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Old 08-27-2009, 11:43 AM   #1
oxox55
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Chapter/Region: RMIC
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got it
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Last edited by oxox55; 09-20-2009 at 02:45 PM.
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Old 08-27-2009, 11:52 AM   #2
medamullet
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knowing the specs on your car would help out.
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Old 08-27-2009, 12:01 PM   #3
oxox55
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ya sorry- I guess that would help. 02 5spd, stock td04, helix uppipe, bbr bellmouth dp, injen ses 3 inch cat back, hallman mbc, cobb sf intake, cobb heat sheild, perrin after maf hose. 80k miles. I think thats it.
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Old 08-27-2009, 12:32 PM   #4
oxox55
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Also I'm in Ogden I think elevation is aroud 4500 ft
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Old 08-27-2009, 12:36 PM   #5
bhhamblin
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your AFRs seem fine. Thats about what mine are.
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Old 08-27-2009, 02:01 PM   #6
JokerDMX
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Can you post up a log?
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Old 08-27-2009, 02:52 PM   #7
HamFist
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I don't see a Walbro 255 or 565 injectors on your list. Get some more fuel capacity in there if you didn't already.

Your stock turbo and intercooler are going to hold you back for three reasons: heat, heat, and heat. The turbo makes a lot of it. The intercooler doesn't remove enough of it, and at our altitude heat sticks around longer (less air to absorb the heat.)

I also think your timing is off a bit if you are tuning around detonation. The heat issue affects how much timing you can run. Fatten your fueling in the midrange. I hate the idea of using too rich of a fuel mix to cool off the combustion chambers, but you're sort of stuck doing that on pump gas.

You have an extensive airflow mod list and NO fueling mods. Start there and maybe add a set of colder plugs.
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Old 08-27-2009, 03:34 PM   #8
Not-EWRX
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Why do you have a MBC on a tuned car?
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Old 08-27-2009, 03:50 PM   #9
oxox55
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Quote:
Originally Posted by HamFist View Post
I don't see a Walbro 255 or 565 injectors on your list. Get some more fuel capacity in there if you didn't already.

Your stock turbo and intercooler are going to hold you back for three reasons: heat, heat, and heat. The turbo makes a lot of it. The intercooler doesn't remove enough of it, and at our altitude heat sticks around longer (less air to absorb the heat.)

I also think your timing is off a bit if you are tuning around detonation. The heat issue affects how much timing you can run. Fatten your fueling in the midrange. I hate the idea of using too rich of a fuel mix to cool off the combustion chambers, but you're sort of stuck doing that on pump gas.

You have an extensive airflow mod list and NO fueling mods. Start there and maybe add a set of colder plugs.
I did forget I do have an sti fuel pump- I bought the car with the mods allready on. Im planning on upgrading to a larger turbo next year so Im going to do fuel system then. I'm just trying to get a nice safe, fun tune until then
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Old 08-27-2009, 03:51 PM   #10
oxox55
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Quote:
Originally Posted by Not-EWRX View Post
Why do you have a MBC on a tuned car?
the 16 bit ecus dont seem to have a problem running a mbc's. It makes tuning boost a lot easier
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Old 08-27-2009, 04:15 PM   #11
Not-EWRX
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Quote:
Originally Posted by oxox55 View Post
the 16 bit ecus dont seem to have a problem running a mbc's. It makes tuning boost a lot easier
Who's making your maps? The stock BCS isn't really made to handle high boost at this altitude.
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Old 08-27-2009, 05:14 PM   #12
oxox55
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Quote:
Originally Posted by Not-EWRX View Post
Who's making your maps? The stock BCS isn't really made to handle high boost at this altitude.
I am tuning myself. once in a while it will spike 17 psi in the dead of winter, but most of the time Im only hitting a max of 16.2 psi. I know higher elevations will make the turbo ineffective above a certain point. I have logged the maf G/S to see @ which psi raising boost becomes pointless. @ 17 psi my g/s max at 191- @ 18 psi im only hitting 184
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