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      05-09-2019, 05:01 PM   #1
beastmodeM5
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Bootmod 3 Tune

anyone ran this with OEM spark plugs? Just purchased but after reading through the instruction they highly suggest changing plugs to NGK . I just did my plugs back in October .
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      05-10-2019, 02:38 AM   #2
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I've read that some cars have no problem running stock plugs. I ran a stage 1 with no problem and they had 10k miles on them with stock gap. I think the gapping would be of most importance rather then if it's Bosch or ngk but I'm no expert.
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      05-10-2019, 05:52 AM   #3
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Stock plugs are usually fine with these tunes
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      05-10-2019, 08:15 AM   #4
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i went OST Stage 1 Beta and got Drivetrain malfunction (misfires) went back to stock no issues. So i am changing my Sparks to NGK and gapping them. From what i hear if your sparks are new you will be fine but on a stage 1 without gapping them they will just go bad quicker.
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      05-10-2019, 10:25 AM   #5
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Quote:
Originally Posted by beastmodeM5 View Post
anyone ran this with OEM spark plugs? Just purchased but after reading through the instruction they highly suggest changing plugs to NGK . I just did my plugs back in October .
I have the STG 2 93octane and started with stock plugs at stock gaps because that's what I was told to do by Halim and see if I had misfires first. I had misfires at around 4,200rpm and up so then he told me to get the NGK plugs and gap between .018 - .020. I gapped them the new NGK to .019 and no misfires. It has been good for about a year now.
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      05-12-2019, 01:41 PM   #6
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I have BM3 Stage 1, 93 with stock plugs (67K miles - plugs were changed at 44K miles). It a 2014 with Comp Package, no mods except carbon filters delete and Bootmod3 Stage 1 93.
Car ran 11.40 ET @ 124.53 mph with the stock plugs last month. Stock plugs are fine until it misfires, then you replace them with a colder plug (NGK 97506).
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      05-13-2019, 01:31 PM   #7
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Quote:
Originally Posted by Smokey550ims View Post
I have BM3 Stage 1, 93 with stock plugs (67K miles - plugs were changed at 44K miles). It a 2014 with Comp Package, no mods except carbon filters delete and Bootmod3 Stage 1 93.
Car ran 11.40 ET @ 124.53 mph with the stock plugs last month. Stock plugs are fine until it misfires, then you replace them with a colder plug (NGK 97506).
I'm also running Stage 1. Threw on some 305 Sport Cup 2's in the back and its honestly a completely different vehicle.. I want to go stage 2 soon but worried about catless smell.
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      05-13-2019, 01:48 PM   #8
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Quote:
Originally Posted by jbharshman View Post
I'm also running Stage 1. Threw on some 305 Sport Cup 2's in the back and its honestly a completely different vehicle.. I want to go stage 2 soon but worried about catless smell.
Just bang them on and worry after. Seriously though, apparently it's supposed to be worse until the ECU realises there is a problem then alters fueling, I.e. 100-200 miles Is a number I've seen. Or until its tuned for catless.
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      05-13-2019, 03:31 PM   #9
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Originally Posted by Dwaynos View Post
Just bang them on and worry after. Seriously though, apparently it's supposed to be worse until the ECU realises there is a problem then alters fueling, I.e. 100-200 miles Is a number I've seen. Or until its tuned for catless.
Well to be honest, its one part the smell (which truthfully isn't the biggest deal to me).

Second part is the lady friend wildly disagrees with the idea of removing the cats for the sake of saving the environment - to which part I somewhat agree. I feel a little bit selfish removing the cats just for some sound and HP gain.

I know with the *blah blah blah you shouldn't drive a sports car and ride a bicycle*. I'm not against having fun but I read a study that 1 cat-less vehicle produces the same amount of hydrocarbon output as 600 catted vehicles...

I thought about adding in 200 CEL cats in the midpipes to counteract this a bit but I'm pretty sure they wouldn't get hot enough to make any difference in filter, but may kill the smell.

What to do..
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      05-13-2019, 03:55 PM   #10
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Quote:
Originally Posted by jbharshman View Post
Well to be honest, its one part the smell (which truthfully isn't the biggest deal to me).

Second part is the lady friend wildly disagrees with the idea of removing the cats for the sake of saving the environment - to which part I somewhat agree. I feel a little bit selfish removing the cats just for some sound and HP gain.

I know with the *blah blah blah you shouldn't drive a sports car and ride a bicycle*. I'm not against having fun but I read a study that 1 cat-less vehicle produces the same amount of hydrocarbon output as 600 catted vehicles...

I thought about adding in 200 CEL cats in the midpipes to counteract this a bit but I'm pretty sure they wouldn't get hot enough to make any difference in filter, but may kill the smell.

