my 7lb wastegate. I switched to an MBC and used it like that for a couple months.

Just the other day when I swapped throttle bodies I reset the ECU and went back to the BCS to see what would happen. It tried really hard to settle at WOT in 3rd and 4th, but in 5th it never did. After swinging back and forth in every pull, finally something just defaulted to 11psi unless I shut the car off and restarted. After 2 of those episodes, I just slapped the MBC back on, as it is reasonably smooth.

I will try again when v.2 comes out, but I suspect that they will either have to tune specifically for a 6-7psi gate or else make us all get 10psi gates in order to run the BCS.

The BCS works cool, the way they have it tuned it goes up to like 11psi with med-hard throttle, and not until you PIN the throttle does it go for 14psi. I kinda like that feature.

However, if I end up having to use the MBC, I will probably try putting my VF-8 back on and seeing how fast it spools with this chip. I'll then log some injector duty cycles to see where they are at with the larger turbo.

FYI my EGT's were very well behaved today with the MBC back in line and the ECU learning settling out with the new throttle body.

Hmmm ok. I know they designed the chip so that you wouldn't have partial-throttle full-boost issues. So do you think the chip/ECU is going to freak out if you use a MBC and end up having a PTFB situation?

No, it seems to learn around the PTFB that the MBC introduces just fine. I have an LC-1 Wideband AFR hooked up, and it shows the ECU is getting the ratio correct after a bit of learning. EGT's are not an issue at part throttle either.

With my setup, full boost doesn't occur until like 75-80% throttle anyway as far as I can tell.

Oh ok sweet deal! Maybe I'll go buy some vacuum hose tomorrow and try hooking up the BCS just for shits and giggles. I'll let you know if they resolved the problem with the chip I received.

Remember, start low!

Haha will do. I must say, when I raced that stupid kid last night, the car felt AMAZING at full throttle - full boost. Redline came so fast! Haha.

What were your issues, exactly?

Oh, I didn't have any issues! When I initially installed the chip, the car ran VERY lean. I was kind of scared to drive it around, but it slowly began to act normal. Now it runs just like it always has (sometimes a little lean when the engine is still cold, but I think it'll learn around that) and when I gun it, it really likes to take off! I'm just impressed with the power output the car has now. I'll be interested to see what the fuel savings are as well.

Man, if you are not having any problems with the BCS hooked up, stay with it. It's a much better system than the MBC.

Do you have a Wideband AFR? I would not screw with an MBC on the chip unless you do.

Also, using the MBC changes the tuning, if you went back to the BCS things would be haywire for a while and probably just require ECU reset.

If you want more power, try the 93 octane, I have not yet, but I can't wait once I have my issues worked out with v.2.

Oh sorry, I must have worded something a bit funky. I'm currently using a MBC and have not tried using the BCS. This is because when I originally installed my MBC I bought new vacuum hose to hook it up and now the hoses are not long enough to hook back up to the BCS.

I was saying that maybe I should go buy new vacuum hose so that I CAN hook up the BCS.

Also, I have the MBC set to 15 PSI, 93 Octane fuel and I have the switch set to the power mode. So it's one PSI less than what it should be, but then again I am running a larger turbo than what the chip is designed for.

I did some logging with my wideband under full boost the AFR does not creep above 12:1.

Hah, I'm a retard, I read MBC instead of BCS. OK, you are fine. What's your wastegate pressure on that turbo?

Also, creep up on max boost slowly if you hook up the BCS without resetting the ECU, it will probably bounce into the 20's before getting back into the 14 range.

I'm not convinced that the chip can deal with a wastegate under 10psi, though.

The VF39 I have has a 10 lb. spring. Think it will be able to control it?

Yeah, that might actually work.

Ok. I'll hook it up tomorrow and let you guys know how it goes.

Well i got my car legal finally and have been putting on some good miles.I just tried the power mode for the first time today and although i have not really noticed much difference power wise,i definately do not have the problems associated with non power mode.With the switch in the off position the car will not get rid of this annoying bucking/falling on its face issue when letting off after just starting to boost.Sometimes it does it sometimes not,also idle is basically shit when cold.After trying power mode today it had none of those problems.

I am now wondering if i plugged the switch into the chip in reverse?? so maybe ON is actually OFF? who knows.The other sucky thing is im not sure if my boost guage sucks bad or not,it is definately slow to read the boost and it has only shown a maximum of 9.9 psi.This was a long WOT pull in 4th.The car runs real good and real strong but i am not familiar with these cars in stock form.In other words i am pretty happy so far but perhaps i just dont know what 15+ psi feels like and i am not getting all i should yet?

Trying to get set up for logging but it will be a bit before that happens.My LC-1 says its running safe but it sucks not knowing what is going on other wise.then again my motor has 100 miles on it so far so maybe max boost isnt that great an idea yet

I know Mike @ Revtronix is working on a chip update to correct the Normal (Off) Mode (14.5psi) settings.

In Power (On) Mode mine is a solid 17psi, so I'd check vac lines, etc. if yours is less.

Like i said im wondering if my gauge is just crap.If i hook a hand pump up to it i can squeeze to max in half a second and it takesd like 5 seconds for the digits to climb ,and then it falls back down almost as fast.I thought $80 was enough for a simple gauge.Anyone suggest a good mechanical one? or at least reliable.

BTW:

When are you seeing this 17 PSI?

Most reliable would be what the MAP sensor is seeing via the ECU (using b10scan, revscan, evoscan, etc).

Just a reminder for everyone -- it took my car a good 500mi+ before the ECU relearned things since the reset and chip install. After that, no more idle issues and good power through the gears.

^^ good to hear.Im only at like 180 miles now,guess i need to be patient.On another note at least on my trip just earlier i did see over 14psi on my gauge so maybe something got better when i played with my hoses.

i didnt hit full boost until i did like 5-10 full throttle runs on the highway going from almost 0 to 100 km/h
ever since theres no problem i can hit 14 psi every time. i'm pretty sure the computer doesnt do any boost learning unless its at wot. and if at wot the boost is lower or higher than the target it will then adjust.
but thats just me thinking out loud i could be wrong.
-Alex