Down Pipes - The short answer?

sparoz · 11-30-2011, 05:51 PM

Quote:

Originally Posted by RaihaX

Does the akra dp fit on RHD without modification though?

Apparently yes, and if you don't want to risk it, Andrew at SouthernBM can probably supply them at a reasonable price. The only thing is I am not sure how in stock they are

.

dh58 · 11-30-2011, 06:02 PM

Quote:

Originally Posted by sparoz

Where have you been for the last 2 weeks - the most anticipated exhaust and dp release for the 1M. Akrapovic

. Expensive exhaust, but the DP is very reasonable.

..the usa on a business trip lol

sparoz · 11-30-2011, 06:03 PM

Quote:

Originally Posted by dh58

..the usa on a business trip lol

You might want to pick those up in the US while you are there.

dh58 · 11-30-2011, 06:11 PM

Quote:

Originally Posted by sparoz

I have no confirmed data with the sizing of the tube and its effects of power. However, the accepted effect is you have less power down low and gain it at the top end if you go for a larger size. Also, the stated rationale from one of the tunings for the 1M is that we don't need 3" unless you are looking to upgrade your turbo at a later date.

The point of dp is to gain hp, by removing the cats, to have a less restricted flow. Stock dp has 40-50% flow, catless is 100% and a 100 cell high flow cat is 95% flow. HJS makes a 90% flow euro 5 compliant cat as well, but each cat alone is > $500 US and 100 Cell ones are > $700 per cat.

So what is the gain at all from DPs?

You can hold a higher boost?

dh58 · 11-30-2011, 06:12 PM

Quote:

Originally Posted by sparoz

You might want to pick those up in the US while you are there.

Thats why I'm asking. I could always have my guys ship it over later if need be.

Stuart@BMRAutowerkes · 11-30-2011, 07:30 PM

Quote:

Originally Posted by dh58

So what is the gain at all from DPs?

You can hold a higher boost?

freer flowing exhaust = more power...

Catless DPs will typically add 20-30 rwkw

Gumball · 11-30-2011, 07:34 PM

Quote:

Originally Posted by bmroxm5

freer flowing exhaust = more power...

Catless DPs will typically add 20-30 rwkw

More like 20-30 RWHP

I got 15rwkw gain.

Zuzu · 11-30-2011, 07:38 PM

Quote:

Originally Posted by dh58

Thats why I'm asking. I could always have my guys ship it over later if need be.

Just throw them in your luggage..

dh58 · 11-30-2011, 09:49 PM

Quote:

Originally Posted by Gumball

More like 20-30 RWHP

I got 15rwkw gain.

Still, nothing to be sneezed at..

Quote:

Originally Posted by Zuzu

Just throw them in your luggage..

lol, I might. Will see if I can get a set while i'm here. I generally never buy new so looking to get these used.

Gumball · 11-30-2011, 09:52 PM

Its a really good upgrade, you can run more boost safely and the turbo whistle sounds awesome.

Just dont do it if you are worried about warranty etc. Personally I could not give a stuff. If something breaks I will buy it in from the USA.

dh58 · 11-30-2011, 09:58 PM

Quote:

Originally Posted by Gumball

Its a really good upgrade, you can run more boost safely and the turbo whistle sounds awesome.

Just dont do it if you are worried about warranty etc. Personally I could not give a stuff. If something breaks I will buy it in from the USA.

hmmm... this is something I am worried about..

Why do they say you can run more boost safely?

Gumball · 11-30-2011, 10:08 PM

Reduces back pressure. Having cats straight after the turbos is not great for their efficiency.

If using JB4 u can use Map 2 safely - 14.5 psi. Map 1 is 13 psi.

I worried about warranty for the first 2.5 years but then decided to bugger it. Keep the car and mod it and if it stuffs up its my problem.

sparoz · 11-30-2011, 10:13 PM

Not too worried about warranty. If something breaks that they claim to be caused by the mod - you just pay for it. If they charge you an unreasonable amount, you just take it elsewhere. I don't think anything has been broken so far apart from mods on n54.

dh58 · 11-30-2011, 10:18 PM

Will they still do the free servicing on your car if you get mods?

Interesting about being able to hold the higher psi...

sparoz · 11-30-2011, 10:24 PM

Quote:

Originally Posted by dh58

Will they still do the free servicing on your car if you get mods?

Interesting about being able to hold the higher psi...

