Search found 10 matches

by liquid_helix136
Tue May 01, 2018 5:48 pm
Forum: S2000 2006-2009 Americas/Europe/Asia
Topic: From VTEC to part throttle low cam, lean spike.
Replies: 4
Views: 1855

Re: From VTEC to part throttle low cam, lean spike.

Lol what? Sure if i decelerate with my foot off the throttle it will go lean. I'm talking acceleration from high cam tables to acceleration in low cam tables, I get a lean spike / jerk. I can do the same motion, staying in vtec the whole time, or staying out of vtec the whole time, and the car opera...
by liquid_helix136
Wed Feb 21, 2018 7:43 pm
Forum: S2000 2006-2009 Americas/Europe/Asia
Topic: From VTEC to part throttle low cam, lean spike.
Replies: 4
Views: 1855

From VTEC to part throttle low cam, lean spike.

Specs: Custom 4" -> 3.5" -> 3" long tube intake, fuel surge tank running ~stock fuel pressure I'm having a problem where if when I go from high cam tables back down to low cam tables, I will get a lean spike. So if I do any type of VTEC, part throttle or full throttle, then back off the throttle jus...
by liquid_helix136
Wed Oct 12, 2016 4:59 pm
Forum: S2000 2006-2009 Americas/Europe/Asia
Topic: Short Trim causing lean spikes during shifting and startup
Replies: 2
Views: 2069

Re: Short Trim causing lean spikes during shifting and startup

Wonderful news, I got the answer "The tables need to be closer to stoich" on other boards as well. I normally tune my stuff a tad rich so I'm not running lean with weather changes, but this may not be a viable method with this learned S.trim value. Hopefully once the values are tuned closer to stoic...
by liquid_helix136
Tue Oct 11, 2016 6:16 pm
Forum: S2000 2006-2009 Americas/Europe/Asia
Topic: Short Trim causing lean spikes during shifting and startup
Replies: 2
Views: 2069

Short Trim causing lean spikes during shifting and startup

I've got an odd issue and can't seem to find a fix to it. I thought my problem was originally just a poorly tuned map, as it was a bit rich, but now that the map is tuned relatively well, (I like my map values to be a tad rich, and use o2 to lean out the map to stoich) I am still having this issue. ...
by liquid_helix136
Wed Jul 09, 2014 6:58 pm
Forum: K-Pro / KManager
Topic: 2003 S2000 w/ Kpro, AFRs run lean in closed loop
Replies: 4
Views: 1836

Re: 2003 S2000 w/ Kpro, AFRs run lean in closed loop

Is it normal for a low voltage primary o2 sensor code to pop up when you set S.trim to 0%?

Whenever I turn closed loop on and set the S.trim to 0% that code pops up, but when I set the S.Trim to -10/10% the code doesn't show up. Very strange.
by liquid_helix136
Sun Jul 06, 2014 8:50 pm
Forum: K-Pro / KManager
Topic: 2003 S2000 w/ Kpro, AFRs run lean in closed loop
Replies: 4
Views: 1836

Re: 2003 S2000 w/ Kpro, AFRs run lean in closed loop

Thanks for the quick reply! I checked my o2 sensor a couple hours after your response, and found that it was indeed plugged in. I decided to check the ECU harness, and noticed my primary o2 sensor had become depinned! I plugged it back in and closed loop works great now! Also, thanks for the advice ...
by liquid_helix136
Fri Jul 04, 2014 7:04 pm
Forum: K-Pro / KManager
Topic: 2003 S2000 w/ Kpro, AFRs run lean in closed loop
Replies: 4
Views: 1836

2003 S2000 w/ Kpro, AFRs run lean in closed loop

So I have an 03 S2k, the engine is professionally built by Endyn and has low comp (9.5:1) pistons as this engine will be turbo'd soon. Other than that, the car just has intake and 70mm dual exhaust. I dialed in the fueling in open loop and using a modified version of the AP1 stock timing tables. In ...
by liquid_helix136
Sat Sep 07, 2013 6:27 am
Forum: K-Pro / KManager
Topic: KPro / KManager requests
Replies: 121
Views: 46609

Re: KPro / KManager requests

Another feature that I think would be an easy and simple addition to Kpro is having the ECU turn off the A/C at WOT (or over a specified load) that way you never have to worry about losing power due to the Air Conditioning sapping power when at full throttle.
by liquid_helix136
Tue Aug 27, 2013 12:23 pm
Forum: K-Pro / KManager
Topic: KPro / KManager requests
Replies: 121
Views: 46609

Re: KPro / KManager requests

I just started tuning with Kpro on my N/A S2k and while its MUCH easier to tune and runs the car a lot better than the AEM 1052 I had and tuned using AEMPro, theres a couple feature I was upset about not finding in K-Manager. o2 feedback / Closed Loop inhibit This helps prevent the big rich spike yo...