Disable high Rev cold start

[Kodename47]

Originally Posted by FISHBURGLAR

i dont have the tables for maf ofset and im nervous to add it on my XMLS thats my issue i dont want to brick my ECU and im using the newest DEF from open flash

I posted the defs for you above....

[rjgough95]

Originally Posted by FRSBRZGT86FAN

Mine does the same it's the side effect of the extra rpms just allow it to warm up more or lower the rpms....

What exactly do I need to lower to make this happen then? Like what tables exactly? If I drop the rpms does anything else have to be adjusted as well?

[FISHBURGLAR]

Originally Posted by Kodename47

I posted the defs for you above....

THANK YOU THANK YOU! .i missed your post. thanks to using my phone at work

[FRSBRZGT86FAN]

Originally Posted by rjgough95

What exactly do I need to lower to make this happen then? Like what tables exactly? If I drop the rpms does anything else have to be adjusted as well?

No simply adjust the table A-F for the idle tables, because you already adjusted the maf stuff.

[rjgough95]

Originally Posted by FRSBRZGT86FAN

No simply adjust the table A-F for the idle tables, because you already adjusted the maf stuff.

Any recommendations on how i should set it up? Thanks!

[FRSBRZGT86FAN]

Originally Posted by rjgough95

Any recommendations on how i should set it up? Thanks!

You still want it to warm up up to 122 quickly, so from -40 to 122 keep it at 1400 rpm, then from 140 to 176 use 1000 rpm, this should decrease the amount of pulling the car has when you set off. This should also help you notice when the motor is at 122 because you'll notice the idle drop at which point you may set off.

[FISHBURGLAR]

THANK YOU for posting the DEF and thanks to steveaswell. COLD start is Perfect. time to put my mxp exhaust back on heehhe

[rjgough95]

Can someone check this over please that'd be great. Thanks! 140 I changed to 1150 and 158, 176 to 1000. Reason for that is because of a worry I had with my automatic transmission.

[Pointmutation]

Spent all weekend reading through this thread and any cold start related thread I could find. Thanks for all the info everyone!! I'm in a '16 BRZ running a stage 1, 91 octane F40C rom.

My original values for the 91oct Stage 1 F40C rom...


FYI, all the tables where there for me using the defs from OFT's website, at least for F40C. I guess they added those in now??

My modded values...


What I did...
Changed all the Ignition Timing Post Start to -4. Will try 0 later on and see how that sounds.
Changed rows 1 and 2 to match the rest of the rows in MAF Correction After Start (in gear and neutral).
Changed Idle Speed Targets A-F that were greater than 1200 to 1200.
And disabled the P050b DTC.

Double and triple checked work, uploaded modded rom to OFT, flashed the car, and started up while the car was still cold and success! A major drop in cold start noise. Exhaust is still going to be heard by my neighbors, but shouldn't piss them off as much if I need to idle a bit before leaving. FYI, high 70's F would be a 'cold' start where I am. Lol.

[vietspride70]

Originally Posted by Pointmutation

Spent all weekend reading through this thread and any cold start related thread I could find. Thanks for all the info everyone!! I'm in a '16 BRZ running a stage 1, 91 octane F40C rom.

My original values for the 91oct Stage 1 F40C rom...


FYI, all the tables where there for me using the defs from OFT's website, at least for F40C. I guess they added those in now??

My modded values...


What I did...
Changed all the Ignition Timing Post Start to -4. Will try 0 later on and see how that sounds.
Changed rows 1 and 2 to match the rest of the rows in MAF Correction After Start (in gear and neutral).
Changed Idle Speed Targets A-F that were greater than 1200 to 1200.
And disabled the P050b DTC.

Double and triple checked work, uploaded modded rom to OFT, flashed the car, and started up while the car was still cold and success! A major drop in cold start noise. Exhaust is still going to be heard by my neighbors, but shouldn't piss them off as much if I need to idle a bit before leaving. FYI, high 70's F would be a 'cold' start where I am. Lol.

well done......I just got 2016 and notice a cold start on this thing with exhaust is loud.
after read through this thread, I still have no clue where to start....

[Travisty75]

Originally Posted by Pointmutation

Spent all weekend reading through this thread and any cold start related thread I could find. Thanks for all the info everyone!! I'm in a '16 BRZ running a stage 1, 91 octane F40C rom.

My original values for the 91oct Stage 1 F40C rom...
(Image)

FYI, all the tables where there for me using the defs from OFT's website, at least for F40C. I guess they added those in now??

My modded values...
(Image)

What I did...
Changed all the Ignition Timing Post Start to -4. Will try 0 later on and see how that sounds.
Changed rows 1 and 2 to match the rest of the rows in MAF Correction After Start (in gear and neutral).
Changed Idle Speed Targets A-F that were greater than 1200 to 1200.
And disabled the P050b DTC.

Double and triple checked work, uploaded modded rom to OFT, flashed the car, and started up while the car was still cold and success! A major drop in cold start noise. Exhaust is still going to be heard by my neighbors, but shouldn't piss them off as much if I need to idle a bit before leaving. FYI, high 70's F would be a 'cold' start where I am. Lol.

Just wanted to bump this up and comment about my setup.

I didn't see your values here, but mine is setup very closely to yours. I had read earlier in the thread that people were saying to not copy the MAF offset values because they'd be too low, but I selected all the high tables, multiplied by .8, then horizontally interpolated to have a more smooth ramp effect as the car warms up. It works great!

There is still an initial bark when the car initially catches, but it immediately settles down to 1000rpm (my only tables above 1000 are down near 15°f). I'm going to try playing with the initial Cranking Injector Dwell setting to see if I can get the car to stay below that 1000rpm mark, but I was playing around with that before and it had a poor side effect of causing an extended crank before firing.

Anyways, @Pointmutation you have it set up right and now there is absolutely no cold start high idle. Job good!

[Pointmutation]

Originally Posted by Pointmutation

What I did...
Changed all the Ignition Timing Post Start to -4. Will try 0 later on and see how that sounds.
Changed rows 1 and 2 to match the rest of the rows in MAF Correction After Start (in gear and neutral).
Changed Idle Speed Targets A-F that were greater than 1200 to 1200.
And disabled the P050b DTC.

Update on this... I got headers now and had to change the Ignition Timing Post Start to 0. Before the headers, setting it to zero sounded a little anemic so I had kept it at -4. Post header install, zero sounds better than before but not as loud as -4 without headers. So you can still tell there's an exhaust, but more so I'm not pissing off the neighbors leaving the house late at night/early morning hours as much anymore.

[D_Thissen]

Originally Posted by Kodename47

I posted the defs for you above....

Just to confirm, these are safe to use with the OTS (AO1C) v2.06X maps? Just replace the XML def in romraider with these instead of the ones provided by shiv, correct?

[Kodename47]

Originally Posted by D_Thissen

Just to confirm, these are safe to use with the OTS (AO1C) v2.06X maps? Just replace the XML def in romraider with these instead of the ones provided by shiv, correct?

I will assume that those are still based on the B01C ROM, if so then yes.