[G-Mann]

Originally Posted by Sp1ke

As the car comes stock with ~11 psi, is it even worth it to buy and run JB4 on map 1 with about ~13 psi? Or are there other factors involved to make the car drive differently?

Would running it on map 5 push more psi and more pressure on the stock turbos?

Sorry for all the noob questions

keep in mind you will only see that peak boost for a blip and only at WOT. The JB4 will pretty much adjust your whole curve across the band giving you more punch everywhere making it an even more fun DD.

I saw a 13.9 peak boost with map2 DP and CAI, never data logged map1 to see its numbers but there is a noticeable difference between stock and any JB4 map.

[augerpro]

Originally Posted by augerpro

So with stock everything, but running E85, what map can I run? Will this be a problem with the stock charge pipe (I've read they can blow out)?

Also getting a xdrive here, so I like the idea a few posts back about removing the boost limit in 1st and 2nd.

Anyone know the answer regarding the E85?

[Jasond13]

I'm running a JB4 Stage 2 with a BMS intake. I started on map 2 on 93 nice gains car felt great AFR's stable. So I started experimenting with between 30-40% ethanol I mainly use map 5. Very impressive gains. I have tried map 7 but you have to find the proper blend there is a sweet spot when you find it the gains are ridiculous. I have a DP & CP I want to put in when the weather improves but I must say the car is fulfilling just the way it is. It will definitely be in the 400 HP & TQ range as other have already done so. Combined with the AWD in my opinion, the car may be capable of an under 4 sec 0-60.

[alz0rz]

Originally Posted by Jasond13

I'm running a JB4 Stage 2 with a BMS intake. I started on map 2 on 93 nice gains car felt great AFR's stable. So I started experimenting with between 30-40% ethanol I mainly use map 5. Very impressive gains. I have tried map 7 but you have to find the proper blend there is a sweet spot when you find it the gains are ridiculous. I have a DP & CP I want to put in when the weather improves but I must say the car is fulfilling just the way it is. It will definitely be in the 400 HP & TQ range combined with the AWD the car is capable of an under 4 sec 0-60. As for stability the 235i has the same N55 motor as the M3 &4 the only difference is they have another turbo. If anything I would be worried about an M3 or 4 with A JB4 pushing 500Hp it’s really got to be pushing the limits of the N55.

Many people have your setup but WITH a downpipe and it is not good for 400whp. Without the downpipe you're probably in the mid-350's range and with the downpipe you'd probably be up to the mid-high 360's.. maybe. What peak boost is Map 5 tuning you to?

Consequently you're also probably low 4's 0-60 but not sub-4.

[augerpro]

Originally Posted by Jasond13

So I started experimenting with between 30-40% ethanol I mainly use map 5. Very impressive gains. I have tried map 7 but you have to find the proper blend there is a sweet spot when you find it the gains are ridiculous.

Why the blend? Is straight E85 not the highest power?

[Jasond13]

Originally Posted by alz0rz

Many people have your setup but WITH a downpipe and it is not good for 400whp. Without the downpipe you're probably in the mid-350's range and with the downpipe you'd probably be up to the mid-high 360's.. maybe. What peak boost is Map 5 tuning you to?

Consequently you're also probably low 4's 0-60 but not sub-4.

I did say I have a DP & CP I want to put in and then it would be around 400HP did I not? I said the gains are impressive with the DP on.
Also all the cars you are referring to are rear wheel drive that were having issues hooking up from a dead stop. I do not have that problem. I believe with a DP the car will pull a 4 or sub 4 0-60. As soon as soon as the summer comes and I can get over to the track I will attempt this and provide data. Right now I'm going by the data others have provided and the way the car feels with the AWD. My opinion is that it is capable with a good launch.

It really likes E35 running Map 6 at 16psi its much more stable then map 5 which tends to vary. its happy there

[Jasond13]

Originally Posted by augerpro

Why the blend? Is straight E85 not the highest power?

With most of the newer 2014+ N55"s they change the wastegate to electronic instead of pneumatic. It does not play nice with E85 so BMS came up with an EWG & Flex Fuel cable that integrate with the JB4 which enables you to run a blend. There is plenty of info on this on there website go check it out.

