Will the dealer say anything when they notice the second cat is gone?

 

Yes, they may say "Hey, look at that! The second cat and/or resonator is gone!".

All joking aside, I'm not really sure what you're worried about in that regard.

The law is quite clear in two categories.

1) The unit is downstream of the emissions system, and hence removing it does not violate any federal emissions regulations.

2) The warranty can only be voided for equipment directly following said modification. In fact, they would actually need to prove (by law) that the hypothetical issue was caused by said modification before voiding any such warranty.

You're in the clear if you choose to do this. It's worthwhile for the sound difference.

 

Ah I see. Thanks for the reply. I just had my resonator removed yesterday and there was a noticble difference in sound, however I want to make it a little louder by removing the cat, the shop didn't have a problem with it considering they asked if I wanted the seccond Cat deleted too lol. Do you know if my 2007 r56 would throw any CEL codes?

 

There's no way this can/will throw codes, as it is downstream of the sensors.

Only changing the primary cat can throw CELs.

Quite a few shops have reportedly not wanted to touch this, but the smart ones realize that anything after the second sensor is fair game (and won't get them fined harshly).

 

Haha awesome! Thanks for the replys, maybe I'll stop by agian after work lol

 

You're quite welcome. You'll be surprised by how restrictive that little sucker can be.

 

As soon as I get my r60, I'm yanking out the 2nd cat and resonator and installing a K&N RU-1540. I'm still thinking about the Helix intercooler. Would there be any benefit to an intercooler without a tune? Also do you have any tips on installing the filter directly to the MAF?

 

The MAF is a 2.75" hard pipe joiner. Slip the RU-1540 right onto the neck, tighten the clamp, viola.

The intercooler will net you a few positives without the tune. Namely, keeping the IATs down and preserving power as the temperature rises from sitting still, or plain overheating the stock (tiny) intercooler.

The tune from NM is absolutely the best bang-for-the buck mod for the R60. If you have an automatic model, you'll be limited to Stage 1. I was the guinea pig for a lot of auto torture, not going into that. lol

 

Good thing I got the manual haha.

 

Has anyone done an NM stage 2 and had a dyno pull afterwards? I have stage 1 and am going up to stage 2 in 2 weeks, and am looking for an estimate of what to expect. NM's advertisement is much less than clear.

 

Theta,


Since you got both the tunes, which one do you recommend? I've talked to evolve but I think that'd be a hassle if anything goes wrong with my ECU.

Since you got the auto like me, do you recommend a downpipe with the NM stage 1?

I am gonna delete the 2nd cat but add a resonator since my plan is to add a catless DP. When I spoke to Jerry at NM and some guy at RennTech, they said adding the DP to the automatic would add realistically 8hp and 5 to the wheels.

What's your take?

 

I had my second cat taken out, so I have no resonator or second cat. The sound is pretty amazing for not buying true exhaust, it's louder than I thought but it's not to loud. It has a really nice growl. It's loudest when shifting from 3rd to 4th @4RPM, I'm not sure why people where saying it sounds like crap, it sounds like a JCW but louder, also people who say it has a drone is bull, has no drone what so ever, the only time it's loud is when you get on it. Bare in mind I am talking about my r56.

I did notice driving on the street my monitoring my MPG gage it was a bit high, before it would say 30-40 now it says 50-60 anyone know if deleting the 2nd cat and resonator tampers with MPG whether it get more or less?

 

Rob,

Different worlds, since RENN and I are working on a different platform now (N18JCW/GP). NM was great and easy to work with (Jerry is seriously a great guy).

Note that I traded my Auto in for a manual, as the auto just had too many issues with tuning at higher levels (Stage 1 will be fine). Yes, I do recommend a downpipe - either the Akrapovic or the AR. If you prefer to go catless, you can use the VIP test pipe.

Please note that NM will not turn off the CEL from a downpipe. The AR is reported to not throw codes, but YMMV.

 

Tony, the difference between Stage 1 and Stage 2 is around 30whp.

 

Theta, thanks for responding back. When I spoke to RennTech they said my MINI can still produce the same amount they advertise 230hp/240tq but only thing with the auto trans they will make sure the power comes in a little bit higher at rpm range. I wouldn't produce boost early as if I had a stage 1 NM tune or a manual MINI. I am strongly considering that since if I had NMs tune of 212hp/222tq as they advertise on their website at stage 1.

Any comments to this? I also spoke to Evolve about then tuning my car since they'll be opening a store in the U.S. soon.

 

You would realistically need to have the power come on after 4000 to alleviate the issue. I'm sure that's what they're alluding to.

Depends on your driving style mostly. Won't help MPG, that's for sure.

 

That's correct Theta. They said I'd still get torque early but receive the power down around 4k. I don't think that's gonna make me wine about it but at least I can get more numbers then being stuck with so and so at a Stage 1.

Btw you said you changed cars, so no more Countryman?

 

Auto Countryman All4 was traded for this new one (manual JCW R60).

 

Not gonna lie, pretty jealous! You switched all your mods to the CM JCW? Congrats on the new ride.

 

Yep - all the mods in my sig line are current. Actually added a few since the last R60.

It's fully decked out now mod-wise (nothing else to add except a larger turbo or cams)... looking at adding 14" brakes, but I'm still debating due to the high price....

 

Sounds exciting make sure you post pics unless you put them up in your gallery!

 

You're more than welcome to join the Facebook R60 owner's club (open to all R60 owners) - that's mostly where we all share pics, etc. Other than that, I think I have a few in the JCW section.

http://www.facebook.com/groups/CountrymanOwnersGroup/

 

What is the other intercooler you have?

 

I'm playing with the new Behr intercooler that they're using on the GP.

 

got any photos?

will it fit my 02/2012 build all4?

scott