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Old 02-22-2013, 08:04 AM   #1
freddy121389
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DGM 301whp 335wtq

Default Opensource Gurus! Question

Good morning everyone, I have a quick question that I'm trying to figure out and I figured this would be the first place I would start. I recently switched to a Torque Performance stage 3 tune.

2011 WRX Mods:
Process West TMIC
Forge BPV
Cobb Catted DP
DW65C fuel pump
Grimmspeed EBCS
NGK 1 step colder spark plugs
Grimmspeed AOS
AEM Intake

I'm using a tactrix cable and rom raider to tune my car. The tune that I have on the car now has the boost set to 20psi. My car only sees a max of 18.72 psi according to manifold relative pressure in logs (I would upload them and post but I'm at work and google docs is blocked , I'll post later). I'm also running slightly rich. My question is about boost set in romraider and actual boost seen. When I was just with a Cobb DP, AEM intake and a tune I saw 19.3 psi according to manifold relative pressure (Tune set at 19psi).

This is just for learning purposes, I'm testing for boost leaks tomorrow and getting the map revised once my wideband comes in. What I'm thinking is the reason why I'm not seeing the 20+ psi that the map I have on the car now is set at is because of pressure drop from the larger TMIC? The car pulls great, I get no knock. According to my MAF I'm actually pulling in 20g/s more air at peak rpm than my stage 2 so I've probably gained about 15-20whp over just my DP and intake tune with the stock TMIC. Either that or I'm completely wrong and I do have a boost leak but my car holds that 18.72 psi consistantly at WOT leading me to believe there must be something more because wouldn't the car adjust to get to that 20psi even if I had a very minor leak? I've even driven at partal throttle to see if it holds low amounts of boost consistantly and it seems to. Again just trying to learn. The issue will get solved. I'm bored at work and curious and couldn't find anything on the internet/nasioc.
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Old 02-22-2013, 02:01 PM   #2
02nismokiller
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Maybe you have a leak since its not reaching full boost and you also said its slightly rich... How do you know it's rich if you got no wideband?
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Old 02-22-2013, 02:16 PM   #3
freddy121389
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Quote:
Originally Posted by 02nismokiller View Post
Maybe you have a leak since its not reaching full boost and you also said its slightly rich... How do you know it's rich if you got no wideband?
Tuner said so based of of my IDCs
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Old 02-22-2013, 05:32 PM   #4
freddy121389
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Old 02-22-2013, 08:05 PM   #5
nfm
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Quote:
Originally Posted by freddy121389 View Post
Tuner said so based of of my IDCs
Hmm is your MAF scaled/Intake tuned? You have a really nice setup, why not spend $150 for a good wideband? http://www.ebay.com/itm/INNOVATE-384...c33822&vxp=mtr

As for not hitting more boost, you adjusted WG duty cycle right? If you have a leak and are forcing turbo to boost more than it wants, be careful not to overspin the turbine.
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Old 02-23-2013, 12:50 AM   #6
freddy121389
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I think I figured it out. I think the BPV is opening at WOT. I'm going to swap in a stiffer spring tomorrow and see if that works. Wideband is in the mail along with a BFM cable so I can log on romraider
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Old 02-23-2013, 08:47 AM   #7
wrexTran
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other than Tactrix cable is there anything that would work for quick tunning? i just need to disable some CEL codes
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Old 02-23-2013, 09:21 AM   #8
SeeeeeYa
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Before you blame the BOV, consider your compensations.

I'm pretty sure it has not been hot where you live lately. If your temps have been in the range it has been here your temp comps, alone, will reduce your boost that much. This is due to the ECU trying to keep power levels even. If you had logs from warmer times on the same setup you could reference you would likely note that your g/sec is very close, despite your boost being lower.

In short, don't change a thing until it get over 60F, or you risk issues you don't want. Slightly lower boost when it's colder out is way better than too much boost once its hot.

Also, as for the pressure drop of a TMIC, your PW has less drop than your OEM one, which will give you more, not less, pressure all things equal.
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Old 02-23-2013, 03:17 PM   #9
bspec
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Try logging 4 byte manifold relative pressure.
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Old 02-23-2013, 06:12 PM   #10
BlazeRex
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Definetely verify with a wideband. Is it the OTS TP map youre running?
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Old 02-23-2013, 06:23 PM   #11
john 1badSTI
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Quote:
Originally Posted by SeeeeeYa View Post
Before you blame the BOV, consider your compensations.

I'm pretty sure it has not been hot where you live lately. If your temps have been in the range it has been here your temp comps, alone, will reduce your boost that much. This is due to the ECU trying to keep power levels even. If you had logs from warmer times on the same setup you could reference you would likely note that your g/sec is very close, despite your boost being lower.

In short, don't change a thing until it get over 60F, or you risk issues you don't want. Slightly lower boost when it's colder out is way better than too much boost once its hot.

Also, as for the pressure drop of a TMIC, your PW has less drop than your OEM one, which will give you more, not less, pressure all things equal.
^^^^^^THIS---He hit it on the head --your iat comp tables are probably limiting your wgdc since the air is cooler right now.
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Old 02-23-2013, 07:34 PM   #12
freddy121389
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Quote:
Originally Posted by SeeeeeYa View Post
Before you blame the BOV, consider your compensations.

I'm pretty sure it has not been hot where you live lately. If your temps have been in the range it has been here your temp comps, alone, will reduce your boost that much. This is due to the ECU trying to keep power levels even. If you had logs from warmer times on the same setup you could reference you would likely note that your g/sec is very close, despite your boost being lower.

In short, don't change a thing until it get over 60F, or you risk issues you don't want. Slightly lower boost when it's colder out is way better than too much boost once its hot.

Also, as for the pressure drop of a TMIC, your PW has less drop than your OEM one, which will give you more, not less, pressure all things equal.

Ahhh I did not know that the ecu did this. I figured it would always go to 20 psi. Thanks for the input. I haven't done any revisions on my map since I'm waiting on a wideband and BFM cable in the mail. I've been bugging Eric at TP too but he said I might have a small leak since the needle on my boost gauge vibrated at WOT. I changed my bpv spring to a slightly stiffer one and now boost definitely comes on sooner and hits the full 20psi although it was definitely warmer today compared to when I did those first logs. So it may have been a combination of both. But this is good knowledge to know for the future! Thanks for the help, I really do appreciate it.
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Old 03-19-2013, 09:37 PM   #13
freddy121389
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Quick Log of 2nd-3rd gear pull, didn't have time for anything else but had my laptop with me. Saw -1.5 FLKC how bad is this? https://docs.google.com/file/d/0B14A...it?usp=sharing
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Old 03-20-2013, 11:07 PM   #14
masayver
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Quote:
Originally Posted by freddy121389 View Post
Quick Log of 2nd-3rd gear pull, didn't have time for anything else but had my laptop with me. Saw -1.5 FLKC how bad is this? https://docs.google.com/file/d/0B14A...it?usp=sharing
I would send your logs to Eric. I had the same issues with my stage 3 tune and it took about 7 revisions before he worked out some of the FLKC I was experiencing.
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Old 03-24-2013, 10:14 AM   #15
2bfi
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Quote:
Originally Posted by bspec View Post
Try logging 4 byte manifold relative pressure.
Try the solution above. One of the manifold parameters limits readings to 18.72 psi. Once I changed it, everything read properly. I don't have access to my files now, and can't remember what I logged.
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Old 03-24-2013, 11:39 AM   #16
freddy121389
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DGM 301whp 335wtq

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I ended up getting an access port and getting protuned at agile auto
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