I couldn't see there is any reason why they won't, but I never had the terms and conditions.

dh58 · 11-30-2011, 10:30 PM

Quote:

Originally Posted by sparoz

I couldn't see there is any reason why they won't, but I never had the terms and conditions.

i guess my free services end at 50k anyway

RaihaX · 11-30-2011, 11:22 PM

Quote:

Originally Posted by dh58

i guess my free services end at 50k anyway

Is a slippery slope my friend, be careful I know....

Kiwi Peter · 12-01-2011, 03:32 AM

Quote:

Originally Posted by pcockley

Well Skycat what do you say?!

Hi there Paul
Well the jig is on the way will do some testing when i get my car.

Zuzu · 12-02-2011, 02:17 AM

Quote:

Originally Posted by skycat

Hi there Paul
Well the jig is on the way will do some testing when i get my car.

Sounds good Peter..keep us posted.

So your car will be the proto type for your Advan performance catless DP's..

Have you purchased a 135i/335i ??

MrBlonde · 12-02-2011, 02:27 AM

OP you seem very concerned about your warranty. Perhaps mods are not for you?
If it keeps you awake at night then it's not worth it.

ItsHectic · 01-16-2012, 09:34 PM

Are high flow cats legal?

I heard its a massive fine like $10,000 or something for not having a cat?

Colt · 01-16-2012, 09:44 PM

Quote:

Originally Posted by JustMe

Are high flow cats legal?

I heard its a massive fine like $10,000 or something for not having a cat?

Depends where you are located...

In Maryland I have never had a problem with aftermarket HFCs on any of my cars during inspection/pulled over/anything

11-30-2011, 09:52 PM	#32
Gumball Lieutenant 12 Rep 599 Posts Drives: A45 Join Date: Sep 2008 Location: Sydney iTrader: (0)	Its a really good upgrade, you can run more boost safely and the turbo whistle sounds awesome. Just dont do it if you are worried about warranty etc. Personally I could not give a stuff. If something breaks I will buy it in from the USA.
	Appreciate 0 Quote

11-30-2011, 10:08 PM	#34
Gumball Lieutenant 12 Rep 599 Posts Drives: A45 Join Date: Sep 2008 Location: Sydney iTrader: (0)	Reduces back pressure. Having cats straight after the turbos is not great for their efficiency. If using JB4 u can use Map 2 safely - 14.5 psi. Map 1 is 13 psi. I worried about warranty for the first 2.5 years but then decided to bugger it. Keep the car and mod it and if it stuffs up its my problem.
	Appreciate 0 Quote

11-30-2011, 10:13 PM	#35
sparoz Brigadier General 191 Rep 4,848 Posts Drives: VO 1///M; Macan Turbo Join Date: Jun 2008 Location: Sunshine Coast iTrader: (0)	Not too worried about warranty. If something breaks that they claim to be caused by the mod - you just pay for it. If they charge you an unreasonable amount, you just take it elsewhere. I don't think anything has been broken so far apart from mods on n54. __________________ Macan S Diesel - Carrera White Macan Turbo - White 1///M - Valencia Orange
	Appreciate 0 Quote

11-30-2011, 10:18 PM	#36
dh58 Major 108 Rep 1,075 Posts Drives: 135i Join Date: Aug 2010 Location: Bunker in Sydney iTrader: (1)	Will they still do the free servicing on your car if you get mods? Interesting about being able to hold the higher psi...
	Appreciate 0 Quote

12-02-2011, 02:27 AM	#42
MrBlonde Colonel 122 Rep 2,695 Posts Drives: Audi TTRS, M Coupe, 1299 Join Date: Jan 2008 Location: Merewether iTrader: (0)	OP you seem very concerned about your warranty. Perhaps mods are not for you? If it keeps you awake at night then it's not worth it. __________________ .-=[ Kenny ]=-. 1999 BMW M Coupe 10.775 @ 134.35 mph w/1.600 60' (Best 136.07 mph) 25th August 2004. +2010 X5 35D+ Check out the 1Addicts Drag Racing Standings and Drag Racing 101.
	Appreciate 0 Quote

01-16-2012, 09:34 PM	#43
ItsHectic But your honour it's my Affluenza I swear! 58 Rep 533 Posts Drives: at a reasonable speed Join Date: Aug 2011 Location: NSW iTrader: (0)	Are high flow cats legal? I heard its a massive fine like $10,000 or something for not having a cat? __________________ 135i M Sport DCT. BSM/Oyster/GP trim. FBO Cobb, Bilstein EDC coilovers, M3 bushings, PSS. Knowledge of the Tapa Tapa Tapa street race start.
	Appreciate 0 Quote