08 FA5 fbo progress

[sam.witte7@gmail.com]

Okay sounds good on the RDXs, I peaked at your injector duty cycle on that last one and it was 86% I think, but we can watch it during the tuning process. Here is the best link to information on fake RDXs I have found https://iconicauto-design.com/blogs/new ... -injectors . If you didn't pay over $300 for all of it, it's probably a fake package. Honestly if it's under $350, I would be suspicious.

If you're going to hold off on the RDXs, are you ready to go through the tuning process now? I know you were having the idle issue, but we can start you on the 0* cam angle and work our way through. If not, just let me know how the idle goes tomorrow and we will go from there. But check out the blog I posted on the RDXs and see what you think.

I’ll check it out!

I’d say let’s start and see where duty cycle stops us. I think I paid $80 or something silly, but it looks like a legit Honda box/sticker. That’s the only part I was skeptical about.

[EFICU]

Gotcha. Yeah at that price, then I would say they are fake. I believe I've had one experience with fake ones, and it was fun. I would make a fuel change for this guy, then the next datalog it was too far off the other way. Make another change, it was way far off the other way. Sort of like putting 8oz of water in a cup, then I look at the cup and it had 12oz. It was so weird. Then I got to thinking, and found this article, then it all made more sense. I've saved three or four guys now from installing fakes ones since. I see the fake ones all over eBay, and it makes me cringe. I don't want you guys to have issues, I want you to have fun with your car.

So here is the first one for the stock injectors. This is the 0* cam angle with vtec at 4500. Take this one for a drive and we will see how it looks. Shoot for 20 minutes like you have been, with the one third gear WOT pull.

And for the future, adding RDXs is an easy change and would only require a revision or two to get it right. Just be sure to let me know before you install them, so I can send you a file for them. We don't have to retune the whole thing. We will watch the injector duty cycle though and see where we end up.

WitteS.SD.V2.Rev01.1 (0Cam)(Vtec4500).fpcal

[sam.witte7@gmail.com]

Gotcha. Yeah at that price, then I would say they are fake. I believe I've had one experience with fake ones, and it was fun. I would make a fuel change for this guy, then the next datalog it was too far off the other way. Make another change, it was way far off the other way. Sort of like putting 8oz of water in a cup, then I look at the cup and it had 12oz. It was so weird. Then I got to thinking, and found this article, then it all made more sense. I've saved three or four guys now from installing fakes ones since. I see the fake ones all over eBay, and it makes me cringe. I don't want you guys to have issues, I want you to have fun with your car.

So here is the first one for the stock injectors. This is the 0* cam angle with vtec at 4500. Take this one for a drive and we will see how it looks. Shoot for 20 minutes like you have been, with the one third gear WOT pull.

And for the future, adding RDXs is an easy change and would only require a revision or two to get it right. Just be sure to let me know before you install them, so I can send you a file for them. We don't have to retune the whole thing. We will watch the injector duty cycle though and see where we end up.

WitteS.SD.V2.Rev01.1 (0Cam)(Vtec4500).fpcal

Sounds good dude! Thank you so much for all of this if I haven’t said so already.

[EFICU]

No problem, you're welcome!

[sam.witte7@gmail.com]

Here ya go!

[EFICU]

Looks great for a start. The idle issue is still there isn't it? That's strange how it happened after the install of the other parts.

Here is the next one, we will now move to the 15* cam angle with vtec at 4500 again. Same datalog and driving style, if you can mix in a little more stop and go driving that would be great. If not, no big deal.

WitteS.SD.V2.Rev02 (15Cam)(Vtec4500).fpcal

[sam.witte7@gmail.com]

A few stops and starts, and then 3rd pull. Went to visit some family an hour away, its all rural though. Drove around my old home town for a bit.

[EFICU]

That's good you made a trip out of it. The datalog looked great, almost like the idle was a little bit better, but maybe not. We will now move to the 30* cam angle, with vtec at 5500. Take this one for a spin when you can. Same datalog and driving style. The injectors seem to be hanging on. We will see in this next one. Being as cold as it is where you are, the injectors are having to add fuel for the cold, so this is a good time to be tuning it for you.

WitteS.SD.V2.Rev03 (30Cam)(Vtec5500).fpcal

[sam.witte7@gmail.com]

I let it run for 10-15 minutes before we headed home, I noticed it wasn’t surging when I came out. It didn’t really do it this morning either. I looked at the duty from the 0* 3rd gear pull, I saw 90%+ :(

[EFICU]

Yeah it's at 89% in this last one, and the 30* will be the highest demand we see. So we will see how it looks. Also, with as cold as your intake temps are, the ECU is adding about 7% fuel in the background to compensate for the cold dense are. If you were more around 86* intake temps, the ECU wouldn't be adding that 7% which results in less duty cycle. Is this about as cold as it gets where you live?

I'm not saying it wouldn't be a good idea to get them, just saying you don't need to stop everything and add them. We'll see how they look in this 30* calibration and see where it lands.

[sam.witte7@gmail.com]

I’m in SE Michigan, winter months get down single digits sometimes negative. Summer tops out in the 90’s.

[EFICU]

How cold is it today, the intake temps are around 23*. But what is the ambient temp, 10-15* or so?

[sam.witte7@gmail.com]

How cold is it today, the intake temps are around 23*. But what is the ambient temp, 10-15* or so?

according to my dash it was 18-23 to and from. The k&n was typically about 22* warmer than ambient. I was 2-5* warmer today when I was paying attention.

[EFICU]

Gotcha. Yeah so at single digit temps let's say, your intake temps would be around 10-15*. The ECU would add another 1-3% more fuel than where we're at now. But we'll see how the 30* cam angle datalog looks when you make it. We can always lean it out for when it's super cold like that and target 13.1-13.2 since the super cold temps would allow for a leaner AFR with no issues. Like I mentioned, we can add the RDXs at any point, whether that be this week or next month, it's very easy to do. So don't feel like you're wasting your time or anything, we don't need to redo all this once you get them. It only takes a revision or two to get it right once you add the RDXs.

[sam.witte7@gmail.com]

Gotcha. Yeah so at single digit temps let's say, your intake temps would be around 10-15*. The ECU would add another 1-3% more fuel than where we're at now. But we'll see how the 30* cam angle datalog looks when you make it. We can always lean it out for when it's super cold like that and target 13.1-13.2 since the super cold temps would allow for a leaner AFR with no issues. Like I mentioned, we can add the RDXs at any point, whether that be this week or next month, it's very easy to do. So don't feel like you're wasting your time or anything, we don't need to redo all this once you get them. It only takes a revision or two to get it right once you add the RDXs.

I just went out and loaded up the 30* and there’s 2 inches of surprise snow. I’ll try to get some logs tomorrow, depending on road conditions.