what wideband are you using? and when you say backfire was it loud or more of a gurgle?So I got the new one loaded and data logged a startup idle to the driveway to wash it. I'm taking it out later to a get together and will data log that as well. The startup had some popping (backfiring, popping in exhaust) in the first 20-40 seconds then calmed down. Seemed to surge more than before, but I'll let you know driving data logs later tonight.
I made some small changes to the idle control and added a small amount of fuel to the startup... keep me informed about that odd backfire at idle when at cold start.So I got the new one loaded and data logged a startup idle to the driveway to wash it. I'm taking it out later to a get together and will data log that as well. The startup had some popping (backfiring, popping in exhaust) in the first 20-40 seconds then calmed down. Seemed to surge more than before, but I'll let you know driving data logs later tonight.
Was this with rev1.4?Attached are the logs from the drive to the meet and then again on the way home. Nothing big to report, still some surging during warm up and at stop lights but not horrible. The 2nd one has some 2nd/3rd gear short pulls at the end of it but I was on city roads near home so nothing too big.
We are making progress, with the new iac in place the idle gain may change a bit but hopefully not much.Yes, the latest one your provided.
Let me know when your car is road worthy again, i will do an update for you then.Ok, got the new TB on but haven't driven it yet. The first data log I forgot to calibrate the new TPS settings since I replaced the TB so the idle never came down as it thought it was at like 5% open TPS. I shut it down and calibrated it, then started it back up and let it idle and it's in the right RPM range but lots of surging. That said I can already tell the new TB gives it much better throttle response and it's not trying to stick closed like the old stock one did. New steering parts will be here next week so not a lot of driving till then as the pump is louder than the car.
@twohawks777@cox how is the car coming along? haven't heard from you in awhile.
gotcha I will try and tune it down as close to stock idle as possible, however, there will always be a small amount of oscillation in the idle.
ohhh.... lol well i will get back to you a bit later, i think the last thing i did was send a tune right? if so i need a datalog from it.We left off here.Awaiting your instructions. I thought you were going to send another tune. I don't move until you tell me too. LOL. Been patiently waiting. In no rush. The car has only been sitting since 2014. Lol
ohhh.... lol well i will get back to you a bit later, i think the last thing i did was send a tune right? if so i need a datalog from it.
Let me know when your car is road worthy again, i will do an update for you then.
I see you have to keep your foot on the throttle to make it run during warmup. Hopefully this tune will fix that, i increased the idle timing but the way i have it written the idle timing will not engage unless the TPS is below 2%..
The surge is not the idle valve i have it set so it will move to a set position based on coolant temp, rule that out we have fuel and timing. im thinking this increase in timing will help.
With this tune once the car is warm unplug the iac valve and set the base idle as low as you can without the car stalling. i want to see if unplugging the iac stops the surging.Still had to apply some throttle during and after start for a few of minutes. After car warmed up some surging decreased. Getting some backfiring over 4 grand RPM.
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