Coated Vs. Non-Coated Downpipes

Foofighterr · 04-13-2009, 10:10 AM

I was just wondering if there are any major differences between the RR Coated and non-coated downpipes?

I would only assume that the main reason for getting coated is for protection from rocks chipping it?

Citizen Z · 04-13-2009, 10:30 AM

Coated dps = waste of money for buyer, extra $$$ for seller. IMHO.

///M1 · 04-13-2009, 11:15 AM

Depends what the coating is. If it is ceramic, it is all about heat reduction. With that said, I don't see this as a major issue on the 135i. I debated long whether to JetHot (http://www.jet-hot.com/) coat my Supersprint headers on the M5, there I think it makes more sense given the increase in temps (and it is a V8 engine afterall) despite a $400 charge. In the 135i application I wouldn't bother.

frimmelnojerz · 04-13-2009, 11:48 AM

No coating. Someone somewhere was talking about that coating beginning to chip.

eunosracr · 04-13-2009, 02:38 PM

A ton of the coating gets scraped off during the install anyways. Why bother?

miro2296 · 04-13-2009, 02:44 PM

yea don't do it! save your $$$

///M1 · 04-13-2009, 02:45 PM

OK, we need to be clear - is this true ceramic coating or just a paint job with some thermal heat reducing paint? If the latter, don't even bother. Only the former provides meaningful reduction in operatng temps (which may be a good thing as the engine is really crammed in the little space there is under the hood.

Foofighterr · 04-13-2009, 04:13 PM

According to the Riss Racing site they are coated in "Stealth Ceramic" which I assume just means black ceramic.

rcracer_tx · 04-14-2009, 08:15 PM

Quote:

Originally Posted by Foofighterr

According to the Riss Racing site they are coated in "Stealth Ceramic" which I assume just means black ceramic.

I believe that us referring to that fact that it is a matte black ceramic coating, but I'm sure that anthony or adam can give you more info.

They have a forum for customer questions at rissracing.net

ar design · 04-17-2009, 06:36 PM

Quote:

Originally Posted by ///M1

OK, we need to be clear - is this true ceramic coating or just a paint job with some thermal heat reducing paint? If the latter, don't even bother. Only the former provides meaningful reduction in operatng temps (which may be a good thing as the engine is really crammed in the little space there is under the hood.

Our ceramic coating is a TRUE ceramic coating - we send our pipes out to a company that does NOTHING but ceramic coatings.... Helps reduce underhood temps a bit. YOu wont have any issues with rock chips, as downpipes are 90% covered/protected.

Riss Racing · 04-17-2009, 07:04 PM

Quote:

Originally Posted by ar design

Our ceramic coating is a TRUE ceramic coating - we send our pipes out to a company that does NOTHING but ceramic coatings.... Helps reduce underhood temps a bit. YOu wont have any issues with rock chips, as downpipes are 90% covered/protected.

Ours is ceramic as well. We send all of our products out too a company that does nothing but coating for race applications. Thanks.

ar design · 04-17-2009, 07:13 PM

Quote:

Originally Posted by Riss Racing

Ours is ceramic as well. We send all of our products out too a company that does nothing but coating for race applications. Thanks.

2fast4utoo! · 04-18-2009, 11:23 AM

Guys, a good coat on down pipes involves much more than protection from rocks or anything...

It involves keeping temperture down significantly.In our case since the DP's are under the car don't make a big difference but on cars wich the DPs annd manifold are exposed on the engine bay this involves a significant drop in temperture.

Also I've read since the tempertures are kept contained inside the part itself this help in produce more HP.

Please take a look at jet-hot.com witch they concentrate on coatings only both for every day driven cars and racing applications as well.

jtsherri · 04-18-2009, 12:27 PM

I had my cp-e pipes ceramic coated; however, there are mixed reviews on whether having this done is a good thing or a bad thing.

