First Mod: Headers or Shark Injector?

[UdubBadger]

I went single as M3 has one stock one in section 1.

Got mine on eBay. Off brand JR25 I think. I'm sure it's same stuff. $40


Goin' HAM mobile

[TigerTater]

So after getting back my ECU from Eurocharged for tune update as well as cat delete code I ended up with some codes. In the process of installing headers I did the SAP delete, no point in having it as I have not cats, but I ended up with a code P2430 (secondary air pump fault), duh. I would hate to have to re-install something that is of no use to my engine now, but if the code reappears I might have to, as all work around include coding which I asked Eurocharged about and they said they did not do for the SAP. Next one was a P0041 (O2 Sensor Signals Swapped Bank 1, Sensor 2/Bank 2, Sensor 2), I explicitly labeled the O2 sensors when I was removing re-installing, and Im almost 100% sure I have them in the correct spots. I have read elsewhere that these codes would pop up on peoples care who have never even touched their exhaust systems. Lastly I ended up with a P0171 and P0174 (Fuel system too lean, bank 1 and 2), I have read that this means unmetered air or restricted fuel. I just recently replaced my fuel filter so I can't think its this, I also re-examined my air-box, and all connections making sure that it is all snug without leaks prior to the MAF. I had the codes cleared, and they have not come back as of yet....Im wondering how the Eurocharged tune works with the rear O2 sensors and If I would have needed to clear the codes anyways after the re-tune. Any input is appreciated!

[UdubBadger]

I think I remember getting those swap codes as well as the lean codes too. Try driving a few days worth (50 miles) and see if they stay.


Goin' HAM mobile

[TigerTater]

Resurrection. Do y'all think I should put the 2 AR 25s in the first resonator position or the second, closer to the muffler?


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[mbeckel]

Resurrection. Do y'all think I should put the 2 AR 25s in the first resonator position or the second, closer to the muffler?


Sent from my iPhone 13

I'd do the first position

Sent from in the bushes

[UdubBadger]

first for sure

[TigerTater]

I'd do the first position

Sent from in the bushes

first for sure

Why closer to the headers vs the closer to the muffler? Just curious? Seth have you finished your setup? Do y'all think it will still be loud enough?...I've grown used to the growl.


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[mbeckel]

Why closer to the headers vs the closer to the muffler? Just curious? Seth have you finished your setup? Do y'all think it will still be loud enough?...I've grown used to the growl.


Sent from my iPhone 13

Should be just fine. Shouldn't make it much quieter. The reason for the first position is for the same reason the headers add so much power compared to a solid catback. Most of the power robbing back pressure happens in the early parts of your exhaust system. By freeing up the flow early allows the car to run more efficient

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[UdubBadger]

Why closer to the headers vs the closer to the muffler? Just curious? Seth have you finished your setup? Do y'all think it will still be loud enough?...I've grown used to the growl.


Sent from my iPhone 13

because of the power gains and you also want to kill the rasp as soon as you can and let the frequency of the sounds after it carry for some distance to get it sounding exotic. i did an ar25 in the stock spot in section 1 on my car.

[UdubBadger]

and yea it'll be loud. the ar25 doesnt kill volume necessarily, but it kills some rasp.