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Old 10-20-2008, 05:04 PM   #1
putz
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Default Very Basic 20g set up, and Dyno Graph

So, I Got tuned, and I think I got a problem somwhere?

so here is the list of mods,

06wrx tr 25,000 miles
Agency Power header, uppipe, down pipe, all wrapped
Tanabe Cat Back
SPT SRI
GMS Turbo Inlet
Stock Bypass Valve
Td06 8cm 20g internal wastgate 14.5 lbs spring
helix 800cc injectors
walbro 255
perrin BCS
Turbo XS TMIC
pimp pink Kartboy exhaust hangers!!!



possable problems
-perrin bcs
-spt sri
-exhaust leak
-boost leak????? (I don't think so.... but?)

so what can I rule out as causing the timing to get pulled like this?
and what should I change before I go back for anouther round so I can Give Ronnie all he needs to make me a monster!!!!!




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Old 10-20-2008, 05:31 PM   #2
putz
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BUMP FOR MY AWEFULL NUMBERS!!!

come on guys what do you think about the iradic boost?
tapering to 15 psi?

any ideas as to what is not working?
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Old 10-20-2008, 05:35 PM   #3
saab-on-the-cobb
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Quote:
Originally Posted by putz View Post
BUMP FOR MY AWEFULL NUMBERS!!!

come on guys what do you think about the iradic boost?
tapering to 15 psi?

any ideas as to what is not working?
Looks like it's not holding boost, maybe?

Did you pressure-test the system?

SOTC
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Old 10-20-2008, 05:42 PM   #4
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Plot looks like ass but the overall numbers on a Mustang are very nice. I'm not sure what your crying about there??

You should be running a GM BCS or Prodrive 3- Port.

I vote Boost leak and unless they did a PDI (boost leak test) there is no way you can say no.
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Old 10-20-2008, 05:52 PM   #5
putz
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could be boost leak, so.... but the tuner was saying that he had to lay off the boost because the ecu kept pulling timing? so I think it looks like boost leak because he had to boost less since the ecu was pulling timing?

does it look like boost spike at the 35000 rpm line? if so would boost spike cause an ecu to pull timing?
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Old 10-20-2008, 05:54 PM   #6
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bump for awesome OP spelling.
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Old 10-20-2008, 05:55 PM   #7
putz
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bump for awesome OP spelling.
thanks for the bump!
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Old 10-20-2008, 06:47 PM   #8
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Well The ecu could be pulling timing for a number of reasons. 1 is noise sometimes the knock sensor thinks its hearing knock but its just over sensative. Maybe its going to rich/lean in the begining doesn't really seem to be but, the afr does move up right where your knock is heard. What is peak boost? Got any logs?
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Old 10-20-2008, 08:12 PM   #9
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It's not timing look at the graph, troughs & peaks in boost match those in torque which match those in power.
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Old 10-20-2008, 08:30 PM   #10
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Quote:
Originally Posted by 2ndGearFling View Post
bump for awesome OP spelling.
A lot of people don't spell perfectly on the forums bceause tehy dno't crae and you can still understand what they are saying. But good of you to point that out mr spelling teacher.
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Old 10-20-2008, 08:50 PM   #11
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Who tuned the car? What ecu is it running?
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Old 10-20-2008, 09:16 PM   #12
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as far as not holding boost, could be your IWG, could be your Perrin EBCS

my Perrin BCS only lasted 5500 miles, conked out this weekend while tuning it, Hallman PRO on it now and it holds boost , I could NEVER get it to hold with the Perrin, just my experience with it, boost was not erratic but just not able to hold.

maybe your tuner will give it a shot with a MBC to rule that out?
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Old 10-20-2008, 10:08 PM   #13
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slightly off OT, if you go with a 20G in the 06' do you need to put new injectors in? I have gathered the stokers flow pretty well. What about 18G?
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Old 10-20-2008, 10:49 PM   #14
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A lot of people don't spell perfectly on the forums bceause tehy dno't crae and you can still understand what they are saying. But good of you to point that out mr spelling teacher.
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Old 10-20-2008, 10:53 PM   #15
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slightly off OT, if you go with a 20G in the 06' do you need to put new injectors in? I have gathered the stokers flow pretty well. What about 18G?

