[Seaz]

I tried springs on my e92 and the ride turned to shit. way to bouncy

you've got to match the springs to the shocks

coil overs was my options.

but who knows for adaptive x3 suspension

[FSociety]

Originally Posted by kamek

Thanks! I had KW coilovers on my E92 and they were great.

For springs, is there still an issue with the suspension wearing more quickly because of the different spring rate? Springs are the only option if we the M adaptive suspension, right?

To be honest, the H&R all it does is lowers it and I personally think (i might be crazy) but ride was more planted on stock springs for some reason.

Originally Posted by voyagergab

I had ACS on my F10. They were really very nice.
Also had H&R on the same car before but that was too low.

Here is a pic with ACS

Yea i hear ACS is the favorite from my M5/M6 friends

Originally Posted by Seaz

I tried springs on my e92 and the ride turned to shit. way to bouncy

you've got to match the springs to the shocks

coil overs was my options.

but who knows for adaptive x3 suspension

Exactly how it is in my X4 M40i

[ed4]

Originally Posted by FSociety

Yea i hear ACS is the favorite from my M5/M6 friends

Exactly how it is in my X4 M40i

Those M5 and M6 people are such douchebags I hear...

[FSociety]

Originally Posted by ed4

Those M5 and M6 people are such douchebags I hear...

Yes especially the NJ ones so raw

[pskdude]

any updates on the Dinan tune ? Also can you guys be more specific on the exact spacer info ? not sure which one to buy.

[KAP8]

I just ordered a JB4 for my F32 435i as I'll be out of warranty in 600 miles. They said it will add 30/40 horsepower and torque on my MPPK equipped car.

If it does and if it is indeed bulletproof and doesn't cause any problems, I'll order one for our ///M40i.

[Seaz]

Originally Posted by KAP8

I just ordered a JB4 for my F32 435i as I'll be out of warranty in 600 miles. They said it will add 30/40 horsepower and torque on my MPPK equipped car.

If it does and if it is indeed bulletproof and doesn't cause any problems, I'll order one for our ///M40i.

So far so good, 5 weeks in and not a problem for

But this is my 3rd JB and never had an issue

[KAP8]

Originally Posted by Seaz

So far so good, 5 weeks in and not a problem for

But this is my 3rd JB and never had an issue

That is great to hear!! I'm dumb as a wall, so I'm going to find a local shop to do the install.

[Seaz]

Originally Posted by KAP8

That is great to hear!! I'm dumb as a wall, so I'm going to find a local shop to do the install.

yeah even if its easy i didn't do it myself

Took them 20 minutes but its done right

I highly suggest the metal case burger sells to shield the chip from the elements

[KAP8]

Originally Posted by Seaz

yeah even if its easy i didn't do it myself

Took them 20 minutes but its done right

I highly suggest the metal case burger sells to shield the chip from the elements

I ordered the $59 case when I placed the order!

[iManu]

So Seaz, have you had the chance to time the 0-60 or 0-100? Before this freezing rain and snow we had some dry roads! I'm curious about JB4 for the M40i x3 vs the Dinan. I feel this car is fast from stop but after 100kmh it will be slow since it's heavy and less aerodynamic! I'm coming from a lighter car but rwd so I'm scared that the M40i won't be fast enough! Also, I wan to make this car do the 1/4 mile in 11.9 seconds if possible, hope they will come out with a downpipe or some aggressive tune soon!

[ND40oz]

Originally Posted by emmanuel.yoo

So Seaz, have you had the chance to time the 0-60 or 0-100? Before this freezing rain and snow we had some dry roads! I'm curious about JB4 for the M40i x3 vs the Dinan. I feel this car is fast from stop but after 100kmh it will be slow since it's heavy and less aerodynamic! I'm coming from a lighter car but rwd so I'm scared that the M40i won't be fast enough! Also, I wan to make this car do the 1/4 mile in 11.9 seconds if possible, hope they will come out with a downpipe or some aggressive tune soon!

Even stock it's not exactly slow over 100 km/h, C&D has all of the numbers up to 140 mph. Stock for stock it's faster than the 135i, can't see that changing much with similarly modded vehicles.

