hey guys do you think having a boost leak would actually........

1SeriousPig · 09-06-2005, 07:49 PM

cause me to spike 2 high? because i have a manual boost controller only setup, and i spike to 21 but hold 16, tell me if you think this is normal. i also have a code, charge pressure negative deviation. when i was spiking 25 and holding 20-21 i got another code which was charge pressure positive deviation. tell me what you think. thanks

Mike2kS4 · 09-06-2005, 07:52 PM

Not really.

Seems ambient has affected your MBC settings. Turn it down.

I'd run MBC in parallel and set the MBC to the max of the spike if I were you. Well, if you need a k04 upgrade excuse for the wife... leave it as is.

1SeriousPig · 09-06-2005, 07:57 PM

i have a boost leak?

Mike2kS4 · 09-06-2005, 07:59 PM

List your mods please and maybe I can say more

SoSlow · 09-06-2005, 08:02 PM

1SeriousPig · 09-06-2005, 08:07 PM

Mike2kS4 · 09-06-2005, 08:17 PM

I'm assuming you're running GIAC X. You're getting those codes because of one thing. Your requested/actual boost is based on a curve. Your actual curve differs from your requested curve in the low end, because it's too low, Now you have a code.

What's that mean to you? Very little, because you're running an MBC solo.

What I'd do: Run somewhere in-between where you get the negative and positive deviation. I'd say spike at 23 or so and taper to 19. That setting should be money.

You're welcome

1SeriousPig · 09-06-2005, 08:20 PM

lemieux@curbside · 09-07-2005, 04:40 AM

or should i go to mbc only ?

Mike2kS4 · 09-07-2005, 08:42 AM

Keep it as it is

09-06-2005, 07:49 PM	#1
1SeriousPig Junior Member Account #: 85521 Join Date: Dec 2004 Posts: 535	hey guys do you think having a boost leak would actually........ cause me to spike 2 high? because i have a manual boost controller only setup, and i spike to 21 but hold 16, tell me if you think this is normal. i also have a code, charge pressure negative deviation. when i was spiking 25 and holding 20-21 i got another code which was charge pressure positive deviation. tell me what you think. thanks __________________ _______________________________

09-06-2005, 07:52 PM	#2
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,104	I think that's serious, pig. Not really. Seems ambient has affected your MBC settings. Turn it down. I'd run MBC in parallel and set the MBC to the max of the spike if I were you. Well, if you need a k04 upgrade excuse for the wife... leave it as is. __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

09-06-2005, 07:57 PM	#3
1SeriousPig Junior Member Account #: 85521 Join Date: Dec 2004 Posts: 535	well these are hybrids, do you think they would still blow like this? and also does that dtc mean... i have a boost leak? __________________ _______________________________

09-06-2005, 07:59 PM	#4
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,104	Ahhh... Well, you should list your mods in your pig (sig) somewhere... List your mods please and maybe I can say more __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

09-06-2005, 08:02 PM	#5
SoSlow AudiWorld Senior Member Account #: 90988 Join Date: Apr 2005 Location: iraq Posts: 4,578	no..but it would cause your CF's to be unusually high @ 16psi and sucky timing cough __________________ hairy nipples

09-06-2005, 08:07 PM	#6
1SeriousPig Junior Member Account #: 85521 Join Date: Dec 2004 Posts: 535	hey i sent my mod list to your email address that was provided __________________ _______________________________

09-06-2005, 08:17 PM	#7
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,104	Got it. More info inside: I'm assuming you're running GIAC X. You're getting those codes because of one thing. Your requested/actual boost is based on a curve. Your actual curve differs from your requested curve in the low end, because it's too low, Now you have a code. What's that mean to you? Very little, because you're running an MBC solo. What I'd do: Run somewhere in-between where you get the negative and positive deviation. I'd say spike at 23 or so and taper to 19. That setting should be money. You're welcome __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

09-06-2005, 08:20 PM	#8
1SeriousPig Junior Member Account #: 85521 Join Date: Dec 2004 Posts: 535	hey thanks, ill try it tommorow __________________ _______________________________

09-07-2005, 04:40 AM	#9
lemieux@curbside AudiWorld Super User Account #: 47312 Join Date: Dec 2002 Posts: 17,783	hehe i was going to ask you (i forgot) if mbc in par. is fine with my setup or should i go to mbc only ? __________________ ************************************************ ************************************* "it's a B5 S4 ,it may break down, but its far enough ahead, by the time its fixed, you still haven't caught up." -best line i've heard AUDI B5 S4 detail info (pdf file) that everyone should read and have saved on his computer AUDI B5 RS4 study guide detail info (pdf file) FATS database VAG-COM LOCATOR ASP Hands down the "BESTEST" tuner out there.

09-07-2005, 08:42 AM	#10
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,104	If you want to be slow :x Keep it as it is __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

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