[Jakejacobsonn]

Hey guys
So I got some questions
1. Is 20.4lbs of boost a lot for a 328i on stock turbo??
2. My mods are er cp vrsf dp jb4 rez and muffler delete running map 2 with 4 gals of e85 rest 93
3.Does the EWG change anything ?? I have a 2015 f30 do I need harness or what do I need to make 22lbs of peak boost ?
4. How are people making 21psi on just tune alone and I can’t make 21.. I have no leaks nothing

[cpxchewy]

Stock peak is at around 18.9psi. 20.4 should be fine with cp, dp. If you're going beyond 22 then you should definitely upgrade to a bigger turbo.

I'm pretty sure you need the flex fuel harness to take advantage of the E85.

Don't know about the other questions, hope that helps.

[Jakejacobsonn]

Alright thanks!! So could I potentially push 22lbs what more would I need to get those number ?

[Dylantm]

Originally Posted by Jakejacobsonn

Alright thanks!! So could I potentially push 22lbs what more would I need to get those number ?

Dude, this is your third post asking the exact same thing.

Anyways, why you worried about 22PSI? Just put a hose clamp on the waste gate rod so you can start hitting 30PSI. Should be good for 1000hp or so.

As far as supporting mods, get a Raizin voltage stabilizer and one of their fuel atomizers. go 100% E85 and you should be straight.

[Jakejacobsonn]

I thought the stock turbo could only handle 24 I’m just trying to get as mich power out of it as I can

[Gen13 F36]

Just a hypothetical question here.... how much really can you squeeze out of a N20/26 in power? You can change everything except stock turbo. How much you going to spend?

I have BM3 and awe quad exhaust (I could have gone cheaper on exhaust but I love the awe sound and the quad is just aesthetic) . That all I'm doing to my car. If I want power I would have just go inline 6 or M car.

[Jakejacobsonn]

Yeah I 100% get that it’s not that I’m trying to get some crazy power out of it I just feel like for the mods I have and reading what other people say they are getting 2-3psi more with jsit the tune so I guess I’m saying am I missing out on power

[Jakejacobsonn]

How do you like BM3 better then jb4?

[bmwchue]

yes jb4 on map2 should be 21 to 22lb
and like I ask again post up the logs so we can see what's wrong

[didisinned]

i just uninstalled my Jb4 and installed the BM3. I was running Map 2 on JB4 and i'm on stage 1 BM3. Overall i prefer Bm3 because the power delivery is more linear, and there is much more customization to it.

BM3 has burble customization for exhaust, you can tune the 8 speed transmission which is awesome, etc etc.

JB4 Map 2 i'm pretty sure is quicker than stage 1 BM3, however the power kicks in hard at 3k RPM and a bit sluggish before that. I had no issues with JB4 too both are good tunes.