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Showing results for tags 'LC-1 noise issue Megasquirt'.
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Well guys i've logged about 200 miles since i've gotten up and running and have hit a wall. I have 2 issues and have some questions I hope the seasoned guru's can help me with. The goods Stock L28ET 1982, using stock distributor. Stock low z injectors Megasquirt II V3.57 with MSII extra serial 321 Megasquirt relay board GM IAT sensor Using stock head temp for CLT LC-1 wideband O2 sensor. MSA downpipe into all 2.5 inch exhaust with magnaflow muffler Walbro fuel pump I got a basic tune that was ok to drive. Pulls hard in boost but my AFR's are all over the place!!! Never leaning out in boost though, always in the 12's or lower. The car bucks at cruising speed say 2500 rpm, the EGO has no clue what to do at all because of it, which i've totally turned off EGO, and totally stepped it up and it really doesn't change what its doing. In addition I'm getting an error. "Settings Configuration Error, TunerStudio is online Correct Settings and Power Cycle the controller. Reported Setting error Serial problem---noise---possible cable or computer hardware problem, you must correct this error then power cycle the controller" This happens every time I try to datalog anything now. All my relay board grounds for MS and my ground for my LC-1 is on the battery. I bought a Deka intimidator AGM with marine terminals so I have my main starter and block/chassis grounds on one set of terminals and the MS wiring on the threaded marine terminals. I've routed all the wiring as far away as possible for the LC1 from anything else I could. The only wire I can't really get out of the way from others is the signal wire to the MS relay board from the LC1 controller. You simply just can't space it very far away just due to its nature of design. i'm not saying there is a single thing wrong with it i'm just saying I have done my due diligence trying to eliminate my issue. I've unplugged the alternator also just trying to troubleshoot. All my other readings are pretty decent, a few ripples here and there but no where near as bad as my AFR's they look more like a heart monitor than an AFR reading. However unlike a heart monitor i'm searching for a much flatter line LOL Things I've done. I have reprogrammed the LC-1 to its lowest lag I think it was 1/3 a second. Free air calibrated it out of the exhaust twice. I also read a thread that people put a capacitor on the positive feed wire to the LC-1 controller so I bought one at radioshack, the 4200uf i think like 35v and installed. I've also played with noise filtering and lambda delay or % in tunerstudio up to the 90 range and it still is fluttering. None of this corrected the issue. Sorry for the long winded post but I wanted to be as descriptive as I could of what i've done. The option for posting the topic isn't allowing me to go to advanced and post the datalog, not sure if its still where they are tweaking the site or what. I can PM it to anyone willing to help.