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Its around $400 used Not detectable by dealer when removed (to sell, for warranty work, etc) Retains factory safeties and has built in safeties of its own that revert to stock map if it sees anything dangerous up to 75-80whp gains on E30, and 100+ whp on methanol Depreciation as in JB4...

It was released a month or two ago: https://burgertuning.com/products/bmw-port-injection-kit-for-b58-gen-1-gen-2-motors

Its safe to use on a stock DP car. Only goes up to about 4-4.5psi over stock, though I recommend keeping it on default boost for pump gas. Max it out if you have 2-3 gal E in the tank. I assure you that there is absolutely no better power for the money mod than the JB+ ? Not even close...

Just get a JB+ honestly if you want a little power bump that won't affect warranty (as long as you remove it when going to the dealer) It is about 1-2 minutes to install/remove. Otherwise it is undetectable by them once removed. I know someone selling one for $150 if you're interested.

your timing was fine, so as long as it still holds up after diluting, no power lost. Yes, you will lose power if you dilute too much and timing starts to suffer from low octane.

Still looks like a bit too much ethanol. You can try bumping up FF by a few to see if that helps at all, but likely you need to dilute with more 93. Try to stick to 3 gal max. JB4 cars typically struggle with trims past E30. Trims at 49 for multiple consecutive datapoints is no good, risk of AFR...

Here is a good example of a really nicely dialed E30 map on a stock car (M340i): Boost control: https://datazap.me/u/coloneladama/log-1723402616?log=0&data=1-2-3-4-8-9-15-20&solo=11 See how throttle is just gently keeping boost under target without any major cuts? good indication that the wgdc...

Gonna have to drop FF until throttle clears up. MTs typically end up near 15-25. Send me a PM with your next log at FF=25

It depends on IATs, but yeah under 100 IAT, my car will read ecu_psi as 11-13. At IATs >120, it can get into 14-16 psi and runs lower timing. Stock map, tuned maps, whatever. boost comes up a bit at 5k rpm and tapers off after 6. 2020 boost curve is a lot different, tapers off at 5k quickly...

Normal, my MT does too on Map 0 (stock). I'm telling you man, these MTs are calibrated differently lol

That is because it is stock ? @Eastwood , you can stay on Map 1. Duty bias affects all maps. Since you don't have any Map 6 boost targets loaded, and you switched to Map 6, it is just stock.

So nothing different on the cylinder fill/load tables? with JB4, It seems like with AT cars it'll take cylinder fill >100% no problem and drop timing to maintain torque targets. MTs just panic and drop cylinder fill requests(dme boost targets)/slam throttle shut/etc. Maybe I don't understand it...

Probably the meth that did it lol. Myself and about ~5 other MTs I've tuned at E25/E30 on JB4, never had an issue with slip. I've been tuned for 3k+ miles. Mind sharing a log? Curious what boost/timing levels it starts to struggle.

Try these duty bias settings out to start: duty_15 duty_20 duty_25 duty_30 duty_35 duty_40 duty_45 duty_50 duty_55 duty_60 duty_65 duty_70 41 41 41 41 41 41 44 47 50 50 50 50

Use this one, it is actually working quite well for your car already. Trims sitting around 45, timing perfect.

Try Map 1 again but you need to have the pedal to the floor during the pull. 3rd gear from 2500 to 6500 Most likely the car will need a good bit of wgdc changes buy want to see how it looks first.

Added some info for getting started tuning MT cars, and linked to the MT firmware in the original post.

Logs look great. One pull with a single cylinder 3 degree correction is nothing, and honestly that's where you want to be. It means you are just at the right amount of boost for your octane. It was the highest IAT pull in your log too. FF and WGDC look nearly perfect as well. I would just drop...

E30 JB4 run when? ? Would love to see the gains

They moved from Russia to Finland when the war started. Its the only way to unlock, so looks like its JB4 gang for you :thumbsup: