N55 E70 surging/jumping after stage 1+ MHD

Thisiswes · 12-05-2020, 12:45 PM

Stock 2012 e70 X35i. Just installed the MHD stage 1+ tune and certainly feel the difference. However, when doing a decent pull in a higher gear the boost is jumping around. I’ve attached a graph from their app.

I can hear blowoff after releasing the throttle fwiw.

Tested stage 1 and didn’t notice it, but the boost was much lower in that tune.

randrews15 · 12-05-2020, 12:56 PM

Have you changed the plugs? I found some information that recommends running one stage colder plugs for N55 that have had the boost turned up. Just a thought.

12-05-2020, 12:45 PM	#1
Thisiswes Registered 0 Rep 1 Posts Drives: E70 x35i Join Date: Dec 2020 Location: Orlando iTrader: (0)	N55 E70 surging/jumping after stage 1+ MHD Stock 2012 e70 X35i. Just installed the MHD stage 1+ tune and certainly feel the difference. However, when doing a decent pull in a higher gear the boost is jumping around. I’ve attached a graph from their app. I can hear blowoff after releasing the throttle fwiw. Tested stage 1 and didn’t notice it, but the boost was much lower in that tune. Attached Images
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12-05-2020, 12:56 PM	#2
randrews15 Lieutenant 289 Rep 553 Posts Drives: 2012 E93 M3 Le Mans Blue Join Date: Nov 2012 Location: Parrish, FL iTrader: (1)	Have you changed the plugs? I found some information that recommends running one stage colder plugs for N55 that have had the boost turned up. Just a thought.
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