I'm also having a really bizarre issue with *light" throttle. Tomorrow morning I'm going to set my Engine TM tables to 300 across the board to see if the desired KPA holds beyond 260ft lbs of peak torque. I figured it was torque management because I would line up my peak torque reading with the RPM axis and saw that my peak torque was going up and down almost perfectly in line with what my tune states for limits. I decided to make my peak, brake, and overboost limits all exactly the same and that has brought me from 224kpa to 229kpa desired in some spots. When logging peak torque, I am finding a direct correlation between my peak torque number and how much boost the ECM will command. I have found I am still being limited my torque management. Will update my first post probably tomorrow. Sweet! More power! I also got some knock when hitting the throttle lightlywhile cruising, so I'll need to do something about that. Thinking back to the help file in VCM Editor and what some others have said, I figured now would be a good time to up the Driver Demand table to tell the computer I want to make more power.Įngine > Torque Management > Engine > Map A - Normal A little more desired boost, but not much. 70 g/cyl airmass, I figured maybe the Knock Airmass boost control limiter was limiting me, so I upped these limits for 0 knock, probably higher than I plan to make power-wise.Įngine > Torque Management > Turbocharger > Knock Airmass That is an extra 3lbs of boost to get me to 16 just from upping the torque management. Not pictured is how my airmass has now hit the 0 degree knock airmass limit of. Granted, it's not pure apples to apples, but the point is to illustrate how my desired boost and delivered boost have both gone up. Next, I went out on the road again and logged. I added 100 to both of these to start with. Ok, I'll take this advice and record what happens.Įngine > Torque Management > General > Peak Torque & Brake Torque Limit Everything I have read says "Just up the torque limits!". Now, I want to get more power out of this bad boy. With the stock tune, I am hitting and commanding around 12-13lbs of boost. For my tests, I get on the highway and do a 40 to 70mph WOT run which is perfectly legal. The first thing you can do is go out and do a run on the highway and somewhere safe away from other vehicles to see what your car is doing stock in terms of boost. On the flip side, people are buying mail order tunes left and right without this being an issue. ![]() It is always ideal to use a wideband too! Unfortunately, I do not have my wideband hooked up yet so I'm playing with fire, don't be dumb like me. I have attached a tune where you can see what I did with timing and Power Enrichment to an otherwise stock tune. To do this, I reduced the timing a little and fixed Power Enrichment settings to be richer and faster(disabling delay). The first thing that should be done is to prepare your tune to take added boost. Out of the box, the car is setup to run as lean as it can and make enough power to make the car mildly enjoyable. The 1.4t Chevrolet Cruze is an economy car with an economy turbo, an economy engine, and an economy tune. This is a good link with comments from Chris that are helpful: **KUDOS to Chris from HPT, other tuners, and the EFILive folks for helping me understand what I'm doing. Some of the info is confusing due to flip flopped and incorrectly named stuff, but the basics are there and thanks to the HP Tuners staff for putting that together ![]() ![]() **NOTE - Please read the Help section of VCM Editor to understand how the ECM works. This document is updated as I go, please do not be upset that it isn't 100% Take my results and advice with a grain of salt! This is not a definitive guide and is more me learning along the way and documenting my results. **DISCLAIMER - I am not responsible for you blowing up your engine.
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