What is the proper way to setup the air model 15-17 f150 speed density system when installing a supercharger and using a 3 bar map sensor
in place of a 1 bar sensor any help would be appreciated
Thanks in advance
What is the proper way to setup the air model 15-17 f150 speed density system when installing a supercharger and using a 3 bar map sensor
in place of a 1 bar sensor any help would be appreciated
Thanks in advance
Update the MAP Slope and Offset for the sensor, dial in the Speed Density using the SD Calculator.
Eric Brooks
HP Tuners, LLC
That is correct purely speed density no MAF
Ok when using the sd calculator at 22.9 inhg fuel trims are -28 in the calculator I highlight 22.9 from 500-6250 rpm multiply by .90 and then hit airflow coefficients
and the retest I still have -28 fuel trim an I using the calculator correctly?
Interesting.
Do you have experience driving / tuning both SD and MAF Coyotes? I'm really curious to hear the differences.
2015 S550 V6 is also MAP controlled - we did a custom single turbo recently. Tuning MAP for boost is way more friendly.
We tuned a 2014 V6 turbo as well which is MAF controlled. Not sure why Ford went MAP in N/A engine but it's good actually.
Clipboard01.jpg
Last edited by veeefour; 07-12-2019 at 02:01 PM.
v-performance.pl/
facebook.com/veee.performance/
https://www.instagram.com/v.performance.pl/
Remote tuning:
[email protected]
+48 697276579
Interesting for sure.
I have my MAF based '12 VMP Gen II Coyote running really well these days, but it took a ton of work. My TB tables look nothing like OEM ones, because it's the only way I have found to describe the characteristic change in TB opening to MAF flow, that happens when the bypass closes. Feels like I could have gotten here with SD a lot faster.
Check out this roll on transition: (WOT start/end 595/600, this is all DD driven)
Roll-on2.jpg
Last edited by CCS86; 07-12-2019 at 02:16 PM.
SD calc in editor is limited and SD model is limited as well - it won't accept certain values. MAF is not really the best sensor to control boost and those cars were not even intended for boost.
You will never make it run like OEM because it lacks a proper MAP sensor. SD model is not perfect either - works well for stock N/A car tho - you can actually take the MAF connector out and it runs perfect.
Most of the time SD model needs zero changes for higher boost - just expand your range and move on because ford already did the job.
v-performance.pl/
facebook.com/veee.performance/
https://www.instagram.com/v.performance.pl/
Remote tuning:
[email protected]
+48 697276579
I had to make extensive SD changes to get calculated MAP tracking accurately with actual MAP, both in boost and in vacuum.
Thanks for your help guy's the problem I'm have is the area 18.4 and 22.9 inhg is very rich fuel trims long trims are -28 and short trims are -28 all other areas are
good any suggestions?