Need coating advice! - Subaru Enthusiasts Car Club of the Sierras

chrscott_01 · 2007-08-18, 07:48 AM

Anyone have better than average experience with certain shops? I'm looking to have my header coated while I'm waiting for my AP.

Dean · 2007-08-18, 08:12 AM

I don't think anybody local has the equipment to do the high temp coatings you are probably looking for.

Stock or after market?

I think the consensus is it is a good idea for the thinner tubing based after market ones, but the stock cast ones really don't need it. Now an extrude hone and port match on the stockers may be a good choice if you really have spare money lying around.

Doing anything with the headers is usually one of the last mods before you start spending money on engine internals etc... as they have a very low HP/$ ratio.

Typical power mods from the engine back is more or less:

Access Port
Turbo Back exhaust
Up-pipe
Turbo
Headers
Engine/head work

cody · 2007-08-18, 01:35 PM

Quote:

Originally Posted by chrscott_01

Anyone have better than average experience with certain shops? I'm looking to have my header coated while I'm waiting for my AP.

Crucial Racing will send you coated stock headers in exchange for your cores+$ (not sure of the price). The coating process they use is the best and they come with an EGT bung already drilled. That way you don't have downtime waiting to get them coated.

www.crucialracing.com

I just heat wrapped mine when I was tapping for an EGT and installing an UP. Fun day.

Evo Mike · 2007-08-18, 04:11 PM

hmm. are you looking for like an HPC coating? i think full race does coating jobs.. but are $$$!

chrscott_01 · 2007-08-18, 09:05 PM

OK, so I installed the header up-pipe combo from Meagan today. (on 07 wrx) What can I say, patience is not a virtue of mine

I can always yank it for coating when I have better money. At least I'm honest!

Anyways, I'm kinda stumped. The throttle response is night and day and there is definately a bit more pep. It feels like I'm driving a big cam'ed V8 though! It shakes and idles at like 500rpm now and feels like it's gonna die when I am trying to stop. (it doesn't really die) No CEL, nothing to indicate anything wrong. So why all the shakes? Is this just a werks with a header? Just deal with it? Also, when did the up-pipe start coming cat-less, stock from Subaru!? You can shine a flashlight and look right through mine.

Dean · 2007-08-18, 09:31 PM

Welcome to making power/intake/exhaust/engine mods without tuning.

wrxkidid · 2007-08-18, 09:47 PM

06+ has a catless uppipe.

chrscott_01 · 2007-08-19, 01:39 PM

It runs fine now! No more shakes, still no CEL. Weird! Anyone know why it would do that then stop and run fine? Is this just the ecu playing catch up or something?

A1337STI · 2007-08-19, 09:35 PM

I changed my intake from stock to a short ram, and then back with out tuning.

Then i went to a custom Cat back with out tuning. each time it seemed to hurt the gas millage a tiny bit and made the engine search for the proper idle speed. after 2K miles from my custom cat back my gas millage is the best i've ever had. (25 mpg) and i drive up spooner or up 431 5 times a week.

Sooooo maybe, yes its changing mods with out tuning. eventually the stock ECU parameters will do the best they can, but its not where you want to be with out stock parts.

I would recommend you get a Cobb AP + a tune . try to schedule a tune with Ed from EQ tuning during a Reno Fernley Raceway test & Tune day.

(you can get on a test and tune day as low as $75 !!!)

100_Percent_Juice · 2007-08-19, 09:58 PM

Quote:

Originally Posted by A1337STI

try to schedule a tune with Ed from EQ tuning during a Reno Fernley Raceway test & Tune day.

(you can get on a test and tune day as low as $75 !!!)

Damn I want to get in on that. I know imprezif does too. When are these scheduled for?

A1337STI · 2007-08-20, 09:05 PM

http://www.reno-fernleyraceway.com/s...ent.php?ID=788

Looks like its currently at 175 for a full day, 110 for a half day. I think it was early summer they had the really cheap rates, Maybe just call them up and ask when their cheapest days are for the test and tune. ?

also check with Ed. not sure if a half day would be enough or not. i would think that it would be but i'm no tuner.

I was out there to setup a drift event with skid pad from pro control (event got canceled due to scheduling issues (gp moto race)) But they are really really nice out there and would probably help you out

you may need a track permit, track experience , or some sorta auto racing experience, uhm again, call em up

2007-08-18, 07:48 AM	#1
chrscott_01 EJ18 Join Date: Jan 2007 Location: Reno, NV Posts: 35 Car: 2007 Sub WRX TR Class: None....yet. So I walk into a bar....	Need coating advice! Anyone have better than average experience with certain shops? I'm looking to have my header coated while I'm waiting for my AP.

