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Alpha Trion · 08-19-2012, 09:33 PM

Hey guys,

Finally did the DP's on my car yesterday. All custom (pics soon) and totally cat-less.

Bum dyno LOVES IT
Ear dyno as above!
Car is just violent DTC going spazzo
Car is smelly and i will def install a cat toward the back. 5hr job done and im happy.

QUESTIONS;
1. Is this new set up gonna stuff my O2 sensors? i already chucked a code (engine) but it comes and goes not permanent.
2. I have DCI's and full exhaust done, is map 2 (JB4) the best map to run or is there another?
3. Is intercooler really worth replacing?

Hanging to compare with someone who has the same set up as me but with the AR DP's!

-Elee

pavo335 · 08-19-2012, 10:05 PM

set the jb4 to autoclear codes and try the mew map 5, its pretty good

Alpha Trion · 08-19-2012, 10:14 PM

I got the update last week so whats the specs of map 5?
And i guess I need to hook up the laptop to set the auto clear?

pavo335 · 08-19-2012, 10:25 PM

Quote:

Originally Posted by Alpha Trion

I got the update last week so whats the specs of map 5?
And i guess I need to hook up the laptop to set the auto clear?

map 5 auto tune, for more details there is a sticky on n54, including the steering wheel controls which you can use to set auto code clear. i keep a printout in the car for handy reference

mcmn · 08-19-2012, 10:37 PM

Finally got there eh?

Paul

Alpha Trion · 08-19-2012, 10:52 PM

Thanks Pavo. And yeah Paul only took about a year hahaha

sharkatron · 08-19-2012, 11:03 PM

I'm about to go catless dps too, but having some concerns with the o2 sensors. Fair enough you can clear them with your tune, but if you want to log data, there is no o2 sensor to pick up data

pavo335 · 08-19-2012, 11:05 PM

Quote:

Originally Posted by Alpha Trion

Thanks Pavo. And yeah Paul only took about a year hahaha

I think you should come to wakefield this thursday and really appreciate it on the track

pavo335 · 08-19-2012, 11:07 PM

Quote:

Originally Posted by sharkatron

I'm about to go catless dps too, but having some concerns with the o2 sensors. Fair enough you can clear them with your tune, but if you want to log data, there is no o2 sensor to pick up data

I'm no expert but i thinkyou can still log all that stuff with all the major tunes, all it does is stop the CEL

mcmn · 08-20-2012, 12:52 AM

I know someone who had catless downpipes on his racecar. He was saying you have no issues as the o2 sensors pre and post are still in place and function.

sharkatron · 08-20-2012, 01:18 AM

Really? I always thought the sensors were in the dps? Ah well, you learn something new every day

Alpha Trion · 08-20-2012, 02:01 AM

Wakefield--- no way, not with the way my car handles after switching from RFT's to the soft walls of the Michi pilot super sports. Car handles like a boat. Definitely going to change suspension first!

I found 'that' piece of paper that has all the settings for the JB.

pavo335 · 08-20-2012, 03:07 AM

Quote:

Originally Posted by Alpha Trion

Wakefield--- no way, not with the way my car handles after switching from RFT's to the soft walls of the Michi pilot super sports. Car handles like a boat. Definitely going to change suspension first!

I found 'that' piece of paper that has all the settings for the JB.

Pussy!

Mate you should go now and post a pb then go after the mods and see the change in times. It's not about being THE best. It being YOUR best. Like I say to the kids I don't care if you win but I DO expect you to get better each time!

MMorbo · 08-20-2012, 05:16 AM

Quote:

Originally Posted by Alpha Trion

Hey guys,

Car is smelly and i will def install a cat toward the back. 5hr job done and im happy.

-Elee

probably a stupid question, but don't they have a second set of cats in the mid pipes?

where would you install the other set?

koastal · 08-20-2012, 07:41 AM

Quote:

Originally Posted by pavo335

Pussy!

Mate you should go now and post a pb then go after the mods and see the change in times. It's not about being THE best. It being YOUR best. Like I say to the kids I don't care if you win but I DO expect you to get better each time!

One of the best quotes I've seen. Terrific little track cars that punch well above their weight with tiny outlay. Mad if you own one and don't let it loose occasionally. Goes double for 1M owners

froop · 08-20-2012, 06:03 PM

Quote:

Originally Posted by MMorbo

Quote:

Originally Posted by Alpha Trion

Hey guys,

Car is smelly and i will def install a cat toward the back. 5hr job done and im happy.

-Elee

probably a stupid question, but don't they have a second set of cats in the mid pipes?

where would you install the other set?

I'm on the iphone app so I can't check the model year, but I'm just assuming that the OP has an N55 which only has cats in the DPs and catless midpipes. Only the N54 has both primary and secondary cats.

To add cats he'd probably have to replace the OEM midpipes with aftermarket catted ones.

mcmn · 08-20-2012, 07:01 PM

so you want to remove cats, then add some back again?

The fuel smell isnt that bad after the first few minutes of idle

Jeef Beef · 08-20-2012, 08:14 PM

I'm quite certain has OP an N54 which means he got catless DPs, and has kept his midpipe secondary cats like most of us do.

mcmn · 08-21-2012, 03:26 AM

Quote:

Originally Posted by Jeef Beef

I'm quite certain has OP an N54 which means he got catless DPs, and has kept his midpipe secondary cats like most of us do.

OP does indeed have N54. It's a slow one though

Jeef Beef · 08-21-2012, 05:04 AM

Quote:

Originally Posted by Alpha Trion

Hey guys,

Finally did the DP's on my car yesterday. All custom (pics soon) and totally cat-less.

Bum dyno LOVES IT
Ear dyno as above!
Car is just violent DTC going spazzo
Car is smelly and i will def install a cat toward the back. 5hr job done and im happy.