C&D X3 M40i Test Sheet

[Seaz]

Originally Posted by emmanuel.yoo

So Seaz, have you had the chance to time the 0-60 or 0-100? Before this freezing rain and snow we had some dry roads! I'm curious about JB4 for the M40i x3 vs the Dinan. I feel this car is fast from stop but after 100kmh it will be slow since it's heavy and less aerodynamic! I'm coming from a lighter car but rwd so I'm scared that the M40i won't be fast enough! Also, I wan to make this car do the 1/4 mile in 11.9 seconds if possible, hope they will come out with a downpipe or some aggressive tune soon!

nothing times yet. I figure I'm shaving
0.5sec

[iManu]

Originally Posted by ND40oz

Even stock it's not exactly slow over 100 km/h, C&D has all of the numbers up to 140 mph. Stock for stock it's faster than the 135i, can't see that changing much with similarly modded vehicles.

C&D X3 M40i Test Sheet

Yes I agree for a SAV at that price it's pretty a bang for your buck! Do you have the link for C&D 140mph info? Could'nt find it on google. My 135i does the 1/4 mile in 12.6 and 0-100 in 4.5-4.8 seconds depending of the condition of the roads, it's RWD. What I really like about the 135i is that over 120kmh it still can push you in the seats. Also I have to beat my friend that has an Audi S4 and a 240i x-drive. If with an aggressive tune I can do 11.9-12.1 on the 1/4 mile I'll be happy! Haha

[edcrane]

Originally Posted by emmanuel.yoo

Yes I agree for a SAV at that price it's pretty a bang for your buck! Do you have the link for C&D 140mph info? Could'nt find it on google. My 135i does the 1/4 mile in 12.6 and 0-100 in 4.5-4.8 seconds depending of the condition of the roads, it's RWD. What I really like about the 135i is that over 120kmh it still can push you in the seats. Also I have to beat my friend that has an Audi S4 and a 240i x-drive. If with an aggressive tune I can do 11.9-12.1 on the 1/4 mile I'll be happy! Haha

12.6 without any tune? Really? That's pretty surprising.

[iManu]

Originally Posted by edcrane

12.6 without any tune? Really? That's pretty surprising.

Yes I have MHD and downpipe and intercooler! Stock the 135i feel so slow specially over 5000rpm! Haha

[ND40oz]

Originally Posted by emmanuel.yoo

Yes I agree for a SAV at that price it's pretty a bang for your buck! Do you have the link for C&D 140mph info? Could'nt find it on google.

There's no need to find it on google, I linked the test sheet directly, the info is all there:

30: 1.7s
40: 2.4s
50: 3.4s
60: 4.4s
70: 5.7s
80: 7.2s
90: 9.0s
100: 11.2s
110: 13.8s
120: 17.1s
130: 21.0s
140: 26.6s

All of these numbers are on 91 octane.

Originally Posted by emmanuel.yoo

My 135i does the 1/4 mile in 12.6 and 0-100 in 4.5-4.8 seconds depending of the condition of the roads, it's RWD. What I really like about the 135i is that over 120kmh it still can push you in the seats. Also I have to beat my friend that has an Audi S4 and a 240i x-drive. If with an aggressive tune I can do 11.9-12.1 on the 1/4 mile I'll be happy! Haha

I don't think there are any B58's doing sub 12s in the quarter on just a tune, you'll likely need more supporting mods when they become available. But if you floor it from 120 km/h, you're going to get pushed back in your seat.

[Max Well]

Originally Posted by emmanuel.yoo

I feel this car is fast from stop but after 100kmh it will be slow since it's heavy and less aerodynamic! I'm coming from a lighter car but rwd so I'm scared that the M40i won't be fast enough!

Although 'fast' is subjective, difficult to argue that the X3 M40i doesn't meet that standard. Video from markymark666 (below), found in his thread 25 Nov 2017, 1258PM (the higher res version of his first post)
http://x3.xbimmers.com/forums/showth...1438949&page=2. Also another review with Autobahn footage near the end, in case you haven't seen it - http://x3.xbimmers.com/forums/showthread.php?t=1456848

[iManu]

What do you guys think about the JB+ vs the JB4? The JB+ has up to 4psi boost increase over stock, will this apply to the M40i?

[Seaz]

Originally Posted by emmanuel.yoo

What do you guys think about the JB+ vs the JB4? The JB+ has up to 4psi boost increase over stock, will this apply to the M40i?

jb× won't do much for you. our m40i are already BMW tuned above that

[iManu]

Originally Posted by Seaz

jb× won't do much for you. our m40i are already BMW tuned above that

Just got the M40i X3! Love the smoothness of the ride and the technology! I just wished there was a little bit more of HP and Torque haha

[SSIMPS]

My JB4 is arriving Saturday evening and I just indulged in a tank of 101 octane. Sunday is going to be a very fun day