[Xenny]

Is anyone here running only a downpipe? I'm interested only in getting an awesome exhaust sound, and not so much for performance. Not really interested in a tune and then having to get an aftermarket chargepipe either.

I recall an old post awhile ago of someone else that only got a downpipe for some better throttle response, but I cannot find it via search...

Will there be any problems with air fuel mixture, etc, running only a downpipe? Would I have to get an aftermarket chargepipe anyways just in case?

Thanks all

[ocN55]

You can run the downpipe only without a tune, you will just get a CEL on the dash. I think it might prevent you from going into sport or sport+ mode.

If you don't want to tune then I'd suggest getting the CANBus Module by BMS, that will clear the CEL from the DP among other features.

[mike@x-ph.com]

You can run downpipes on a stock car without any problems, only problem will be the the CEL light

Downpipe on its own will get you a better sound and a small bump in performance

If you run JB4 with map 1 with the downpipes, you will not need a CP and it will take care of the CEL for you

[amw896]

Originally Posted by ocN55

You can run the downpipe only without a tune, you will just get a CEL on the dash. I think it might prevent you from going into sport or sport+ mode.

If you don't want to tune then I'd suggest getting the CANBus Module by BMS, that will clear the CEL from the DP among other features.

these lights can restrict sport+!?

[ocN55]

Originally Posted by amw896

these lights can restrict sport+!?

Any sort of light indicating a malfunction locks you in comfort from what I've seen. Even when I had a low tire pressure light in the winter, I couldn't go into sport mode.

[amw896]

Originally Posted by ocN55

Any sort of light indicating a malfunction locks you in comfort from what I've seen. Even when I had a low tire pressure light in the winter, I couldn't go into sport mode.

thanks for the heads up. I was considering this path also...I guess tune is pretty much required if u go downpipe...

[ocN55]

Originally Posted by amw896

thanks for the heads up. I was considering this path also...I guess tune is pretty much required if u go downpipe...

Get the CANBus module... It's not a tune but will delete the CEL and give you other features like a boost gauge.
http://www.burgertuning.com/f_series...odule_BMW.html

[amw896]

Originally Posted by ocN55

Get the CANBus module... It's not a tune but will delete the CEL and give you other features like a boost gauge.
http://www.burgertuning.com/f_series...odule_BMW.html

I have the scan tool device that goes in the odb port and gives me gauges and stuff. It has a section that scans for CELs but I'm not sure if it clears them.

[ocN55]

Originally Posted by amw896

I have the scan tool device that goes in the odb port and gives me gauges and stuff. It has a section that scans for CELs but I'm not sure if it clears them.

That has nothing to do with anything lol

The module I linked you stays in the OBD port and will auto clear the CEL from the downpipe. You don't do it manually.

[amw896]

Originally Posted by ocN55

That has nothing to do with anything lol

The module I linked you stays in the OBD port and will auto clear the CEL from the downpipe. You don't do it manually.

loool....what I meant is it possible to clear downpipe CELs with one of these odb scantools. I hear what u are saying though!

[Xenny]

before I go bother BMS, can anyone here verify that the jb4 or canflap module only autoclears certain tuner codes like the downpipe CEL, and not other CEL's that could be serious?

http://www.1addicts.com/forums/showp...2&postcount=20

[bryan_G01]

wagner catted down pipe threw no codes so far.

Sounds is just a little above stock, but pair that with a muffler delete and it sounds very angry.

[chutak]

Running the Fabspeed catted downpipe (F30) and no CEL since installed 6 months ago. I'd say it sounds quite a bit more aggressive than stock, especially on cold starts.

[mike@x-ph.com]

Originally Posted by bryan_f22

wagner catted down pipe threw no codes so far.

Sounds is just a little above stock, but pair that with a muffler delete and it sounds very angry.

Nice, post a sound clip

[Mywifes335]

Originally Posted by ocN55

That has nothing to do with anything lol

The module I linked you stays in the OBD port and will auto clear the CEL from the downpipe. You don't do it manually.

Yeah... Scan tool will cancel the CEL but drive a but it'll come right back on again.

Ocn55 is correct.

[BentZero]

If all you're going for is a bit more exhaust note why not just put the money into the BMW performance exhaust? You're pretty close to the cost when compared to a DP and canbus module.

[Xenny]

Originally Posted by BentZero

If all you're going for is a bit more exhaust note why not just put the money into the BMW performance exhaust? You're pretty close to the cost when compared to a DP and canbus module.

already got it want more

[ocN55]

Originally Posted by Xenny

already got it want more

Try a resonator delete. Super cheap and makes a slight difference. It may satisfy the craving for more sound, for now...

[BentZero]

Originally Posted by Xenny

already got it want more

:| You said downpipe only......lol. Well then yeah, either get a louder exhaust or DP or resonator delete. All will help.

[Fabspeed Motorsport]

Our Sport Cat Downpipe is definitely something to check out! I ran it on my M235i as my only mod for awhile before betting the Muffler Bypass Exhaust. It was a great bump in performance and sound! The best part about it was no CEL! Check it out on our website here.

[mike@x-ph.com]

Originally Posted by Fabspeed Motorsport

Our Sport Cat Downpipe is definitely something to check out! I ran it on my M235i as my only mod for awhile before betting the Muffler Bypass Exhaust. It was a great bump in performance and sound! The best part about it was no CEL! Check it out on our website here.

+1 for the fabspeed downpipes, quality product

[crbalch]

Just ordered my sport cat downpipe from Fabspeed Motorsport , can't wait to get it in!