menicing Member 19 Member For: 12y Posted 16/04/17 06:15 AM Share Posted 16/04/17 06:15 AM 2 issue I'm trying to sort out, I've included as much info as I can think of minus the tune file any help is appreciated I'm using hpt for my barra conversion (fg engine with bf pcm) and I currently have an issue where once the car is up to temp (60-90c) during startup it'll rev up and then drop back down real low almost stalling and slowly come good, currently idle is set to 750rpm... There's been a couple of times that its started and gone straight to the desired rpm without issue after running for quite some time, so is this something the ecu might right itself if I'm not updating the tune constantly? also I have zero issue's like this with a cold start Also I'm finding the return to idle after free rev is slow anyone able to point me to the correct table for possibly fixing that, I've put a manual table into the dashpot tables but they reference while the vehicle is moving and haven't been able to test it on the road yet This is my post but for some reason its posted under a different user? Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 6m 21d Gender: Male Location: Adelaide Posted 16/04/17 06:21 AM Share Posted 16/04/17 06:21 AM FG airflow tables ... BF airflow tables and multipliers you work out the rest Link to comment Share on other sites More sharing options...
menicing Member 19 Member For: 12y Posted 16/04/17 06:23 AM Author Share Posted 16/04/17 06:23 AM Rgr that, always get a kick out of your replies on hpt forums. I understand its to let us work it out ourselves and I approve haha thanks jet Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 6m 21d Gender: Male Location: Adelaide Posted 16/04/17 06:30 AM Share Posted 16/04/17 06:30 AM Well then I think you'll understand that before asking a question exhaust options first as I believe that your issues will mostly be rectified with some very obvious answers just sayn hahaha Link to comment Share on other sites More sharing options...
menicing Member 19 Member For: 12y Posted 16/04/17 06:38 AM Author Share Posted 16/04/17 06:38 AM (edited) I actual did change the airflow tables, I didn't adjust the multipliers so that's my bad but it made me go back and double check Edited 16/04/17 06:39 AM by menicing Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 6m 21d Gender: Male Location: Adelaide Posted 16/04/17 06:46 AM Share Posted 16/04/17 06:46 AM Well derr lol , what do you think the multipliers are multiplying haha nar its better to have these questions on here vs do my fully sick wheels poke enough the BF ecu doesn't have the resolution of the FG but with simple interpretation you can scale it to hit the mark have an open mind and look through what the FG engine ( strategy ) is doing and where the BF lacked and make it better with less Link to comment Share on other sites More sharing options...
menicing Member 19 Member For: 12y Posted 16/04/17 07:00 AM Author Share Posted 16/04/17 07:00 AM (edited) Haha yeah, I've modified the airflow and multiplier tables to suit fg but its still doing the stall/hunt deal right at start up, I'll play with the numbers to see if anything helps Edited 16/04/17 07:04 AM by menicing Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 6m 21d Gender: Male Location: Adelaide Posted 16/04/17 07:03 AM Share Posted 16/04/17 07:03 AM You will fine a bunch of different scaled maps from BF to FG and you'll need to work through them all assuming mechanically it's A1 Link to comment Share on other sites More sharing options...
menicing Member 19 Member For: 12y Posted 16/04/17 07:12 AM Author Share Posted 16/04/17 07:12 AM I've done all the SD hi res tables which helped with fuel trimming, cam, spark, with a lot needing to have interpolation to match the different axis. I'm going to be cleaning Tb and pumping through some injector cleaner with a new fuel filter tomorrow to eliminate anything mechanical, after that I'll just start fudging numbers till I find something that helps Link to comment Share on other sites More sharing options...
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