Search found 58 matches

by ayau
Thu Dec 03, 2020 12:19 pm
Forum: Accord 2008+ FlashPro
Topic: Questions regarding Accord 2018+ tuning strategy
Replies: 0
Views: 2523

Questions regarding Accord 2018+ tuning strategy

Similar to the FK8 ECU, it looks like there's a torque limit table for the 2018+ Accord ECU. In order to allow more timing and boost, you would have to increase these limits. Is that correct? Different from the FK8, there isn't a torque request table. How does the Accord ECU know how much torque to ...
by ayau
Mon Oct 12, 2020 9:26 am
Forum: RDX 2007-2012
Topic: 2019+ RDX tuning
Replies: 2
Views: 5748

Re: 2019+ RDX tuning

Another question. Do you know if the RDX/Accord are running full time air/fuel closed loop?
by ayau
Sat Oct 10, 2020 11:42 am
Forum: RDX 2007-2012
Topic: 2019+ RDX tuning
Replies: 2
Views: 5748

2019+ RDX tuning

I’m considering picking up a 2019+ RDX and adding Hondata to it. It looks like there aren’t a lot of people talking about the tuning of this platform, so I have a few questions. Is the engine and transmission basically the same as the 2.0T accord with the 10 speed? If it is, is it safe to assume the...
by ayau
Tue Aug 18, 2020 1:13 pm
Forum: RDX 2007-2012
Topic: 2019+ flex fuel support
Replies: 1
Views: 5959

2019+ flex fuel support

Will the 2019+ RDX eventually receive flex support tables? Is the RDX ECU very similar to the 2.0 DI Accord ECU?
by ayau
Sun Aug 16, 2020 2:28 pm
Forum: Civic Type R 2015+
Topic: New Traction Control
Replies: 30
Views: 15453

Re: New Traction Control

I think increasing slip % will just reduce the interference with the factory VSA system, but the VSA will engage just as early. I’m not really sure if having the 2 systems running at the same time is good or bad overall. Sorry increasing the slip % is the solution? I’ve been told to reduce torque i...
by ayau
Sun Aug 16, 2020 2:10 pm
Forum: Civic Type R 2015+
Topic: New Traction Control
Replies: 30
Views: 15453

Re: New Traction Control

I think increasing slip % will just reduce the interference with the factory VSA system, but the VSA will engage just as early.

I’m not really sure if having the 2 systems running at the same time is good or bad overall.
by ayau
Sat Aug 15, 2020 4:27 pm
Forum: Civic Type R 2015+
Topic: Ignition ECU logic
Replies: 9
Views: 5084

Re: Ignition ECU logic

What have you guys been seeing as the "sweet spot" in terms of timing vs boost on ethanol and factory fuel pump? Just playing around with the air charge limit numbers. I've reduced the airC limits pretty significantly in order to force the ecu to use the higher timing values. This is on E3...
by ayau
Sat Aug 15, 2020 4:03 pm
Forum: Civic Type R 2015+
Topic: Ignition ECU logic
Replies: 9
Views: 5084

Re: Ignition ECU logic

So once it calculates the air charge necessary to achieve x torque, it uses the ignition table to apply the defined timing, correct? So in other words, the torque request table is more like a torque limiting table. You set the torque request values high enough so that you can add timing to try to hi...
by ayau
Sat Aug 15, 2020 11:10 am
Forum: Civic Type R 2015+
Topic: Ignition ECU logic
Replies: 9
Views: 5084

Re: Ignition ECU logic

So just to make sure I understand this correctly. The ECU looks at your throttle pedal position relative to current RPM. It then looks at the torque request table, for example, 480Nm. The ECU does a calculation to determine the amount of air/boost and timing it will need. Once it knows the air and t...
by ayau
Fri Aug 14, 2020 10:30 am
Forum: CRV 2017+
Topic: CVT limitation
Replies: 3
Views: 10124

CVT limitation

Honda has a 1,500 lbs towing capacity for the 2017+ CRV. Is CVT reliability a concern for the CRV just like it is for the CVT Civics when increasing torque?
by ayau
Wed Aug 12, 2020 9:09 pm
Forum: Civic Type R 2015+
Topic: New Traction Control
Replies: 30
Views: 15453

Re: New Traction Control

It seems like when you break traction in Sport mode with all driving assists on (VSA, Hondata TC), the ECU will retard ignition as well as close the throttle plate. I'm on the default 3mph 3% slip values. My questions are: 1. Is it possible to just retard ignition but not close the throttle plate wi...
by ayau
Mon Aug 10, 2020 1:38 pm
Forum: Civic Type R 2015+
Topic: S. Trim and L. Trim ECU logic with ethanol
Replies: 3
Views: 4325

Re: S. Trim and L. Trim ECU logic with ethanol

Thanks. So if you wanted to tweak the L.trim to be closer to 0, what would you change? The overall fuel trim?
by ayau
Mon Aug 10, 2020 11:03 am
Forum: Civic Type R 2015+
Topic: S. Trim and L. Trim ECU logic with ethanol
Replies: 3
Views: 4325

S. Trim and L. Trim ECU logic with ethanol

The factory ECU logic for S. and L. Trims seem counter-intuitive. For example, when running the E25 calibration/+13% overall fuel trim with E25 fuel, the L. Trim is pretty close to 0%; S. Trim is about -2%. This is 100% factory and no AFM adjustments. When I increase the fuel to E30 without changing...
by ayau
Tue Aug 04, 2020 12:19 pm
Forum: Civic Type R 2015+
Topic: Tuning on ethanol
Replies: 3
Views: 4910

Re: Tuning on ethanol

I dont see a log posted. do you have a 3rd or 4th gear pull to share? I haven't done too much. I've only tested with E30 without changing anything in the calibration. Fuel trims still look pretty decent. Here's a 4th gear pull. I noticed long term trims are -3. You'd think that if I'm running on th...
by ayau
Thu Jul 30, 2020 11:27 am
Forum: Civic Type R 2015+
Topic: Best map to use on track?
Replies: 1
Views: 3358

Re: Best map to use on track?

Track overheating is a cooling design issue and not really a tune issue. Even the conservative factory tune will overheat on track. You can find various discussions on overheating issues on civicx.com.