Hello All!
Pretty new to all of this but I have my AFE Momentum intake installed on my 2013 Si with a cat back exhaust. Running Flashpro and I've started to play around with a calibration that seems to have the car running a lot smoother then the stock tune with the intake. This tune feels good but throws a code saying its running rich but the check engine light will turn off for a couple days and then back on here and there. It also seems to idle a little low and rough when the check engine light it on so I'm thinking it might be running rich on the idle here and there?
I started with the "MAF tune" since I thought I'd read it was a good starting point with basic mods. I'm hoping someone has a calibration file that would work better for this intake seems fairly popular, I don't have a ton of time to go back and forth experimenting with tuning because of my work schedule right now, but I have to keep driving at the same time. I really want to learn more about tuning when I get more mods but I'm hoping I can find a simple solution and make sure I'm not damaging my engine.
I've read through forums and seen other people with similar setups and issues but someone's gotta have a calibration file that will work for me. Any help would be appreciated!
2013 Si Calibration for AFE Momentum
Re: 2013 Si Calibration for AFE Momentum
A MAF tune will most likely not be ideal since the housing in which the MAF is mounted has been modified. It might work okay, but a speed density tune using the MAP sensor would probably yield better results.
Oddly enough I am working with a guy that has the AFE intake and exhaust. The tune is coming out very well, if you want to give it a shot let me know. You still need to datalog and see how it acts on your car. So we would need 20-30 minute datalogs and make a third gear wide open throttle (WOT) pull from 2500-7500 in the datalog to look at WOT fueling.
Oddly enough I am working with a guy that has the AFE intake and exhaust. The tune is coming out very well, if you want to give it a shot let me know. You still need to datalog and see how it acts on your car. So we would need 20-30 minute datalogs and make a third gear wide open throttle (WOT) pull from 2500-7500 in the datalog to look at WOT fueling.
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simmulator
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Re: 2013 Si Calibration for AFE Momentum
Hey EFICU, Sounds great! I can probably pull off a fresh datalog this weekend, definitely down to try it out if its working for your client so far!
Re: 2013 Si Calibration for AFE Momentum
Okay sounds good. Whenever you throw it in, make a datalog right away and post it so I can see it. Don't go out and beat on it until we see some data from the first datalog. Once you load it, make a 20-30 minute datalog with normal stop and go type driving, and one WOT pull in third gear from 2500-7500. It will be close from the get go, but I still like to look over a normal datalog before you have too much fun with it.
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simmulator
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Re: 2013 Si Calibration for AFE Momentum
Will do! Thanks for the help with this, should have something by the weekend.
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simmulator
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Re: 2013 Si Calibration for AFE Momentum
Just went for a quick rip around town, got a decent 3rd gear pull in. Looks like the AF ratio is good but some knocking happening. Any further assistance would be greatly appreciated, thank so much for the help so far!
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Re: 2013 Si Calibration for AFE Momentum
Looks really good for a start. The knock were in the typical range for these, so very normal. I removed some timing there and cleaned up some of the part throttle fueling, as well as the WOT fueling. WOT fuel was very close, just tightened it up a little bit along with the part throttle fueling.
In this next one, try to find an area to do more stop and go type driving. You have a lot of steady speed driving in this one which populates very little info. If possible, find some driving areas where you stop and go a lot, and try to run the rpms up to say 4500-5000 before you shift. The more rpm range you drive in the more data we can get basically. Plus you can have more fun with it in this one. Still shoot for 20-30 minutes in length, and the third gear WOT pull from 2500-7500, other than that though you can have more fun with it now.
In this next one, try to find an area to do more stop and go type driving. You have a lot of steady speed driving in this one which populates very little info. If possible, find some driving areas where you stop and go a lot, and try to run the rpms up to say 4500-5000 before you shift. The more rpm range you drive in the more data we can get basically. Plus you can have more fun with it in this one. Still shoot for 20-30 minutes in length, and the third gear WOT pull from 2500-7500, other than that though you can have more fun with it now.
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simmulator
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Re: 2013 Si Calibration for AFE Momentum
The second tune is feeling great! Started a little rough at first but seems to have sorted itself out. Feels more responsive and linear acceleration with no lag spots that I can tell anyways. 3000-4000rpm was sometimes a little sloppy with my previous MAF tune. Hopefully the second datalog provides more insight for further tweaking. Much thanks, cant even say how grateful I am for the help right now.
