If you run DPs without an O2 sim..

persian54 · 09-23-2009, 02:30 AM

Other than having the CEL on when you turn off the car, are there any other problems?

I already have a TMPS light on, so a CEL beep wouldn't kill me...

But if it causes some sort of problem... that's a different story

blisstik · 09-23-2009, 02:41 AM

If you had to take the car for SMOG test, you would fail the ODBII test. Other than the annoying light, that's about it.

persian54 · 09-23-2009, 02:51 AM

Quote:

Originally Posted by darklocust

If you had to take the car for SMOG test, you would fail the ODBII test. Other than the annoying light, that's about it.

I won't need smog for a while (2009 car)

and even if I did, I will always pass it... my porsche was leaking oil and it smelled like crap before I had a chance to fix everything but I just had it passed lol
When it comes to stuff like that, knowing people really helps...

but wait, if you had 02 sims it'll pass? really?

Malaka1 · 09-23-2009, 08:28 AM

I am running my car without 02 sims right now, AR Catless downpipes, and I got the CEL and it says "Reduced Power!" but I do not notice the reduced power...it feels more powerful.

JayKay335i · 09-23-2009, 10:25 AM

If you have a CEL light, you automatically fail the test.

john boxter · 09-23-2009, 10:26 AM

oh man you dont want to do that if you run downpipes without an o2 sim your car blows up becareful!! haha

persian54 · 09-23-2009, 11:00 AM

Quote:

Originally Posted by JayKay335i

If you have a CEL light, you automatically fail the test.

Yes, I know that...

but I mean, if you put the O2 sim, and the CEL is off, and they run smog at a shop where you don't know the people.. your car still passes??

persian54 · 09-23-2009, 11:00 AM

Quote:

Originally Posted by john boxter

oh man you dont want to do that if you run downpipes without an o2 sim your car blows up becareful!! haha

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Sniz · 09-23-2009, 11:27 AM

dont do that

just get O2 simms and dont be a cheapo

I believe the car actually does pull timing/power as a result as well.

u fail cat readiness and the ECU gets mad at you.

john boxter · 09-23-2009, 12:25 PM

sniz cool pic

Mike@N54Tuning.com · 09-23-2009, 12:53 PM

Quote:

Originally Posted by persian54

Other than having the CEL on when you turn off the car, are there any other problems?

I already have a TMPS light on, so a CEL beep wouldn't kill me...

But if it causes some sort of problem... that's a different story

BMS carries a downpipe fix that retunes the ECU for high flow downpipes. It's not a sim as the O2 sensors remain connected and fully functional. Without the downpipe fix the ECU will go in to a low timing mode and hurt performance.

Mike

Biddy2 · 09-23-2009, 03:43 PM

Quote:

Originally Posted by Mike@N54Tuning.com

BMS carries a downpipe fix that retunes the ECU for high flow downpipes. It's not a sim as the O2 sensors remain connected and fully functional. Without the downpipe fix the ECU will go in to a low timing mode and hurt performance.

Mike

So do you need o2 sims and the DP fix???
Thanks

persian54 · 09-23-2009, 04:45 PM

Quote:

Originally Posted by Sniz

dont do that

just get O2 simms and dont be a cheapo

I believe the car actually does pull timing/power as a result as well.

u fail cat readiness and the ECU gets mad at you.

Not that I wanted to be cheap lol

If/when i get DP, i WILL get a fix.. but it may be a week or 2 or so because sometimes you can't buy both at the same time, make sense?

and it'll be hard to have a DP in the garage and not want to install them asap

I think you guys can understand that...

persian54 · 09-23-2009, 04:45 PM

Quote:

Originally Posted by Biddy2

So do you need o2 sims and the DP fix???
Thanks

isn't the 02 sim a fix in itself??

Sniz · 09-23-2009, 04:57 PM

Quote:

Originally Posted by persian54

Not that I wanted to be cheap lol

If/when i get DP, i WILL get a fix.. but it may be a week or 2 or so because sometimes you can't buy both at the same time, make sense?

and it'll be hard to have a DP in the garage and not want to install them asap

I think you guys can understand that...

