Speed Density Hptuners

Is there any video of instruction on how to convert from maf to sd on hptuners and how to tune it?

Hey Marcus, please check the worked examples. There is a specific worked example that covers applying a 1 bar SD patch. The introduction to this worked example can be found here: https://www.hpacademy.com/dashboard/courses/practical-reflash-tuning/hp-tuners-holden-hsv-r8-chevy-ss-1-bar-speed-density-os-introduction

Thank you

Hello all. I am not sure I understand the RTT in the speed density patch for say a P01 Chevy ECU. From the webinar I didn't see any real time changes being made...only histogram and applying the needed changes in Editor then dyno for results and repeat until calibrated. Am I missing something?

Also does establishing a target AFR and turning off LTFT & STFT to calibrate the VE table work the same as using STFT data and multiply by %?

Hi Chris, the vehicle we tuned in the worked example uses an E38 PCM which doesn't offer RTT, that's why we didn't demonstrate it. If you want to use RTT with a Gen 3 LS1 then there's a thorough guide here: https://www.hptuners.com/help/vcm_editor_rtt.htm

You can use the STFT or STFT + LTFT to fill in a histogram to correct your VE or MAF tables, however using closed loop trims is only possible if you're in closed loop and targeting 14.7:1. I prefer to disable closed loop and use a wideband with the AFR error populating my histogram.

Using HP Tuners and a wideband in open loop and EQ Err (lambda) populating the same STFT + LTFT for VE and MAF histograms is what I need. The ethanol% is getting up to 20+% for regular gas ,around here. My GM P59 has a calculated alcohol% and not sure how to reset it or something. My fuel MPG sucks but proportional to E85 not E20%.13MPG E0 I get 23MPG