BMW e92 M3 Pre-cat delete & remap at AReeve Performance - ** E92 M3 screaming on the rolling road ** 

It sounds civilised in the video, it’s a monster in the flesh 😈 shall get a proper video of it out and about as soon as all is fixed 👌

With that 2-pipe modification removing the other catalysts would make mine too much, lucky then numbers haven’t complained at this stage lol

😂😂

Thanks 👍 hopefully be back together next week and get the old girl on Surrey Rolling road to see what she puts out in January 😬 At first I thought it was too loud with the 2 pipe modification & pre-cat delete but it has really grown on me, sounds really evil above 4,000rpm (proper drive out video to come soon)

@@stoneautomotive let me know when, I'll bring mine and we can compare results!

It really depends how “by the book” your MOT tester is, mines just had an MOT just before having the work carried out so that’s next years problem lol.. The problem is MOT rules now state the emissions system on the exhaust should not be modified from original specification.

@@stoneautomotive do you reckon they have a schematic of every cars exhaust system? If not I reckon you might be ok with testers who don't know the e92? Hopefully it's not a ballache as I tried decat on the E46 for a year or two and now I've put them back due to all the faffing...

The problem is you’ll have lambda sensor, straight pipe then another lambda sensor, that’s the give away as you wouldn’t be monitoring gas changes in a straight pipe hence why you can see a catalyst has been removed. The only 2 real options are remove the second lambda sensor + mounting boss and route it to after the secondary cats or create a dummy shell that goes over the pre-cat delete pipe to make it “look” like a catalyst. Agree it can be a ball ache

You can find modders who will remove the inside of the primary cat by cutting open the top and then welding in a pipe to essentially test pipe it. Mine was done and with an evolve intake, i hit 457bhp on surrey rolling road. Figures on my insta @M3_1_YDO

Dave McGarry who do you know that will do this?

There from the F80 M4 - full guide on the channel on how to fit and make them work like factory 😎

@@stoneautomotive thanks I'll definitely have a look at that video

Was booked in with Surrey Rolling road on the 11th April but the booking was cancelled due to Covid-19 😩

@@stoneautomotive Thought so! I'm so curious to know what difference it makes. I'm currently about to get the primary decat done but can't decide if the remap is worth it as well..

The car “feels” great for the pre-cat delete + remap but who knows how much was the map or removing the pre-cat as they were both done at the same time 🤷‍♂️ What I can confirm is having the remap avoided the check engine light & removed the cold start which is worth it in its self as it was a right racket in the morning and spinning the shells up from stone cold.

Hi Justin, best advice is get yourself into an owners group, plenty of people happy to offer advise 👍 www.m3cutters.co.uk is a good one in my opinion With regards to finding a suitable garage that one is tricky and really comes down to what’s available in your area unless your willing to travel.

Get a cheap car to work on. Can't beat practical experience

Areeve supplies and fitted on mine but there are many places that can supply them now 👍

Yes back box has been modified with the “2 pipe” modification

@@stoneautomotive what is a 2 pipe mod?? I keep reading about it and can't seem to find any links to it

@@betterthenyou99 it’s detailed in this video but essentially the rear silencer is cut open and tubes in the back box covered so the exhaust noise increases. 1.5 pipe mod being the smallest change & the 4 pipe being the loudest. 2 pipe seems to be the most popular option

@@stoneautomotive thanks for the break down. I just got a e90 m3 and am trying to figure out an exhaust solution.

👍

Yes - full install video on the channel 👍

Hi Jack, yes it will bring up the light eventually so either code out or instal Lambda extenders 👍