[alz0rz]

Originally Posted by Jasond13

I did say I have a DP & CP I want to put in and then it would be around 400HP did I not? I said the gains are impressive with the DP on.
Also all the cars you are referring to are rear wheel drive that were having issues hooking up from a dead stop. I do not have that problem. I believe with a DP the car will pull a 4 or sub 4 0-60. As soon as soon as the summer comes and I can get over to the track I will attempt this and provide data. Right now I'm going by the data others have provided and the way the car feels with the AWD. My opinion is that it is capable with a good launch.

You will have more parasitic losses from the AWD drivetrain that will take away from your traction gains when compared to RWD. Additionally, you have additional weight from the AWD drivetrain as well. Fact of the matter is, people don't have traction issues on dyno's. The only (2) 400 whp (and just barely over 400) I've seen were both on Map 7 with almost 17 psi. Auto-tuning on Map 5 with a small ethanol blend is not going to get you 400whp. Of course we all look forward to seeing your results but don't place bets quite yet.

[Jasond13]

Originally Posted by alz0rz

You will have more parasitic losses from the AWD drivetrain that will take away from your traction gains when compared to RWD. Additionally, you have additional weight from the AWD drivetrain as well. Fact of the matter is, people don't have traction issues on dyno's. The only (2) 400 whp (and just barely over 400) I've seen were both on Map 7 with almost 17 psi. Auto-tuning on Map 5 with a small ethanol blend is not going to get you 400whp. Of course we all look forward to seeing your results but don't place bets quite yet.

Parasitic losses, what my drivetrain has bugs in it lol. Listen don't count the car out just yet its still in its infancy. There has not been enough testing done yet be positive. Lets be honest, the gains that have been made already are quite impressive for such minimal mods. I had an 2010 Evo X MR. To get where I am now with my 235 I would have had to do full bolt on's and change injectors,fuel pump and turbo. Thats another way of looking at it.

[BD_F22]

If 400whp is your goal I would say install the downpipe, get an intercooler, and up your e85 blend to about e50 and run map 7 and see how the car likes it.. If not meth and the pure stage 1 turbo should get you there easily

[alz0rz]

Originally Posted by Jasond13

Parasitic losses, what my drivetrain has bugs in it lol. Listen don't count the car out just yet its still in its infancy. There has not been enough testing done yet be positive. Lets be honest, the gains that have been made already are quite impressive for such minimal mods. I had an 2010 Evo X MR. To get where I am now with my 235 I would have had to do full bolt on's and change injectors,fuel pump and turbo. Thats another way of looking at it.

I don't disagree on that.

$579 for a unit that can get you an instant 60-90hp is a great $/hp value.

[Jasond13]

Originally Posted by BD_F22

If 400whp is your goal I would say install the downpipe, get an intercooler, and up your e85 blend to about e50 and run map 7 and see how the car likes it.. If not meth and the pure stage 1 turbo should get you there easily

for example this is a previous post from JustinCredibleM
I don't need a turbo to get where I want to be. The car does not like anything really over E40, I will be perfectly happy with numbers like this

My M235i: DYNO Update (407whp / 450wtq)
Hey everyone!

I've been wanting to dyno, but work has kept me busy and summer has been way too hot to strap the car on the rollers. However, today was nice in SoCal, so I took my car to eAs to see what my car would put down with its current setup. I am extremely pleased with what the car is putting down and 1st, 2nd and 3rd gear are pretty much worthless right now .

Current mods:

aFe Intake
ER FMIC
ER Chargepipe
ER Downpipe
M-Performance exhaust
JB4 +FF + EWG Wires + E35 fuel mix + Map 6 (16 psi)

The lovely dyno sheet:



__________________

[eboosted]

BTW it's already confirmed that those with EWG cables need FF harness as well, even if you are not going to mix E85 at all. On 93 the JB4 can't control the fuel accurately on any map higher that map 1

[augerpro]

Originally Posted by Jasond13

It really likes E35 running Map 6 at 16psi

You have a stock CP right? How much pressure can it handle? 16psi seems high?

[G-Mann]

Originally Posted by Jasond13

Current mods:

aFe Intake
ER FMIC
ER Chargepipe
ER Downpipe
M-Performance exhaust
JB4 +FF + EWG Wires + E35 fuel mix + Map 6 (16 psi)

The lovely dyno sheet:



__________________

Very lovely results indeed. Some 0-60, 60ft, 1/4 times would be pretty damn interesting with your setup