[Stellarxz]

Hey y'all this is kinda a long one so…

So I have a 2013 335 xDrive and the car has about 75k miles on the engine, and I recently went MHD stage 1 91 oct, I fill up with 93 tho, and I've noticed I'm not really making as much power as MHD says or as people are saying? It def feels quicker, and it's hitting 15 psi peak boost, but it still can't beat my buddies 3.7 q50 from a roll.

I also have this weird bogging when I start the car sometimes, and I recently changed spark plugs so I was thinking it could be coil packs? I was thinking the power loss and bogging could be associated to those.

Mod list:
CTS Intake
Rev9 Axleback muffler

Any help would really be appreciated as this is kinda annoying lol!

[thejeremyman9]

So you are running stock intercooler? Post a log, your IATs are probably excessively high. Also stage 1 91 is the lowest power increase over stock.

[Stellarxz]

Originally Posted by thejeremyman9

So you are running stock intercooler? Post a log, your IATs are probably excessively high. Also stage 1 91 is the lowest power increase over stock.

So I don't have my exact logs but it's exactly the same as my buddies cuz he's having the same problem on his car

https://datazap.me/u/danila1881/135i...8;zoom=133-198

Also is there any concern with running stage 1 93? I only fill up like Mobil, shell, etc. but I've heard of people doing stage 1 91 to prevent rod knock?

Also MHD claims 350/380 stage 1?

[AmuroRay]

You're a tiny Pneumanic wastage turbo (PWG) - you need to be in Stage 2+30 to even stand a chance against a Q50.

[Stellarxz]

Originally Posted by AmuroRay

You're a tiny Pneumanic wastage turbo (PWG) - you need to be in Stage 2+30 to even stand a chance against a Q50.

Oh what that's crazy cuz I take him off the line easily stock like in a 0-130 i out car lengths on him it's just when we do like a 40 roll or a 60 roll that it struggles

[thejeremyman9]

Originally Posted by Stellarxz

So I don't have my exact logs but it's exactly the same as my buddies cuz he's having the same problem on his car

https://datazap.me/u/danila1881/135i...4&zoom=133-198

Also is there any concern with running stage 1 93? I only fill up like Mobil, shell, etc. but I've heard of people doing stage 1 91 to prevent rod knock?

Also MHD claims 350/380 stage 1?

You can't look at someone else's log to check how your car is doing.... you can try 93 map, but you need to log to confirm your fuel quality is good enough.

That is a crank HP number under perfect conditions (i.e., no timing corrections, meeting boost targets, etc). Once again, you need to log to see what is actually going on...

https://f30.bimmerpost.com/forums/sh....php?t=1732327

[Stellarxz]

Originally Posted by thejeremyman9

You can't look at someone else's log to check how your car is doing.... you can try 93 map, but you need to log to confirm your fuel quality is good enough.

That is a crank HP number under perfect conditions (i.e., no timing corrections, meeting boost targets, etc). Once again, you need to log to see what is actually going on...

https://f30.bimmerpost.com/forums/sh....php?t=1732327

Thanks for that other post by u super informative!

Only problem is I don't have MHD logging thing I never bought it…
So I guess I gotta buy it now lol

[n55david]

Without logs we can't help you.

Also

You're a basically stock pwg car. It's not going to be fast. Racing from a roll and at high speeds will only work against you.

Also you need an intercooler