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-   -   !! E46 M3 EBAY Header DYNO Tested !! (http://forum.e46fanatics.com/showthread.php?t=539004)

Tonester 01-18-2008 04:22 AM

!! E46 M3 EBAY Header DYNO Tested !!
 
Installed headers on Dec 28th, I drove the car over 200 miles and finally scheduled an appointment to get my car dyno'd at SP Engineering.

Installation was a breeze, Header lined up w/ ease. Longer studs were not needed since I purchased new OEM gaskets took about 3hours to do everything including welding the o2 simulator in and extending the o2 sensor harness.


I do not have software. Only mods are BMC filter, Streamline arm, Ebay header... EVERYTHING else is stock.

Went into dyno and the results are as follows...

My Car | 78,000 Miles | Black Ceramic coated header ordered from Ebay
Bone Stock: Max POWER= 258.8 | Max TORQUE= 229.7
BMC + Streamline arm + Ebay header: Max POWER= 279.6 | Max TORQUE= 235.4

Edzilla's car | 45,000 Miles | JVT header ordered from SP Engineering
Gruppe M intake, Gruppe M Muffler, Ebay header: Max POWER= 291.2 | Max TORQUE= 242.3

Video of Edzilla's dyno run - http://www.youtube.com/watch?v=NI3JB9kL2Ww


Maximum gain of 24.5hp and 18.5trq at the wheels from 6500rpm-8000 rpms give or take 2-3hp.

Average gain of 20hp and 13trq at the wheels all the way through the powerband.

I could not compare my previous run from the last time I dynoed b/c I have removed my Eisen Sec2 and Eisen Race Muffler. So for most consistant comparison I overlayed it w/ my bone stock run.

So for about $250 you can have an extra 20-25 horses to the wheels. :thumbsup2::thumbsup2::shiftdriv

http://img.photobucket.com/albums/v4...spec1/dyno.jpg

versace7866 01-18-2008 04:23 AM

how was the install of the ebay headers?

Tonester 01-18-2008 04:25 AM

Quote:

Originally Posted by Tonester (Post 7249834)
Installed headers on Dec 28th, I drove the car over 200 miles and finally scheduled an appointment to get my car dyno'd at SP Engineering.

Installation was a breeze, Header lined up w/ ease. Longer studs were not needed since I purchased new OEM gaskets took about 3hours to do everything including welding the o2 simulator in and extending the o2 sensor harness.

:read::P

versace7866 01-18-2008 04:26 AM

Quote:

Originally Posted by Tonester (Post 7249850)
:read::P

whoopsy..past my bed time..haha
did you ceramic coat it? i'd be worried about longevity..even supersprint headers break..

Tonester 01-18-2008 04:31 AM

I didn't coat it.. i got the coated ones from ebay... I wanted to keep engine bay temps lower.

I'm not too worried about longevity for $100... plus SP does TIG welding if there was ever a problem. =D

versace7866 01-18-2008 04:38 AM

Quote:

Originally Posted by Tonester (Post 7249875)
I didn't coat it.. i got the coated ones from ebay... I wanted to keep engine bay temps lower.

I'm not too worried about longevity for $100... plus SP does TIG welding if there was ever a problem. =D

how much does SP charge to install headers if you know..
just wondering

Tonester 01-18-2008 04:39 AM

I installed my own, I don't know how much they would charge.. give them a call and talk to Ed.

CJPatel 01-18-2008 07:17 AM

Great thread. I am going to seriously consider this.

Gotta read up on it though and call my aftermarket guy to see how much for the install.

SamXp 01-18-2008 07:38 AM

Did you do the o2sim and resistor for the heater element? Or did you just use the heater element from your oem O2 sensors?

Great results, by the way! 20hp!!

Tp///M3 01-18-2008 08:25 AM

Wow, that's very good hp gain.:thumbsup: To the OP, it's nice to see the number on the dyno but how is it on the road test?

TM3Vert 01-18-2008 09:30 AM

Tp//M3 just curious are those 18's you got on the car ? looks sweet

Tp///M3 01-18-2008 09:59 AM

Quote:

Originally Posted by TM3Vert (Post 7250459)
Tp//M3 just curious are those 18's you got on the car ? looks sweet

No, they're 19's. Thanks.

TM3Vert 01-18-2008 10:14 AM

With a tune youll definitly complete your M, you should pick up a few more hp. Nice post and good dyno numbers. Thanks Tp//M3

DTRUONG_112 01-18-2008 10:21 AM

nice numbers. Def good bang for the buck.

JiX 01-18-2008 10:38 AM

Nice bro! I wonder if it will pass CA smog...

NSM 01-18-2008 10:52 AM

Awesome results. Does anyone have a link to these headers?

JetBlackE46 01-18-2008 10:55 AM

isn't 258rwhp kind of low for stock?

NSM 01-18-2008 10:55 AM

To the OP...

How do the headers sound with the stock exhaust set up?

dave12345 01-18-2008 11:21 AM

ur stock power was kinda low, but still even if it was a 10hp gain thats impressive

post/pm me the sellers name.. im looking into doing headers and exhaust in the future

NSM 01-18-2008 12:17 PM

Yes please post up the ebay sellers ID. There are over a 1000 headers for this car on ebay and I can't tell the difference between the ones you got and the absolutely horrible ones.

Thanks!


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