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BMW Z4 Forums (G29) BMW Z4 (G29) General Forum any mods for the m40i available yet?

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      05-28-2019, 08:01 PM   #1
habib86
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any mods for the m40i available yet?

just got a alpine white M40i and didnt find a single mod for it on the market
this car needs a catless down pipe and a tune asap
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      05-29-2019, 01:22 PM   #2
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Bootmod3 and MHD have B58 tunes already that should work on the m40i. As far as catless DPs go, there isn't anything officially listed as of yet, but any of them that do not have the exhaust hanger on it should work, such as the VRSF catless DP.

I'm right there with you wanting to do mods to my m40i, but with a limited market at the moment, gonna be some time before things get tractions and momentum. AC Schnitzer has a development program going at the moment for the g29, but it's limited to wheels and tires at the moment. I'd love to get some side skirts and front lip like they did for the g20 sedan, but who knows when that will come out.

I've love to see some kind of rear spoiler for some added downforce on the car as well.
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      05-29-2019, 07:35 PM   #3
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will check if the part number for the oem downpipe for the z4 g29 match up with any other bmw vehicle with a B58 engine... guess it goes for aftermarket dp as well ... want to do a stage 2 bm3 tune but i need dp for that so thats why im holding up on the tune for now ... guess even the drop in filter if it matchs up with other cars i can bet a BMC 1 that will fit
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      05-29-2019, 08:36 PM   #4
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Already checked, oem DP only used on g20 m340i. But the others are manufactured relatively the same angles. But always best to lean on the safe side and wait for confirmation from the aftermarket. I had an extra catless DP for my m240i that I got rid of when I sold the car. Wish I would’ve held onto it now >.<
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      05-29-2019, 10:17 PM   #5
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that was going to save us lots of waiting time
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      06-24-2019, 02:10 PM   #6
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seems the aftermarket for the B58 in them new z4s are not growing at all 🙁
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      06-24-2019, 03:13 PM   #7
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Quote:
Originally Posted by habib86 View Post
seems the aftermarket for the B58 in them new z4s are not growing at all 🙁
Oh?

https://www.motor1.com/news/356239/bmw-z4-m40i-dahler/
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      06-24-2019, 04:12 PM   #8
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Quote:
Originally Posted by PrionFawkes View Post
Lol didn’t know they had posted my dyno results haha. That Dähler Z4 looks great. While the 21s look fantastic, larger wheels means slower acceleration and less cornering performance (assuming the small sidewalk on the 19s help that much more). The rest of the car’s contrast is great as well
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      06-25-2019, 07:48 AM   #9
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waiting for bolt ons for this car and a BM3 tune 😁
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      06-25-2019, 08:03 AM   #10
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Mike at X-ph (vender on the forums) said that BM3 will work on any B58 motor (though I saw a newer m240i had issues with BM3 recognizing his vehicle).

I connected the JB4 from my ‘17 m240i to my wife’s ‘19 X3 M40i and it seemed to be working. Put it on the ‘20 Z4 M40i while on the dyno and got no improvements at all.
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      06-26-2019, 07:44 AM   #11
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i emailed them and thy asked for my vin number and then thy replied to my by saying the b58 tune is not compatible with my car
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      06-26-2019, 08:19 AM   #12
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Quote:
Originally Posted by habib86 View Post
i emailed them and thy asked for my vin number and then thy replied to my by saying the b58 tune is not compatible with my car
That’s what I was thinking. Apparently BMW used enhanced encryption or something on (I believe) ‘19+ vehicle so none of the flash tunes are compatible at this time.

Like I had mentioned, there was a 2er I saw that had the issue and some others had references m3/4s having issues with the s55 and 340s from 2019.
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      07-06-2019, 03:22 PM   #13
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Some carbon parts (available end of juli)

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      07-06-2019, 06:43 PM   #14
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Some carbon parts (available end of juli)

So who makes the quad exhaust tips in that video? They look sooooo much nicer than those oddball quadrilateral shaped tips the M40i comes with!
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      07-06-2019, 09:44 PM   #15
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Those look like a similar design to mperformance tips, but not sure. Agree 100% they look better than the stock ones.
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      07-09-2019, 03:01 PM   #16
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      07-09-2019, 07:39 PM   #17
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It honestly doesn’t sound much different than stock with the exception of some more bangs. The note isn’t lower, but it sounds louder. I personally like the exhaust note so this is a pretty nice setup. Wonder what material it’s made from (titanium, steel, aluminum).
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