QUESTIONS;
1. Is this new set up gonna stuff my O2 sensors? i already chucked a code (engine) but it comes and goes not permanent.
2. I have DCI's and full exhaust done, is map 2 (JB4) the best map to run or is there another?
3. Is intercooler really worth replacing?

Hanging to compare with someone who has the same set up as me but with the AR DP's!

-Elee

Forgot to answer questions.

1. Catless DPs will tend to set off codes since there are no cats changing the composition of gases exiting your exhaust. Not much of a worry with a piggy.

2. No idea about JB4, but you can definitely run higher boost.

3. Get meth instead.

I have AR DPs and BMS DCI so I think we're similar.

Alpha Trion · 08-21-2012, 07:05 AM

Slow hey Paul??? Lol only coz it's a vert and heavier than yours! Rolling start line ups when we meet up next :P
Yes I have an N54. Removed the cats with the custom midpipes and no cats in the custom DP's

I will get these pics up when I get time!

Can't wait for next dyno day to compare Jeff.

08-19-2012, 09:33 PM	#1
Alpha Trion Second Lieutenant Drives: 135 Convertible Join Date: Apr 2011 Location: Sydney Australia Posts: 291 iTrader: (0)	DP's now done but have questions... Hey guys, Finally did the DP's on my car yesterday. All custom (pics soon) and totally cat-less. Bum dyno LOVES IT Ear dyno as above! Car is just violent DTC going spazzo Car is smelly and i will def install a cat toward the back. 5hr job done and im happy. QUESTIONS; 1. Is this new set up gonna stuff my O2 sensors? i already chucked a code (engine) but it comes and goes not permanent. 2. I have DCI's and full exhaust done, is map 2 (JB4) the best map to run or is there another? 3. Is intercooler really worth replacing? Hanging to compare with someone who has the same set up as me but with the AR DP's! -Elee
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08-20-2012, 08:14 PM	#18
Jeef Beef Lord Captain Commander Drives: a sleeper Join Date: Oct 2009 Location: Sydney, Australia Posts: 3,023 iTrader: (0)	I'm quite certain has OP an N54 which means he got catless DPs, and has kept his midpipe secondary cats like most of us do. __________________ E82 135i M-sport: SGM/6MT/Black PROcede V5 \| BMS DCI \| AR Catless DPs \| BMW PE \| ER CP \| HKS BOV \| BMW SSK \| KW V1 coilovers \| Dunlop Direzza Star Specs \| GTC-CX Matte Black 18" \| GP Thunder 7500K \| Kerscher CF Lip

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08-19-2012, 10:05 PM	#2
pavo335 Banned Drives: 3.5 wheeler Join Date: Feb 2012 Location: sydney Posts: 2,991 iTrader: (0)	set the jb4 to autoclear codes and try the mew map 5, its pretty good

08-19-2012, 10:14 PM	#3
Alpha Trion Second Lieutenant Drives: 135 Convertible Join Date: Apr 2011 Location: Sydney Australia Posts: 291 iTrader: (0)	I got the update last week so whats the specs of map 5? And i guess I need to hook up the laptop to set the auto clear?

08-19-2012, 10:37 PM	#5
mcmn Lieutenant Drives: MY10 AW 135i Join Date: Jun 2011 Location: Sydney Posts: 544 iTrader: (0)	Finally got there eh? Paul

08-19-2012, 10:52 PM	#6
Alpha Trion Second Lieutenant Drives: 135 Convertible Join Date: Apr 2011 Location: Sydney Australia Posts: 291 iTrader: (0)	Thanks Pavo. And yeah Paul only took about a year hahaha

08-19-2012, 11:03 PM	#7
sharkatron Second Lieutenant Drives: `09 135i Join Date: Mar 2012 Location: Melbourne Posts: 275 iTrader: (0)	I'm about to go catless dps too, but having some concerns with the o2 sensors. Fair enough you can clear them with your tune, but if you want to log data, there is no o2 sensor to pick up data

08-20-2012, 12:52 AM	#10
mcmn Lieutenant Drives: MY10 AW 135i Join Date: Jun 2011 Location: Sydney Posts: 544 iTrader: (0)	I know someone who had catless downpipes on his racecar. He was saying you have no issues as the o2 sensors pre and post are still in place and function.

08-20-2012, 01:18 AM	#11
sharkatron Second Lieutenant Drives: `09 135i Join Date: Mar 2012 Location: Melbourne Posts: 275 iTrader: (0)	Really? I always thought the sensors were in the dps? Ah well, you learn something new every day

08-20-2012, 02:01 AM	#12
Alpha Trion Second Lieutenant Drives: 135 Convertible Join Date: Apr 2011 Location: Sydney Australia Posts: 291 iTrader: (0)	Wakefield--- no way, not with the way my car handles after switching from RFT's to the soft walls of the Michi pilot super sports. Car handles like a boat. Definitely going to change suspension first! I found 'that' piece of paper that has all the settings for the JB.

08-20-2012, 07:01 PM	#17
mcmn Lieutenant Drives: MY10 AW 135i Join Date: Jun 2011 Location: Sydney Posts: 544 iTrader: (0)	so you want to remove cats, then add some back again? The fuel smell isnt that bad after the first few minutes of idle

08-21-2012, 07:05 AM	#21
Alpha Trion Second Lieutenant Drives: 135 Convertible Join Date: Apr 2011 Location: Sydney Australia Posts: 291 iTrader: (0)	Slow hey Paul??? Lol only coz it's a vert and heavier than yours! Rolling start line ups when we meet up next :P Yes I have an N54. Removed the cats with the custom midpipes and no cats in the custom DP's I will get these pics up when I get time! Can't wait for next dyno day to compare Jeff.