+9psi map for CVT

Civic 2016+ 1.5 Turbo
janemar
Posts: 59
Joined: Sun Sep 17, 2017 4:24 am

Re: +9psi map for CVT

Post by janemar » Mon Nov 13, 2017 7:49 am

Just to update this thread.

I finished up with my tune on my car. Here are my thoughts.


1. +9psi(or 24psi) tune is a misnomer.

For us CVT users running on 92octane(100RON.) In reality, you would like to add +9psi(24psi) from 4000rpm upto 5500rpm only and quickly drop it to +6(21psi) upto redline or around 6000rpm.

The reason is, I found that running higher than 21psi after 5500rpm is simply killing power MAYBE because of how small our turbo is and also how narrow and short the exhaust ports for this 1.5T. It produces too much heat, back pressure and killing power in the process.

You'll better of lowering the boost as much as 18psi at 6000rpm and just play / raise ignition timing(knock ign retard.) I don't have dyno to back this up but I can see it in my log and using my butt feel. LOL.


2. As mentioned above, timing is key! Don't be overwhelmed by how much high of a boost your neighbors' civic is running. Again, LOWER boost with HIGH ignition timing is way more powerful than sky high boost with high ignition retard. Don't be afraid to raise those timings up, just keep an eye on the K.Control. If it shoots up higher than 80% then back down your timing, repeat.


3. AFR is a bit forgiving in these 1.5T mills. 10.7 up to 12 AFR won't give that much of a power difference. I personally run 10.7-10.9 OR maybe it is just the ECU trying to relearn my AFRs and want to set its own afr mapping. Again, based on my but dyno only. Hondata or anyone can school me on this if you deem fit.

4. If you track your car alot, like weekly or monthly and you live in a humid and hot climate(like mine here in Philipines.) I suggest you run +3psi tune max! Running even the supplied +6psi map bli dly and calling it a day is stupid to say the least especially if you beat it on the track. First to raise is IAT, ECT and most probably oil temps and next thing you now, your turbo is toast or what not.

If you want to run +6psi map on a hot track, at the very least, monitor your IAT2 and ECT temps using the bluetooth phone app. Back down if it reach 60C or 140F.

There's a lot of topspeed runs posted on youtube with this new 1.5T civic. You can notice the water temp gauge raise, on some extreme vids, it is nearing Hot mark.

Jun43
Posts: 251
Joined: Mon Aug 01, 2016 2:59 pm

Re: +9psi map for CVT

Post by Jun43 » Mon Nov 13, 2017 9:56 am

i'm running 27psi after 4000rpm running at +2-3ign with no heat stroke problem. I also dont live somewhere where its 100F+ all the time. sounds like you need an aftermarket intercooler

janemar
Posts: 59
Joined: Sun Sep 17, 2017 4:24 am

Re: +9psi map for CVT

Post by janemar » Mon Nov 13, 2017 10:51 am

Jun43 wrote:
Mon Nov 13, 2017 9:56 am
i'm running 27psi after 4000rpm running at +2-3ign with no heat stroke problem. I also dont live somewhere where its 100F+ all the time. sounds like you need an aftermarket intercooler
Yes, big + if you live in colder weather. Also, have you tried doing and datalogging a 140-150mph pull? That's were the heat problem usually comes up. A stock tune or +3psi will get you to those speeds without or less increase in IAt and ECT but of course slower versus +6 or +9psi tune with the trade off of higher IAT amd ECTs.

A couple of 0-60 or rolling 100mph pulls isnt an issue for me as well even when I played with 25+psi.

Jun43
Posts: 251
Joined: Mon Aug 01, 2016 2:59 pm

Re: +9psi map for CVT

Post by Jun43 » Mon Nov 13, 2017 11:51 am

No i haven't done any pulls that goes to 140-150mph. The car does not make enough power to reach that high on most race tracks. if you planning to do that often going that fast. I would add an oil cooler too if this is a race car

janemar
Posts: 59
Joined: Sun Sep 17, 2017 4:24 am

Re: +9psi map for CVT

Post by janemar » Mon Nov 13, 2017 11:14 pm

Jun43 wrote:
Mon Nov 13, 2017 11:51 am
No i haven't done any pulls that goes to 140-150mph. The car does not make enough power to reach that high on most race tracks. if you planning to do that often going that fast. I would add an oil cooler too if this is a race car
No, I have a completely stock car. I just happen to be a curious guy that loves track days, high speed driving(we really dont have "speed limits" back here on our tropical 3rd world land. LOL.)

I understand your concerns and appreciate all the suggestions you gave from the start. Those will be on the pipeline together with the ethanol sensor...


Bottoline is proper education... My intention is to provide guidance on 1000+ FP users that are running +6psi or custom high power tunes with bonestock Intercooler, radiator, no oil cooler, etc. which I assume is the majority of users here.

A couple of dyno run, or 0-60s, 0-100s pulls, merging to freeway or overtaking semis wont hurt your car. BUT, if you are careless and just beat the hell out of it. You can potentially damage something. If you want it to play safe and don't know what your doing, better to reflash back to stock or just run the +3psi. Track days and topspeed tested already, it won't heat up your ECT and IAT that much and you can beat the hell out of your car longer(crucial if you want to familiarize yourself on the track or you just enjoy driving hard continuously without thinking much about the temps.,) hence more forgiving to your engine.

https://www.youtube.com/watch?v=JceDg3OgwZU

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