What to do..
I've looked into 200cel downpipes but they are either mega expensive or Chinese cats welded into a stainless downpipe. Seems more appealing to me as I'm weary about wastegate rattle myself. But don't want garbage cats that could melt.
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      05-13-2019, 04:21 PM   #11
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Quote:
Originally Posted by Dwaynos View Post
I've looked into 200cel downpipes but they are either mega expensive or Chinese cats welded into a stainless downpipe. Seems more appealing to me as I'm weary about wastegate rattle myself. But don't want garbage cats that could melt.
Magnaflow has 200 CEL cats for around $80 USD.

They won't melt because they'll be further back in the exhaust... but at that far back they won't heat up enough to actually filter the exhaust..in which case you'd be pissing into the wind.

I'd love to see someone try this and then try to do an emissions test and see how much it actually differs (maybe me...)
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      05-13-2019, 04:28 PM   #12
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Quote:
Originally Posted by jbharshman View Post
Magnaflow has 200 CEL cats for around $80 USD.

They won't melt because they'll be further back in the exhaust... but at that far back they won't heat up enough to actually filter the exhaust..in which case you'd be pissing into the wind.

I'd love to see someone try this and then try to do an emissions test and see how much it actually differs (maybe me...)
Maybe buy some cheap catless downpipes and weld some magnaflow cats in. Now theres an idea.
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      05-13-2019, 11:07 PM   #13
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Quote:
Originally Posted by Dwaynos View Post
Maybe buy some cheap catless downpipes and weld some magnaflow cats in. Now theres an idea.
I might actually try this and install the MagnaFlow cats where my resonators were.
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      05-16-2019, 08:21 PM   #14
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Talking Get the Catless down pipes.

Quote:
Originally Posted by jbharshman View Post
Well to be honest, its one part the smell (which truthfully isn't the biggest deal to me).

Second part is the lady friend wildly disagrees with the idea of removing the cats for the sake of saving the environment - to which part I somewhat agree. I feel a little bit selfish removing the cats just for some sound and HP gain.

I know with the *blah blah blah you shouldn't drive a sports car and ride a bicycle*. I'm not against having fun but I read a study that 1 cat-less vehicle produces the same amount of hydrocarbon output as 600 catted vehicles...

I thought about adding in 200 CEL cats in the midpipes to counteract this a bit but I'm pretty sure they wouldn't get hot enough to make any difference in filter, but may kill the smell.



What to do..
Get the Catless downpipes you won't really notice it after awhile. The sound is awesome depending on your exhaust set up. You live in San Antonio, TX I don't think your county has emissions so no worries. I live in Killeen, Texas my M5 is catless with Evolution Racing down pipes and Meistershaft full exhaust system. I don't really even notice the car is catless because it's so hot here in Texas it's not like you are driving this car with the windows down in the heat. I plan on getting the BM3 stage 2 soon . I am just doing my research on the different tunes out there.

Ohhh I also own a Supercharged E92 M3 it's also catless and my first one. My wife had a problem at first with it talking about the environment and the smell. This did not last long she forgot all about it after awhile and everything just goes on normal when ever she get in either catless car M3 or M5 so no worries. It also helps that she has her own car and don't have to always ride in mine .
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      05-28-2019, 10:16 AM   #15
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I went with a step colder sparkplugs and gapped them at .020 and the car feels great with the Stage 2 mild burble tune.
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      05-28-2019, 04:57 PM   #16
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What mods do you have for Stage 2 Beta?
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      05-30-2019, 04:56 AM   #17
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      06-06-2019, 01:29 PM   #18
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You can just try running it and see if you get a misfire. My stage 1 OFT tune required colder spark plugs gapped to .020" although it was supposed to be okay with stock plugs.
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      06-07-2019, 06:04 PM   #19
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Anyone on this Forum tried the BM3 Stage 1 93 BETA? What are your thoughts compared to the Stage 1 93 OTS?
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      06-11-2019, 12:00 AM   #20
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Quote:
Originally Posted by Smokey550ims View Post
Anyone on this Forum tried the BM3 Stage 1 93 BETA? What are your thoughts compared to the Stage 1 93 OTS?
I like the lower torque map way more.
Car runs 6.2 100-200kph, OEM plugs.
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      06-11-2019, 06:59 AM   #21
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Quote:
Originally Posted by Alucard335iA View Post
I like the lower torque map way more.
Car runs 6.2 100-200kph, OEM plugs.
I ran mine with OEM plugs not gapped and had the car misfire. Back to stock car was fine. Installed NGKs gapped at 0.018" and all good now with stage 1 93 Beta and car works great.
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      06-12-2019, 01:16 PM   #22
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Quote:
Originally Posted by carlitosgomesm5 View Post
I ran mine with OEM plugs not gapped and had the car misfire. Back to stock car was fine. Installed NGKs gapped at 0.018" and all good now with stage 1 93 Beta and car works great.
I still think this is related to your Octane in the US, in Germany we īve got 102 RON and all my Friends run with OEM plugs 750HP+
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