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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > GIAC



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      06-03-2012, 05:49 PM   #1
upss
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GIAC

STAGE 1 can i put downpipe catless or i need downpipe fix
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      06-03-2012, 06:27 PM   #2
roadkillrob
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GIAC Stage 1 leaves the emissions in tact, so you would need the DP fix also.
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2008 E93 335i, GIAC Stage 2, HPF IC, Injen Intake, Defective AR Design DP's with useless cats
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      06-04-2012, 02:33 AM   #3
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You DONT need the DP fix unless you get downpipes. Stage 1 is for fully stock. FMIC strongly recommended.
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      06-04-2012, 05:23 AM   #4
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GIAC does have a "track file" with DP fix...ask for that
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      06-04-2012, 06:27 AM   #5
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thank
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      06-04-2012, 12:04 PM   #6
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Quote:
Originally Posted by upss View Post
STAGE 1 can i put downpipe catless or i need downpipe fix
Stage 1 is for a completely stock car, or one with a DCI. We can also tweak the file a bit for those with an intercooler.

If you are using upgraded downpipes, you will also need an intercooler and DCI for our Stage 2 file. We do offer a "track" Stage 2 file, which is made to be used with catless downpipes.
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      06-09-2012, 01:38 PM   #7
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First post! Probably been answered before but does the Stage 2 track file just clear the code or enable "ready" status over OBDII? Thanks!
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      06-09-2012, 02:28 PM   #8
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Usually flash tunes allow dp fixes with readiness monitors set
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      06-09-2012, 07:09 PM   #9
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Quote:
Originally Posted by daveman View Post
First post! Probably been answered before but does the Stage 2 track file just clear the code or enable "ready" status over OBDII? Thanks!
GIAC any word on this?
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      06-13-2012, 11:36 AM   #10
Thomas@GIAC
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Quote:
Originally Posted by daveman View Post
First post! Probably been answered before but does the Stage 2 track file just clear the code or enable "ready" status over OBDII? Thanks!
The Track file will disable the rear O2 sensors so that there is no check-engine light.
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