Does OFT raise rev limiter?

[nunonuna]

Originally Posted by Shiv@Openflash

Nice! Do you know what a stock FRS puts down on that Dyno Dynamics dyno?

I think Dynosty's dyno dynamic read 153.7 whp base fr-s.

[KonTheory]

Originally Posted by nunonuna

I think Dynosty's dyno dynamic read 153.7 whp base fr-s.

If thats the case I feel much better about 179.7

I was really hoping to crack the 180... but the guys there said it would have been a little higher if it wasnt so hot out..

[nunonuna]

Originally Posted by KonTheory

If thats the case I feel much better about 179.7

I was really hoping to crack the 180... but the guys there said it would have been a little higher if it wasnt so hot out..

I will also try to dyno mine next Saturday which is gonna be same dyno, but I dont know what number its gonna show because the shop im visiting always shows lower reading than what other people get from other dyno shop with same dyno. will see how mine comes out.

[mid_life_crisis]

So I finally started looking at the tables. Can someone who understands tuning explain what has to be done to increase the rev limit? There is obviously a rev limit setting, and you need to add additional lines to other tables. Which tables need to be extended? I found that the ignition tables get altered so the highest rpm is listed as the target, but why is the timing changed to be a negative value? As rpm increase, shouldn't the timing continue to advance, or at least stay stable?

[steve99]

Originally Posted by mid_life_crisis

So I finally started looking at the tables. Can someone who understands tuning explain what has to be done to increase the rev limit? There is obviously a rev limit setting, and you need to add additional lines to other tables. Which tables need to be extended? I found that the ignition tables get altered so the highest rpm is listed as the target, but why is the timing changed to be a negative value? As rpm increase, shouldn't the timing continue to advance, or at least stay stable?

The timing reduction is part of the soft rev limit as is the reduction in delta from 350 to 50 rpm in the rpm limit/fuel cut tables

[JB86'd]

@steve99 @Shiv@Openflash reducing the rev limit back to 7500 wouldn't require making any other changes correct? and disabling LC and FFS simply requires setting all associated tables to 0 right?

[steve99]

Originally Posted by JB86'd

@steve99 @Shiv@Openflash reducing the rev limit back to 7500 wouldn't require making any other changes correct? and disabling LC and FFS simply requires setting all associated tables to 0 right?

for the LC & FFS yes just set the delta=0 for both

The rev limit will require some changes to a couple of tables to get it to work correctly

Base timing B will need the RPM axis changing from 7600 to 7500 and next one from 7450 to 7350

Then the Rev Limit Fuel Cut values from 7600 to 7500 and 7550 to 7450

ie take 100rpm off those 4 values. should do it.

[JB86'd]

Originally Posted by steve99

for the LC & FFS yes just set the delta=0 for both

The rev limit will require some changes to a couple of tables to get it to work correctly

Base timing B will need the RPM axis changing from 7600 to 7500 and next one from 7450 to 7350

Then the Rev Limit Fuel Cut values from 7600 to 7500 and 7550 to 7450

ie take 100rpm off those 4 values. should do it.

Thanks a ton! @Shiv@Openflash can you confirm this is all that's needed to lower the rev limit safely?

[JB86'd]

Originally Posted by steve99

for the LC & FFS yes just set the delta=0 for both

The rev limit will require some changes to a couple of tables to get it to work correctly

Base timing B will need the RPM axis changing from 7600 to 7500 and next one from 7450 to 7350

Then the Rev Limit Fuel Cut values from 7600 to 7500 and 7550 to 7450

ie take 100rpm off those 4 values. should do it.

So it looks like Base Timing A is set at 7400..should I lower it to 7350 or 7300? Lowered Base Timing B to 7500.

[steve99]

Originally Posted by JB86'd

Attachment 87037

So it looks like Base Timing A is set at 7400..should I lower it to 7350 or 7300? Lowered Base Timing B to 7500.

no need to touch the BASE TIMING A it only used for limp home mode I believe :-)

[JB86'd]

Totally misunderstood you @steve99 I think I've got it now! Thanks for your knowledge and help

[steve99]

Originally Posted by JB86'd

Attachment 87044

Totally misunderstood you @steve99 I think I've got it now! Thanks for your knowledge and help

No worries mate, looks sorted now

[mid_life_crisis]

Originally Posted by Shiv@Openflash

It can certainly be implemented just by copying the ignition A and ignition B tables (and rev limit values) over from the 6MT map. But to be honest, I don't usually do things like that on Auto cars. Sometimes applying soft rev limits can have an impact on shifting performance when in automatic mode.

I tried implementing the soft rev limit and it works beautifully. I haven't noticed any difference in shifting when the car is left in automatic mode after several days of driving.

[phrosty]

Originally Posted by mid_life_crisis

I tried implementing the soft rev limit and it works beautifully. I haven't noticed any difference in shifting when the car is left in automatic mode after several days of driving.

I also use the soft rev limit. I did notice a couple times if I'm up around 7600, it seems to take about twice as long to shift as normal. Our power band peaks before that in NA so not really a big deal, but with FI it might present an issue.