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Re: 2013 Si Calibration for AFE Momentum
Yeah any time the MAF isn't scaled properly or the fuel tables are optimized in a speed density tune, it will usually feel a little off or not as smooth as it should be. Each revision should get a little better as we go as it's always a bunch of little things that make it a little better.
So that one looked good. Still working on a couple areas of the idle fuel and part throttle. Also made some adjustments to the temp compensation tables to get things better through different temps. It's super close though, I'm just nit picking really. I made a few adjustments for the knock as well. We should be there on this, but it might take another one if it shows knock in the same area. We'll see.
Same datalog and driving style as that last one, it was really good and populated a lot of data.
So that one looked good. Still working on a couple areas of the idle fuel and part throttle. Also made some adjustments to the temp compensation tables to get things better through different temps. It's super close though, I'm just nit picking really. I made a few adjustments for the knock as well. We should be there on this, but it might take another one if it shows knock in the same area. We'll see.
Same datalog and driving style as that last one, it was really good and populated a lot of data.
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simmulator
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Re: 2013 Si Calibration for AFE Momentum
Alright! Started much smoother this time, idle seems better. Honestly feels great all around as far as I can tell. Laptop quit recording for some reason so I had to pull the log off the flash pro, hopefully works all the same.
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Re: 2013 Si Calibration for AFE Momentum
That one looked really good, we were so close. Had a couple knock happen on a fifth gear acceleration, so I touched up the timing there to hopefully stop that. It's not the end of the world to have it knock there, but we still want to aim for zero knock. Fueling looked good. That was your coldest datalog I have seen, so I touched up the WOT fuel through the air temp compensations and they went a little rich due to the air temp. We will see how it looks though, overall it looks great, and you're happy with it, so we're on the right track. Just working on the last 1% to get it dialed.
Same datalog and driving style. And, datalog drawn from the FlashPro are actually better than from a laptop. Hondata designed the FP to sample a lot faster than a laptop can, so they get us more data actually. So, if you want to still have your laptop open and watch everything, but capture and send the dartalogs from the FP that would be great. Either way though, it's up to you.
Same datalog and driving style. And, datalog drawn from the FlashPro are actually better than from a laptop. Hondata designed the FP to sample a lot faster than a laptop can, so they get us more data actually. So, if you want to still have your laptop open and watch everything, but capture and send the dartalogs from the FP that would be great. Either way though, it's up to you.
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simmulator
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Re: 2013 Si Calibration for AFE Momentum
Tried to rip a quick one this morning but there was some traffic to dodge around so I wasn't able to have as much fun but got the 3rd WOT pull in again. Hopefully this helps. Noticed it idled a little low when I started it back up after doing this run, seemed to correct itself again. Also I'm in southern Ontario so cold starts can definitely get pretty cold!
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Re: 2013 Si Calibration for AFE Momentum
Overall it looked good. Had a couple knock come back in a fourth gear pull in the main area of knock on these. So I made some ignition changes for that. So keep testing it for the third gear pulls and the fourth gear pulls.
All the idle settings are the same as OEM since Honda put so much effort into those. But we can keep an eye on them as you mention. Main thing is capturing it in a datalog so I can see your concern. For that, press the datalog button on the FlashPro before you start it and then note if you had that idle issue so I can look it over. All the compensations go by coolant and air temp, so those I need to know to make any adjustments for you.
Here is the next one. We're really close, we'll see how knock looks on this one, fuel is trending very good. Oh, I moved vtec up to 5000rpm in this one to see what you think. It might work a little better there, but test it out and see how the crossover feels moved up 400rpm.
All the idle settings are the same as OEM since Honda put so much effort into those. But we can keep an eye on them as you mention. Main thing is capturing it in a datalog so I can see your concern. For that, press the datalog button on the FlashPro before you start it and then note if you had that idle issue so I can look it over. All the compensations go by coolant and air temp, so those I need to know to make any adjustments for you.
Here is the next one. We're really close, we'll see how knock looks on this one, fuel is trending very good. Oh, I moved vtec up to 5000rpm in this one to see what you think. It might work a little better there, but test it out and see how the crossover feels moved up 400rpm.
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simmulator
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Re: 2013 Si Calibration for AFE Momentum
Awesome, thanks for doing this and being so responsive. I've got a little work trip happening this week so I'm not sure if I'll be able to get another proper datalog over the next few days but if I can sneak a little run in I will. Really appreciate it, will get back to you as soon as I can!
Re: 2013 Si Calibration for AFE Momentum
No problem, happy to help you guys get going. Yeah whenever you get one we'll take a look at it. It's in a really good place now, we're just splitting hairs and tinkering with it. Keep me in the loop.