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Back at it tuning the speed again. Lost our daily SUV to a deer so the Speed had to come back into daily use. Chasing a stumble/cutout that I can't seem to narrow down. Only happens at low throttle and between 2000 and 3000 and acts like fuel cut. logs don't show any real knock, fuel drop out...

Not a whole lot going on lately, parked the Speed for a while until I finish up a couple projects to create room to work on the front end. Helps that we picked up a 2016 Miata Club with a BBR turbo kit already installed as a replacement daily driver. :) Also scored a transit van spin on filter...

Haven't had much going on lately. Tune is leveling out, I believe I have maxed the K04 for now as I hit 19.x to just over 20 PSI depending on air density. Car rips pretty good now. The front end clunking finally got to me though. I have new A arms, inner and outer tie rods and a spare K-frame...

and stuck again.... I think I have not been able to find the map limits or how to rescale some maps to shift the resolution. I.e. The relative throttle plate position A and absolute throttle plate position tables go off the right end of the map as I can exceed the last column of Engine Load =...

Agreed, luckily i have not seen very much knock logged, even with IATs in the 150* range and WOT fuel backed out to 10ish under knock rather than 9:1. Another item on my soon to upgrade list is going FMIC with a mishimoto 3" intercooler I have from a previous project. The more I can keep the...

Something more like this for timing? Seems a bit smoother and reigned in on the higher load areas

I'm not surprised, there are a number of tables that looked odd when I got into the ECU. I have a suspicion someone else has been in the tune before, probably one of the reasons its on a replacement motor. Thanks for the info on the timing. Anything else I should be looking at? Fortunately I...

Yeah, I wasnt 100% sure what boost comp was, but once leveled out to 1, it stopped nerfing my boost target values on gears 3-6. Here's my open loop max timing table

Eureka! Well, kinda. Ended up adjusting the boost compensation tables for 3,4 and 5-6 to 1 (vs having values as low as .8 in the main boost section). Definitely had more pep getting on the highway and saw boost up to 2.29 bar absolute. I did start hitting boost limit again so I am working on...

I am stumped. I have been trying to find which load/limit table is catching me out. I have adjusted a number of load tables mainly to the 2.10 to 2.20 range, but I cannot seem to exceed a load of 2. I have only peaked at 1.98 load on a cooler day. Otherwise I am consistently peaking at a load of...

The pros and cons of a pull a part type junkyard being 7.5 miles from my house... Occasionally good things pop up for cheap Thats what I thought. Part of the reason I left the turbo and PTO housing (semantics on what it is, potato vs potato and all :) )

@JohnnyTightlips - Thanks! That really helps with the thought process for the ECU. I did find a "Desired Boost Load" table, rather than a straight "desired Boost". Made some tweaks and saw some higher boost pressures and load values so continuing to slightly poke at things and see what happens.

Fair enough and makes sense. What I am trying to do is be able to correlate what tables (whether boost or load based) are the ones that I need to edit to reach the tuning point I am aiming for. Looking at engine load, my log where I hit 2.08 bar of boost I logged a max engine load of 1.89 at...

That's the odd thing, current load by gear tables are significantly below the desired boost table and logged pressure. I.e. in 4th, i see peak boost of 2.09 bar, yet both load by gear tables peak at less than 1.7 bar.

So I did find that there were three additional tables that are the ones mainly affecting AFR on full throttle. They were specific single row tables for WOT conditions. I adjusted those to mimic what I was targeting in the primary 3D tables and was able to see a change in logged AFR. I was able...

Had a good day at the local junkyard this weekend. 25% off and t here was a seemingly unmolested CX-7 in the yard. Made off with the nearly entire head (minus HPFP, someone had pulled that already), timing cover and oil pan for just about $100! This included cams, injectors, exhaust manifold and...

Thanks, I'll update the overload and unknown tables to match the base and see what I log on the drive home today.

Ok, made some updates on the ECU. One was targeting 11.3 under high load in the "Open Loop Fuel (Base)" map and in the "Closed Loop Fuel A" table. After logging the drive to work today, I am still seeing commanded AFRs down into the 9's. There are 3 additional Open Loop Fuel tables (Base, Knock...

Yep, Tactrix 2.0 OpenPort cable. Can be used with Mazdaedit, VT, and a few other softwares like the free subaru/Mitsu ECUedit, Forscan and the like. Ok, I thought that might be the case, wasn't sure if it was the engine or the turbo that was dictating the max torque point. Sounds like...

Ok, lets see if I understand the following... I logged the drive home and was playing with loading the engine up to see where I ended up for the overall load factor. In higher gears around 3000rpm, full throttle results in a peak of 1.93 engine load. There is one 1D table called "Requested Load...