for a 20g i would deff recommend upping the injectors, as for an 18g, it isnt mandatory, but still limits your potential
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Old 10-21-2008, 12:08 AM   #16
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Originally Posted by DSM_Outback View Post
It's not timing look at the graph, troughs & peaks in boost match those in torque which match those in power.
+1. It looks like boost overshoots the target boost levels significantly and then the turbo dynamics are overactive at that point and overcorrects the boost downward, at which point the car is now under the target and tries to correct itself back upward. Not sure why your tuner didn't recognize and correct this right away. After that it's a bit hard to tell what is going on with the timing from looking at the graph, but before you do anything else you need to get the WGDC and turbo dynamics setup to properly control boost in the midrange.
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Old 10-21-2008, 01:29 AM   #17
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tuner needs to do a better job at tuning the turbodynamics, this is not unusual.

when boost swings wildly up and down, it's hard to map a smooth timing curve.
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Old 10-21-2008, 12:38 PM   #18
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are the perrin bcs that hard to control? can the stock ecu manage interupt style bsc?
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Old 10-21-2008, 04:44 PM   #19
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my tuner also does not like the perrin ebcs. he was able to tune it and smooth it out but it did not hold boost to redline. i swapped in a mbc and he was able to make smoother, better power to redline with more timing
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Old 10-21-2008, 05:00 PM   #20
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Originally Posted by socalLGT View Post
+1. It looks like boost overshoots the target boost levels significantly and then the turbo dynamics are overactive at that point and overcorrects the boost downward, at which point the car is now under the target and tries to correct itself back upward. Not sure why your tuner didn't recognize and correct this right away. After that it's a bit hard to tell what is going on with the timing from looking at the graph, but before you do anything else you need to get the WGDC and turbo dynamics setup to properly control boost in the midrange.
Quote:
Originally Posted by benw View Post
tuner needs to do a better job at tuning the turbodynamics, this is not unusual.

when boost swings wildly up and down, it's hard to map a smooth timing curve.
Putz, I said this our local forum, but these guys hit it on the head. I'm not sure if you're having mechanical problems, but you most certainly are having boost issues. See if you can get RS to give you a little more tuning time with the stock BCS or a GMBCS. I would bet that they left your turbo dynamics tables stock.
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Old 10-21-2008, 05:03 PM   #21
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Take it to a differnt tuner............bottom line. Something is not right with your current tune.
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Old 10-21-2008, 05:38 PM   #22
putz
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NAW... I heart RS motors.... when you go to a tuner you should take their advice, if they tell you to get a gmbcs, then you (or I) should have gotten a gmbcs...

It's not right for me to have gone against advice and expect that he would be familiar with this part and how to tune with it.
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Old 10-21-2008, 10:40 PM   #23
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Get the gmbcs if you go get it your self its cheap i dunno like 40 bucks or something maybe cheaper can't remember. But VERY good part to say the least...
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Old 10-22-2008, 04:47 AM   #24
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Perrin, GM, Prodrive... they all tune the same. You just have to know how to manipulate the turbo dynamics tables to get it just right.
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Old 10-22-2008, 08:14 AM   #25
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Quote:
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NAW... I heart RS motors.... when you go to a tuner you should take their advice, if they tell you to get a gmbcs, then you (or I) should have gotten a gmbcs...

It's not right for me to have gone against advice and expect that he would be familiar with this part and how to tune with it.
That's making excuses. If someone can tune a car, they can tune a car regardless of what parts you have on it (assuming they are all in functioning condition).

The SRI has a small inner diameter than the stock intake, so that's not helping matters. Your wastegate actuator may need adjustment. You could have a boost leak. The boost spikes could be heat soaking your TMIC.

There are a lot of possibilities and the best way to figure out what is holding you back is to look at what is happening while the car is being tuned. I would expect that whoever tuned the car should be able to tell you what is going on. If they couldn't, I would question their ability.

It's easy to tune a car when it's working. One thing that will separate great tuners from average ones is teh ability to see when problems are happening and how to isolate them.
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