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      05-31-2009, 06:48 PM   #111
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Originally Posted by Vudoo4u2 View Post
fotios, have you tried running lower than default user tq? perhaps the combo of temps/gas quality in your area is making the car unhappy w/the boost targets on stage 1 with just dci?
also, before canbus my procede never gave me any issues at all. It was always strong and reliable which is why I loved it so much. Lately the procede and I havent been getting along. she doesnt like canbus..
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      05-31-2009, 07:06 PM   #112
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Originally Posted by fotios335i View Post
yeah, Ive tried 65% and pretty much the same issues, just less power. I always use shell 93 too. Like I said this map is running good but there is just something that getting set off. I just wonder if there is anything else I can raise or lower to stop the car from going into a limp mode under the circumstance I said previously. .
I was getting surging and oscillation on JB3 and Terry and others such as Scalbert and Shiv looked at my BT datalogs, and felt that I was dealing with a small boost leak.

As I mentioned in my previous post, I spent most of today checking the entire induction system for any sign of a leak and found none.

Here is what I did:

1) Removed cowl and DCI's and checked connection from charge pipe to throttle body

2) Removed splash pan and checked intercooler connections and reseated the O-rings (VK intercooler uses stock couplers).

3) Visually inspected wastgate actuator rods and jiggled them for free play and to see if they were sticking.

4) Inspected all vacuum lines running from wastegate solenoids, vacuum cannisters, down to the actuators themselves.

5) Inspected all vacuum lines running from intake manifold to diverter valves. Also checked diverter valve lock rings and removed one of the diverter valves to check for residual oil blowby compromising the seal.

6) Visually inspected intercooler fins and bars for signs of rock damage/penetration.


I didn't find anything, but car runs great now.

So I share your frustration, but like you, I thought I was having better luck with one tune versus the other

Perhaps it's a small intermittent problem with your car and you just need to go through a process of elimination sytematically.

It's always easy to blame the tunes, but fact is that many other people are running them succesfully, so it's more likely to be car specific.
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      05-31-2009, 07:13 PM   #113
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Im in the process of checking all this stuff over the last week or so but what confuses me is that with the tune off its fine under any circumstance. Maybe the extra boost is bringing out the issue. the ticking on my car is gradually getting worse and worse though...that might have something to do with it. Im bringing it in in a week or so.
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      05-31-2009, 07:14 PM   #114
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Originally Posted by fotios335i View Post
also, before canbus my procede never gave me any issues at all. It was always strong and reliable which is why I loved it so much. Lately the procede and I havent been getting along. she doesnt like canbus..
It has nothing to do with CANbus. Something is wrong with your car and you need to figure out what it is.

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      05-31-2009, 07:31 PM   #115
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Is it just me.....or do these 5-29th maps feel like a different tune?

Instead of hunting for the boost target, it seems to get on it right away and holds tight....unlike before where the boost curve had some wobbles up and down.

The boost also seems to correlate directly to throttle position more directly.

If you floored it, previous maps kind of rose to the peak boost target......but now if I go from 1/2 throttle to 3/4 throttle my boost gauge shows an instantaneous change to a higher psi.

Reason I ask is because I have been chasing down a supposed small boost leak, but after checking all the intake and intercooler connections and re-routing some of the wastegate vacuum lines, I can't tell if jiggling things maybe got rid of the supposed problem, or if these new maps just get onto target and are more boost stable?

Either way I am a happy man.....car is very fast and I don't seem to be able to invoke any surges or hesitations.....which I thought were symptoms of a small boost leak I had over the last several weeks.

Would appreciate your opinions.

It's not you... I have been biting my tongue for a while about the Rev.II since I switched from a JB3...knowing that Shiv is fine tuning for the future.

I can now say without hesitation...that this map is amazing! Real difference from the last set...my heart was thumping...hit 140 in a heartbeat. My wife even turned to me with a WTF look on her face! Datalogs for these maps show boost rising super fast and holding very steady (amazingly so, if you ask me). Also, boost barely drops by 2 psi during shifts.

I am impressed. Great work Shiv!

This is why I went to the procede... continuous improvements with the drive getting better and better with every Shiv update.
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      05-31-2009, 07:40 PM   #116
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Originally Posted by shiv@vishnu View Post
It has nothing to do with CANbus. Something is wrong with your car and you need to figure out what it is.

Shiv
well, you cant blame me for thinking it did. Cars is fine...install canbus wire pack..upload firmware/maps...then continuous problems. There might be something wrong with my car but anyone would think it had something to do with the tune. Its going in for service and we'll see if anything shows up. I think the limp mode has something to do with the tune. Its fine stock.
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      05-31-2009, 07:42 PM   #117
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any suggestions as to what it could be?? Maybe some ideas? You helped me when I was having problems with the jb3 when I switched over?
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      05-31-2009, 07:48 PM   #118
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Quote:
Originally Posted by fotios335i View Post
any suggestions as to what it could be?? Maybe some ideas? You helped me when I was having problems with the jb3 when I switched over?
I know you said you tried 65% user tq and still had the issue. What happens when you put it at 0% user tq, which would be stock level boost?

Maybe with a tune, the extra requirements for fuel, or boost are showing you the start of an engine hardware problem that will eventually show up at stock levels.

Sniz has an excellent post on how to check for boost leaks. After that, I would try spark plugs. If it still occurs, have the dealer look at coils and injectors.

Boost leak test: http://www.e90post.com/forums/showthread.php?t=193077
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      05-31-2009, 07:52 PM   #119
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Quote:
Originally Posted by scottp999 View Post
I know you said you tried 65% user tq and still had the issue. What happens when you put it at 0% user tq, which would be stock level boost?

Maybe with a tune, the extra requirements for fuel, or boost are showing you the start of an engine hardware problem that will eventually show up at stock levels.

