[nicked8]

Hi everyone,

I've recently started tuning my E92 N55 with MHD - here's a little info of my car:
2013 E92 335i xDrive
49,000 miles
MHD Stage 1
Dinan exhaust
ER Chargepipe
Amazon G-Plus FMIC (details to follow)

Yesterday I installed the G-Plus FMIC that you can find on Amazon. I was curious to see how well it works and don't plan on going above Stage 1+ so I figured even if it wasn't great it would at least be an improvement over the stock one.

Here are two logs taken right before the install with stock FMIC. Ambient temperatures were around 50 degrees and each pull was done back to back. Started in 3rd gear and shifted into 4th:

Pull 1: https://datazap.me/u/nicked8/223-bas...og=0&data=3-17
Pull 2: https://datazap.me/u/nicked8/223-bas...og=0&data=3-17


Two logs taken right after the FMIC install. Ambient temps had dropped to the low/mid-30's and again the pulls were done back to back. Again they show a 3-4 shift.

Pull 3: https://datazap.me/u/nicked8/223-mod-1?log=0&data=3-17
Pull 4: https://datazap.me/u/nicked8/223-mod-2?log=0&data=3-17

Overall, it seems as though the FMIC is functioning well as far as I can tell. I'll have to get some more logs with the ambient temps a little warmer for a better comparison and will update when I do.

In the meantime, can any of you take a look at some of the logs and tell me if there are any areas of concern? I'm still learning how to understand the graphs myself. From what I see, there were some big timing corrections on Pull 2 that I'll need to keep an eye on. Also, it seems to me that I might have a boost leak as I'm not hitting the boost targets.

Any help would be much appreciated. I'm holding off on upgrading to Stage 1+ until I'm confident everything is in order here. Thanks!

[TunafishE93]

You are hopefully leaking boost somewhere. You are 2 to 3 psi under your targets without having corrections.. I would check all your piping.

You had this before and after the intercooler change so maybe charge pipe...

Just for reference on boost target vs pressure, here is a stock log, no tune 91 octane, n55. I stay close to target...
https://datazap.me/u/tunafish389/log-1582558429

You need to get leak fixed before your logs will be relavent. Good news is once you fix leak you will have definite power boost...

[nicked8]

Originally Posted by TunafishE93

You are hopefully leaking boost somewhere. You are 2 to 3 psi under your targets without having corrections.. I would check all your piping.

You had this before and after the intercooler change so maybe charge pipe...

My thought as well, I'll have to get in there and test the connections somehow. I tightened the hell out of the t-clamps so I'm wondering if the o-ring on the throttle body is no good.

Thanks for your help.

[TunafishE93]

Yeah finding leak in system is not something I have done, sure someone will come along with some pointers.. Good luck.

You intake temps look much better by the way.. I might get myself one of these thanks to you.