A close friend of mine (who is near-genius, in my book) recently sent over an article regarding these types of coatings and when they are and are not useful. The jury is still out on downpipes; however, they did argue that this *may* be detrimental to perform. Reason being: keeping the heat in the pipes means longer cooling times. If the pipes are able to cool faster, the air gets denser along the way. By keeping the heat IN, it has an opposite affect.

I have no regrets having mine done, but it's really hard to say whether I'm seeing any gains (or losses) through doing so.

04-13-2009, 10:10 AM	#1
Foofighterr Future 135i Owner 3 Rep 45 Posts Drives: 2009 Lancer GTS Join Date: Dec 2008 Location: Canada iTrader: (0)	Coated Vs. Non-Coated Downpipes I was just wondering if there are any major differences between the RR Coated and non-coated downpipes? I would only assume that the main reason for getting coated is for protection from rocks chipping it? __________________ Tyler S.
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04-13-2009, 10:30 AM	#2
Citizen Z Alpine Master 109 Rep 1,310 Posts Drives: '08 135i AW Sport Join Date: May 2008 Location: Kansas iTrader: (1)	Coated dps = waste of money for buyer, extra $$$ for seller. IMHO. __________________ Alpine White with Taupe Leather 135i, Sports Package, Heated Seats, Comfort Access, iPod Adapter Fastness: http://www.1addicts.com/forums/showthread.php?t=252727
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04-13-2009, 11:15 AM	#3
///M1 Brigadier General 273 Rep 3,164 Posts Drives: Many Join Date: Feb 2009 Location: North of 7K RPM iTrader: (1) Garage List 2020 BMW M2 CS [0.00] 1994 Audi RS2 Avant [0.00] 2021 Audi RS6 Avant [0.00] 1988 BMW E30 M3 [0.00] 2011 BMW 1///M [0.00] 2017 BMW F80 M3 30 ... [0.00] 2018 Porsche 991.2 GT3 [0.00] 2015 Porsche Macan ... [0.00] 1998 Porsche 993 C4S [0.00] 1994 Lancia Delta I ... [0.00] 2008 Audi RS4 [0.00]	Depends what the coating is. If it is ceramic, it is all about heat reduction. With that said, I don't see this as a major issue on the 135i. I debated long whether to JetHot (http://www.jet-hot.com/) coat my Supersprint headers on the M5, there I think it makes more sense given the increase in temps (and it is a V8 engine afterall) despite a $400 charge. In the 135i application I wouldn't bother. __________________ *2011 BMW E82 1///M: AW, all options; Renntech, Akrapovic, Forge, P3, RevoZ CF bits, many mods 1988 BMW E30 M3: Hennarot, S14, stock 2018 Porsche 991.2 GT3: PtS, CXX, LWBS, PCCB 1998 Porsche 993 C4S: Zenith Blue, last aircooled widebody, Bilstein PSS10, Fister II + Fabspeed exhaust 2008 Audi B7 RS 4*: Sprint Blue, Audi Exclusive Euro Bucket Interior, Premium+Titanium, many mods
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04-13-2009, 11:48 AM	#4
frimmelnojerz Captain 23 Rep 692 Posts Drives: Montego blue 135i Join Date: Jun 2008 Location: Bayonne, NJ iTrader: (0)	No coating. Someone somewhere was talking about that coating beginning to chip.
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04-13-2009, 02:38 PM	#5
eunosracr Colonel 157 Rep 2,231 Posts Drives: a car Join Date: Oct 2007 Location: here iTrader: (4)	A ton of the coating gets scraped off during the install anyways. Why bother?
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04-13-2009, 02:44 PM	#6
miro2296 Colonel 57 Rep 2,251 Posts Drives: '08 Montego Blue BMW 135i Join Date: Nov 2008 Location: Round Rock, TX iTrader: (1)	yea don't do it! save your $$$ __________________ ------------------------------------- BMW 135i/6 Speed/Montego Blue/Formula One Ceramic Tint/JB4 G4/AA Sport Intercooler/19 inch Iconz 880Z(19X8.5 & 19X10)/PSS 225/35 & 265/30/E93 M3 front sway bar/TRW front and rear Control Arms/BMS Drop In Filter/Dinan Exhaust/BlackLines/Upgraded \\\M RSFB