Quote:

Originally Posted by persian54

isn't the 02 sim a fix in itself??

yup sure is

I ran BMW 02 simms for a long time, no issues except for the one time I was a bonehead and forgot to reinstall when I was playing with my old Helix Attache.

Biddy2 · 09-23-2009, 06:03 PM

So wait am confused. You don't need to get bms dp fix! An o2 sim would of been just fine??? So whats the diff between the two. Thanks!

Mr. 5 · 09-23-2009, 06:13 PM

Quote:

Originally Posted by Sniz

dont do that

just get O2 simms and dont be a cheapo

I believe the car actually does pull timing/power as a result as well.

u fail cat readiness and the ECU gets mad at you.

I agree.
Not only will you get a CEL but the ecu will reduce power as well.
Driving a car in reduced power mode is sketchy.

Malaka1 · 09-23-2009, 06:14 PM

Or you can get a Procede and you won't need 02 simulators..

e.n335 · 09-23-2009, 07:34 PM

Quote:

Originally Posted by Malaka1

Or you can get a Procede and you won't need 02 simulators..

Hmm ... Procede in valet mode and O2 simulation active works

?

09-23-2009, 02:30 AM	#1
persian54 Lieutenant General 922 Rep 15,818 Posts Drives: M760/G83M4 Join Date: Jun 2009 Location: The Valley, SoCal iTrader: (298)	If you run DPs without an O2 sim.. Other than having the CEL on when you turn off the car, are there any other problems? I already have a TMPS light on, so a CEL beep wouldn't kill me... But if it causes some sort of problem... that's a different story __________________ From E93 335i to E89 Z4 to E93 M3/E89 Z4 to E350/SL550
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09-23-2009, 02:41 AM	#2
blisstik Lieutenant Colonel 151 Rep 1,677 Posts Drives: E92 Join Date: Jul 2009 Location: California iTrader: (14)	If you had to take the car for SMOG test, you would fail the ODBII test. Other than the annoying light, that's about it.
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09-23-2009, 08:28 AM	#4
Malaka1 General 102 Rep 919 Posts Drives: F30 335i 6MT Black Join Date: Jun 2009 Location: Clearwater, FL iTrader: (6)	I am running my car without 02 sims right now, AR Catless downpipes, and I got the CEL and it says "Reduced Power!" but I do not notice the reduced power...it feels more powerful.
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09-23-2009, 10:25 AM	#5
JayKay335i Banned 189 Rep 5,046 Posts Drives: ///M323 DCT Join Date: Apr 2009 Location: North Dakota; its best DUHHHHHH iTrader: (1)	If you have a CEL light, you automatically fail the test.
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09-23-2009, 10:26 AM	#6
john boxter Captain 35 Rep 763 Posts Drives: 2008 e93 Join Date: Sep 2009 Location: long Island New York iTrader: (3)	oh man you dont want to do that if you run downpipes without an o2 sim your car blows up becareful!! haha
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09-23-2009, 11:27 AM	#9
Sniz Lieutenant General 654 Rep 10,587 Posts Drives: e92 335 - gone // e36 M3 turbo Join Date: Mar 2007 Location: Ellicott City, MD iTrader: (1)	dont do that just get O2 simms and dont be a cheapo I believe the car actually does pull timing/power as a result as well. u fail cat readiness and the ECU gets mad at you. __________________
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09-23-2009, 12:25 PM	#10
john boxter Captain 35 Rep 763 Posts Drives: 2008 e93 Join Date: Sep 2009 Location: long Island New York iTrader: (3)	sniz cool pic
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09-23-2009, 06:03 PM	#16
Biddy2 Banned 1 Rep 76 Posts Drives: 335i Join Date: Sep 2009 Location: Nj iTrader: (0)	So wait am confused. You don't need to get bms dp fix! An o2 sim would of been just fine??? So whats the diff between the two. Thanks!
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09-23-2009, 06:14 PM	#18
Malaka1 General 102 Rep 919 Posts Drives: F30 335i 6MT Black Join Date: Jun 2009 Location: Clearwater, FL iTrader: (6)	Or you can get a Procede and you won't need 02 simulators..
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