2007-08-18, 08:12 AM	#2
Dean Señor Cheap Bastarde Real Name: Dean Join Date: May 2003 Location: $99 Tire Store Posts: 9,294 Car: $.04 STI Class: Fast,Cheap & Reliable=STI Deal, did somebody say Deal? Oh, Dean, yeah that's me.	I don't think anybody local has the equipment to do the high temp coatings you are probably looking for. Stock or after market? I think the consensus is it is a good idea for the thinner tubing based after market ones, but the stock cast ones really don't need it. Now an extrude hone and port match on the stockers may be a good choice if you really have spare money lying around. Doing anything with the headers is usually one of the last mods before you start spending money on engine internals etc... as they have a very low HP/$ ratio. Typical power mods from the engine back is more or less: Access Port Turbo Back exhaust Up-pipe Turbo Headers Engine/head work __________________ I am a Commodore PET --- Now get off my lawn you kids...

2007-08-18, 04:11 PM	#4
Evo Mike EJ251 Join Date: Apr 2004 Posts: 513	hmm. are you looking for like an HPC coating? i think full race does coating jobs.. but are $$$! __________________ I Can't Believe My Friends.... Drive WRX's....

2007-08-18, 09:05 PM	#5
chrscott_01 EJ18 Join Date: Jan 2007 Location: Reno, NV Posts: 35 Car: 2007 Sub WRX TR Class: None....yet. So I walk into a bar....	WTF? OK, so I installed the header up-pipe combo from Meagan today. (on 07 wrx) What can I say, patience is not a virtue of mine I can always yank it for coating when I have better money. At least I'm honest! Anyways, I'm kinda stumped. The throttle response is night and day and there is definately a bit more pep. It feels like I'm driving a big cam'ed V8 though! It shakes and idles at like 500rpm now and feels like it's gonna die when I am trying to stop. (it doesn't really die) No CEL, nothing to indicate anything wrong. So why all the shakes? Is this just a werks with a header? Just deal with it? Also, when did the up-pipe start coming cat-less, stock from Subaru!? You can shine a flashlight and look right through mine.

2007-08-18, 09:31 PM	#6
Dean Señor Cheap Bastarde Real Name: Dean Join Date: May 2003 Location: $99 Tire Store Posts: 9,294 Car: $.04 STI Class: Fast,Cheap & Reliable=STI Deal, did somebody say Deal? Oh, Dean, yeah that's me.	Welcome to making power/intake/exhaust/engine mods without tuning. __________________ I am a Commodore PET --- Now get off my lawn you kids...

2007-08-18, 09:47 PM	#7
wrxkidid EJ205 Join Date: Jan 2007 Location: Incline Village, NV Posts: 1,232 Car: 1999 Jeep Grand Cherokee Ltd. 5.7l Class: None :/ Cory, just put a 4g63 in it.	06+ has a catless uppipe. __________________ Mosey down the road.

2007-08-19, 01:39 PM	#8
chrscott_01 EJ18 Join Date: Jan 2007 Location: Reno, NV Posts: 35 Car: 2007 Sub WRX TR Class: None....yet. So I walk into a bar....	Ok fine! It runs fine now! No more shakes, still no CEL. Weird! Anyone know why it would do that then stop and run fine? Is this just the ecu playing catch up or something?

2007-08-19, 09:35 PM	#9
A1337STI EJ205 Join Date: Jan 2006 Location: Reno, NV Posts: 1,840 Car: Impreza and an Impreza Class: AS / CRS PerfStock "pedal on the right"	I changed my intake from stock to a short ram, and then back with out tuning. Then i went to a custom Cat back with out tuning. each time it seemed to hurt the gas millage a tiny bit and made the engine search for the proper idle speed. after 2K miles from my custom cat back my gas millage is the best i've ever had. (25 mpg) and i drive up spooner or up 431 5 times a week. Sooooo maybe, yes its changing mods with out tuning. eventually the stock ECU parameters will do the best they can, but its not where you want to be with out stock parts. I would recommend you get a Cobb AP + a tune . try to schedule a tune with Ed from EQ tuning during a Reno Fernley Raceway test & Tune day. (you can get on a test and tune day as low as $75 !!!) __________________ Fighting uphill battles, one bullet at a time!

2007-08-20, 09:05 PM	#11
A1337STI EJ205 Join Date: Jan 2006 Location: Reno, NV Posts: 1,840 Car: Impreza and an Impreza Class: AS / CRS PerfStock "pedal on the right"	http://www.reno-fernleyraceway.com/s...ent.php?ID=788 Looks like its currently at 175 for a full day, 110 for a half day. I think it was early summer they had the really cheap rates, Maybe just call them up and ask when their cheapest days are for the test and tune. ? also check with Ed. not sure if a half day would be enough or not. i would think that it would be but i'm no tuner. I was out there to setup a drift event with skid pad from pro control (event got canceled due to scheduling issues (gp moto race)) But they are really really nice out there and would probably help you out you may need a track permit, track experience , or some sorta auto racing experience, uhm again, call em up __________________ Fighting uphill battles, one bullet at a time!

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