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04-13-2009, 02:45 PM	#7
///M1 Brigadier General 273 Rep 3,164 Posts Drives: Many Join Date: Feb 2009 Location: North of 7K RPM iTrader: (1) Garage List 2020 BMW M2 CS [0.00] 1994 Audi RS2 Avant [0.00] 2021 Audi RS6 Avant [0.00] 1988 BMW E30 M3 [0.00] 2011 BMW 1///M [0.00] 2017 BMW F80 M3 30 ... [0.00] 2018 Porsche 991.2 GT3 [0.00] 2015 Porsche Macan ... [0.00] 1998 Porsche 993 C4S [0.00] 1994 Lancia Delta I ... [0.00] 2008 Audi RS4 [0.00]	OK, we need to be clear - is this true ceramic coating or just a paint job with some thermal heat reducing paint? If the latter, don't even bother. Only the former provides meaningful reduction in operatng temps (which may be a good thing as the engine is really crammed in the little space there is under the hood. __________________ *2011 BMW E82 1///M: AW, all options; Renntech, Akrapovic, Forge, P3, RevoZ CF bits, many mods 1988 BMW E30 M3: Hennarot, S14, stock 2018 Porsche 991.2 GT3: PtS, CXX, LWBS, PCCB 1998 Porsche 993 C4S: Zenith Blue, last aircooled widebody, Bilstein PSS10, Fister II + Fabspeed exhaust 2008 Audi B7 RS 4*: Sprint Blue, Audi Exclusive Euro Bucket Interior, Premium+Titanium, many mods
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04-13-2009, 04:13 PM	#8
Foofighterr Future 135i Owner 3 Rep 45 Posts Drives: 2009 Lancer GTS Join Date: Dec 2008 Location: Canada iTrader: (0)	According to the Riss Racing site they are coated in "Stealth Ceramic" which I assume just means black ceramic. __________________ Tyler S.
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04-18-2009, 11:23 AM	#13
2fast4utoo! Private First Class 26 Rep 164 Posts Drives: M4 Join Date: Mar 2009 Location: Puerto Rico iTrader: (0)	Guys, a good coat on down pipes involves much more than protection from rocks or anything... It involves keeping temperture down significantly.In our case since the DP's are under the car don't make a big difference but on cars wich the DPs annd manifold are exposed on the engine bay this involves a significant drop in temperture. Also I've read since the tempertures are kept contained inside the part itself this help in produce more HP. Please take a look at jet-hot.com witch they concentrate on coatings only both for every day driven cars and racing applications as well.
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04-18-2009, 12:27 PM	#14
jtsherri Major 144 Rep 1,262 Posts Drives: TBD Join Date: Aug 2008 Location: Metro Detroit, MI iTrader: (14) Garage List 2008 135i [10.00]	I had my cp-e pipes ceramic coated; however, there are mixed reviews on whether having this done is a good thing or a bad thing. A close friend of mine (who is near-genius, in my book) recently sent over an article regarding these types of coatings and when they are and are not useful. The jury is still out on downpipes; however, they did argue that this may be detrimental to perform. Reason being: keeping the heat in the pipes means longer cooling times. If the pipes are able to cool faster, the air gets denser along the way. By keeping the heat IN, it has an opposite affect. I have no regrets having mine done, but it's really hard to say whether I'm seeing any gains (or losses) through doing so. __________________ -Jason My review(s): cp-e™ Cat Back Exhaust, cp-e™ SS 3" Downpipes, TPLSM3 Custom Fiberglass Subwoofer Enclosure, P3 BMW 135 Vent Integrated Digital Interface
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