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-   -   Any 2.8s with headers? (http://forum.e46fanatics.com/showthread.php?t=601468)

SoundOfSpeed 08-19-2008 07:05 PM

Any 2.8s with headers?
 
So I threw on some S52 headers on my dual vanos 2.8 a little while ago and I didn't get the results im lookin for.

Car is running rich to the point where it's throwing codes and the ecu can't cut back on any more fuel.

I'm on a stock tune.



Anyone else run into problems when putting in some headers on a 2.8?

bmw_chuzo 08-20-2008 11:53 PM

I didn't had any problems. no codes, errors.
my motor was the m52tu

KriTiKaL AspecT 08-21-2008 09:13 PM

Sure your o2's are in the corrct banks? Or any good?

Snik 08-21-2008 09:18 PM

so hold on, S52 headers fit on M52TU with no issues, and gains?

Activ3 08-22-2008 06:25 AM

Check your o2 wiring/connections, and if anything have your mech. clear the adaptations.

The OBDII S52 headers work fine on the M52tu/M54, but you need to use the downpipe midsection from the e36, unless you're having a custom exhaust built. You'll also have to extend the o2 wiring if using the e36 exhaust (which I'm assuming the OP did).

Snik 08-22-2008 10:27 AM

Quote:

Originally Posted by Activ3 (Post 8419268)
Check your o2 wiring/connections, and if anything have your mech. clear the adaptations.

The OBDII S52 headers work fine on the M52tu/M54, but you need to use the downpipe midsection from the e36, unless you're having a custom exhaust built. You'll also have to extend the o2 wiring if using the e36 exhaust (which I'm assuming the OP did).

and there are measurable gains from this?

Activ3 08-22-2008 12:14 PM

IMO it's not worth it seeing as you can get a set of eBay headers for ~$150. Before headers were available on eBay, these would've been a cheaper alternative to the brand name headers for our cars.

Snik 08-22-2008 12:24 PM

ah..... but without an aftermarket ECU, how can u run ebay headers with no CEL?

SoundOfSpeed 08-22-2008 11:26 PM

o2 sensors are brand new and wiring is fine. Exhaust is custom from S52 headers back. I've recoded the DME and adaptations ahve been reset. Been trying to figure this out for a little while.

What did you guys do about the cats? I installed a single 2.5" CARB legal Magnaflow cat.

TheRiddle 10-07-2008 01:22 PM

here I am..

bought them on ebay a long ago...

no cats,just the 2nd resonator and a remus muffler....

sounds great, revs better..

and i felt the gain since the 1st km... they said 20hp, for me are 15...:P

and in 2 years of abuse the light engine light pop out only after a trip of 500km on the highway...

240sxplan 10-19-2008 10:03 PM

hmm.. no engine light huh.?? for me too I'm thinking putting in the headers from ebay and deleting the cat and resonater ..

If there is no codes .. I' d be looking for these upgrades soon..

Bimmer Dude Xi 10-19-2008 10:59 PM

Quote:

Originally Posted by 240sxplan (Post 8715920)
hmm.. no engine light huh.?? for me too I'm thinking putting in the headers from ebay and deleting the cat and resonater ..

If there is no codes .. I' d be looking for these upgrades soon..

Replacing the headers will give you codes

BartenderPlease 10-19-2008 11:35 PM

Quote:

Originally Posted by SoundOfSpeed (Post 8405014)
So I threw on some S52 headers on my dual vanos 2.8 a little while ago and I didn't get the results im lookin for.

Car is running rich to the point where it's throwing codes and the ecu can't cut back on any more fuel.

I'm on a stock tune.



Anyone else run into problems when putting in some headers on a 2.8?

There will be a dyno graph of before (stock M52TU - 'cept for a CAI) and after with the only mod being the eBay headers. I'll keep you informed.

Snik 10-20-2008 01:54 AM

Are there any gains to be had from a S52 head? Or cams maybe?

TheRiddle 10-20-2008 06:26 AM

Quote:

Originally Posted by Bimmer Dude Xi (Post 8716216)
Replacing the headers will give you codes

If it happens is given by the different ECU settings (US cars/EURO cars)


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