Sniz has an excellent post on how to check for boost leaks. After that, I would try spark plugs. If it still occurs, have the dealer look at coils and injectors.

Boost leak test: http://www.e90post.com/forums/showthread.php?t=193077
I'll try that out thanks. Like I said before the car is driving great with the latest maps. The problem is the limp mode at the beginning of boost that I described. If there was something wrong or a boost leak why would it drive so well.
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      05-31-2009, 07:54 PM   #120
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Quote:
Originally Posted by roho3323 View Post
It's not you... I have been biting my tongue for a while about the Rev.II since I switched from a JB3...knowing that Shiv is fine tuning for the future.

I can now say without hesitation...that this map is amazing! Real difference from the last set...my heart was thumping...hit 140 in a heartbeat. My wife even turned to me with a WTF look on her face! Datalogs for these maps show boost rising super fast and holding very steady (amazingly so, if you ask me). Also, boost barely drops by 2 psi during shifts.

I am impressed. Great work Shiv!
Yes.....I also had that - I am going this speed so soon? experience as well.

A little unnerving because there was an absence of that usual rubber-band kind of thrust.....it seemed very linear and consistent.

But I was busy watching my boost gauge and on the paddle shift I saw boost drop from 14+ psi to 11 psi and then right back onto 14 psi with no secondary wobble like I was seeing over the last couple of weeks.


Question for Shiv: Is that within normal range for a boost drop between shifts? I am wondering if I might still have a problem with my DV's perhaps?
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      05-31-2009, 07:57 PM   #121
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Originally Posted by fotios335i View Post
I'll try that out thanks. Like I said before the car is driving great with the latest maps. The problem is the limp mode at the beginning of boost that I described. If there was something wrong or a boost leak why would it drive so well.
Sniz tried out the JuiceBox, and the Helix tune, and was having limps at 5500 rpm. The car ran great except at the point it limped. Turned out to be a small boost leak that once fixed cured the limps.
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      05-31-2009, 07:58 PM   #122
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Originally Posted by fotios335i View Post
I'll try that out thanks. Like I said before the car is driving great with the latest maps. The problem is the limp mode at the beginning of boost that I described. If there was something wrong or a boost leak why would it drive so well.
I know...it's hard to figure out.

If the leak is small enough, it might induce on initial low boost pressures, but seal itself up when higher pressures charge the system.

With inital boost pressure being lower than target, the DME will overcompensate for low boost by increasing the wastegate duty cycle.

Of course by this time, the leak seals itself off and you are now into an overboost condition.....which may be setting off your limp mode if it's high enough.

I was getting that boost undertarget to overtarget cycling on my datalogs
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      05-31-2009, 08:27 PM   #123
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I know...it's hard to figure out.

If the leak is small enough, it might induce on initial low boost pressures, but seal itself up when higher pressures charge the system.

With inital boost pressure being lower than target, the DME will overcompensate for low boost by increasing the wastegate duty cycle.

Of course by this time, the leak seals itself off and you are now into an overboost condition.....which may be setting off your limp mode if it's high enough.

I was getting that boost undertarget to overtarget cycling on my datalogs
makes sense..Im going to ask my SA to have them check for boost leaks. Thanks for the advice guys.
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      05-31-2009, 08:32 PM   #124
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Have you changed the stock DVs with Forge ones?

I had the same issue...thought it was leak but it was one of the DVs that stucks open for some reason.
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      05-31-2009, 08:39 PM   #125
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Have you changed the stock DVs with Forge ones?

I had the same issue...thought it was leak but it was one of the DVs that stucks open for some reason.
Mind if I ask what your symptoms were?
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      05-31-2009, 08:39 PM   #126
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Have you changed the stock DVs with Forge ones?

I had the same issue...thought it was leak but it was one of the DVs that stucks open for some reason.
Oxi, Ive always wanted to but im worried about the dealer making a big deal about it and start thinking Im modding it.
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      05-31-2009, 08:44 PM   #127
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Do you have DV's fotios?
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      05-31-2009, 08:50 PM   #128
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Do you have DV's fotios?
no...My warranty is up soon so I will get them.
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      05-31-2009, 09:37 PM   #129
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no...My warranty is up soon so I will get them.
Just get the black ones ASAP they look awesome. There's nothing dealer can do to void your warranty if you take out your tune for service. If you worry about DV then I assume you take out the DCI for service too?

My car always runs great with zero limp mode, and I only have BMC filter + scoops, and RR midpipes.
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      05-31-2009, 10:05 PM   #130
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Question - Would this seem OK....
Stage 3 UT 90 % Rev 1 non-canbus
Mods DCI, AR Catless, AA FMIC, Forge DV,stock exhaust, 94 Octane basically sea level.
Any opinions are welcomed as I have yet to do it,,, thanks
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      05-31-2009, 10:21 PM   #131
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Question - Would this seem OK....
Stage 3 UT 90 % Rev 1 non-canbus
Mods DCI, AR Catless, AA FMIC, Forge DV,stock exhaust, 94 Octane basically sea level.
Any opinions are welcomed as I have yet to do it,,, thanks
The stock exhaust is going to be a bottleneck in the system. Even though you have all the other mods, it's still going to restrict flow. So that map may be too aggressive. But you can go ahead and try it. Then try Stg 1 and 2 and see which is the fastest. You have datalogging capability so it's easy to do 50-120mph tests (closed track of course) and compare the times between different maps.

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      05-31-2009, 10:23 PM   #132
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fotios- It should be easy to track down what is going on with your car. I think that it starting to happen with the new maps either suggest that you have had a leak (since boost rise is quicker now) or that something else just suddenly cropped up coincidentally. What are the exact codes you are throwing?

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