[mike@x-ph.com]

Wagner Tuning just released a 300 CEL B58 catted downpipe with HJS cats.

This is great news for users with stock , stage 1 or piggyback tunes (which do not clear the CEL code). This downpipe with HJS cats will not throw any CEL while still providing greater air flow than stock.

Please be aware, Wagner Tuning now offer 3 different downpipes for the B58:Catless, catted with 200 CEL, Catted with 300 CEL (HJS Cats)

Downpipe Kit with HJS-ECE-300CPSI Racing catalyst for BMW M140i 340i & 440i

• made out of high quality stainless steel 1.4301 (SS304)
• complete Ø3,5 and adapter for stock exhaust
• HJS (ECE approval) 300CPSI EU6 Racing Metal Catalytic Converter
• 100% perfect fit, replace OEM
• less thermal load on the turbocharger
• more power by reducing back pressure
• significantly more torque

Air flow chart with all Wagner Tuning downpipe & stock

[Isj]

what is the inlet size? is it bigger, same or smaller than the akrapovic downpipe?

[mike@x-ph.com]

Originally Posted by Isj

what is the inlet size? is it bigger, same or smaller than the akrapovic downpipe?

The pipes looks like its 4.5", the connection has to be the same as stock for it to fit

[ntj]

Hey Mike,

Any sound clips of this on an F22? What sort of gains might this provide on an untuned M240i?

[mike@x-ph.com]

Originally Posted by ntj

Hey Mike,

Any sound clips of this on an F22? What sort of gains might this provide on an untuned M240i?

Hi,
I do not have any sound clips, the 300 will be a very mild upgrade over stock.
You will only notice the difference on cold start and wide open throttle, even then it wont be much.

The gains should be about 10-15 HP

[ntj]

Originally Posted by mike@x-ph.com

Hi,
I do not have any sound clips, the 300 will be a very mild upgrade over stock.
You will only notice the difference on cold start and wide open throttle, even then it wont be much.

The gains should be about 10-15 HP

Thanks Mike. If my primary goal is a sound upgrade (paired with an MPE) without triggering any CEL's, are there any products you would recommend that I take a look at?

[mike@x-ph.com]

Originally Posted by ntj

Thanks Mike. If my primary goal is a sound upgrade (paired with an MPE) without triggering any CEL's, are there any products you would recommend that I take a look at?

Depends on how loud you want it, you might get a better value by going with the CG Precision downpipe.

The 300 CEL option is for users that want most of the power without much of the sound

[Solid67]

Originally Posted by mike@x-ph.com

Depends on how loud you want it, you might get a better value by going with the CG Precision downpipe.

The 300 CEL option is for users that want most of the power without much of the sound

Have you or do you know anyone that has installed the 300 CEL option and can verify that their CEL did not come on? So if I am reading the chart right, the 300 CEL flows more air than the 200 CEL? If you say the 300 CEl is somewhat quiet, how is the 200 CEL? How much more hp/tq would you see by going catless? - sorry for all the questions.

[mike@x-ph.com]

Originally Posted by Solid67

Have you or do you know anyone that has installed the 300 CEL option and can verify that their CEL did not come on? So if I am reading the chart right, the 300 CEL flows more air than the 200 CEL? If you say the 300 CEl is somewhat quiet, how is the 200 CEL? How much more hp/tq would you see by going catless? - sorry for all the questions.

No CEL with HJS cats, the 200 CEL will flow better than 300 CEL