[e92life]

335is 6MT, FBO + Inlets, STOCK intercooler. JB4 + MHD BEF I have a avg IGN of 6.7 on Map 2 and I'm on 93 oct and sometimes when I'm giving the car full throttle past 100 or so boost will cut off and it feels like I hit a brick wall but I WONT be thrown into map 4 or get ANY codes.

Could this be heat soak?

It's pretty much like an invisible limp mode. Never changed spark plugs/coil packs or done a walnut blast. I'll also hear the fans kick in at 100%. Thoughts?

[Vorsprung_CJB]

Generally you want to be at or under 5.0 on pump gas.

Could be heat soak or a combination, but given the bad avg_ign you might be totally bottoming out timing.

Without a log it is pure speculation.

[blackhat75]

It's either air, fuel or spark.
Kindof sounds like fuel cut. Isn't map2 16-18 psi? I don't have MHD. Don't you need to choose your map according to oct fuel rating Variants (US OCT ACN91, 91, 93, 95 / RON 93, 95, 98, 102)? Try getting your fuel from a different station. Some are better than others.
If you've never changed spark plugs, you could easily be blowing out your spark with the higher pressures. They're pretty cheap online and a simple fix.
If you have a boost leak(massive), your DME target psi and actual could be way off.

Not to be dicky but do you know how to record a log with your JB4?

[ManiN54]

Originally Posted by e92life

335is 6MT, FBO + Inlets, STOCK intercooler. JB4 + MHD BEF I have a avg IGN of 6.7 on Map 2 and I'm on 93 oct and sometimes when I'm giving the car full throttle past 100 or so boost will cut off and it feels like I hit a brick wall but I WONT be thrown into map 4 or get ANY codes.

Could this be heat soak?

It's pretty much like an invisible limp mode. Never changed spark plugs/coil packs or done a walnut blast. I'll also hear the fans kick in at 100%. Thoughts?

Post logs for review, for some reason your timing flatlines. Your logs will show the reason.

Ps. That’s too much boost for pump gas.