sti752 said:Cobb posted some recommended values for JEC/NISMO 720/740cc injectors. You can find them on COBB's forum under the sti street tuner section. I am using those for now. I need to find a way to fix my fuel injector Boost trim error as we cannot adjust this in Street Tuner.
Sorry it took me so long but here is the tip-in data from the 20g map using JEC 740cc injectors. Sorry about the awkward format but it'll have to do. Hope it helps.
Tip in enrichment:
are you sure you're not overfueling via the enrichment and causing the stft to compensate?WolfPlayer said:My main problem is that I need access to more tables to be able to effectively tune tip in I can watch my wideband and on tip-in the AFR goes rich but then it immediately swings lean I can't feel this when driving. It feels fine. But, the data bugs me. I have modified the tip-in to be almost double the stock values and I still get the lean spike after the large rich spike on tip in. Fact of the matter is that there exists a tip-in decay table. This describes how long the tip-in remains in affect. An algorithm is used to determine the rate of tip-in removal. I need to increase the lenght of time that tip-in is in effect. I have the APS 70mm CAI so that is part of the issue. However, I think others will see this same phenomena if you look closely.
I'm almost sure he is. I increased tip-in and when I went to far, the car would hit rich and then rebound to lean. Since I cant dampen that at the moment, I need to try and find the ultimate "impulse" value that puts it right without creating a reaction.ride5000 said:are you sure you're not overfueling via the enrichment and causing the stft to compensate?
The ECU does indeed add fuel when the engine is cold.RainMaker said:but I think there is a temperature based dimension out there too, since my car definitely has tip-in issues for the first 3-5 minutes of driving that are absent after that.
What's interesting is the highend of your listing.RainMaker said:I use the JECS 720s... That may be the same as the injectors you are using.
Though I am going to try another 10% below 603. I use a blow-through MAF, fwiw.
I've done a couple base maps tonight based off of Ride's advice. I immediately converted back to a stock TPS AE map and started over. On my JECS, my light TPS deltas needed a little extra fuel and my higher deltas needed more fuel too. I know that Daemon on this board ended up giving the higher deltas more fuel too. I remember trying less fuel awhile ago after downloading one of your maps and looking at what you ended up with for the JECS values. I tried those way back then and they didn't work for me - a direct lean spike when cracking the blades wide open. But, I am also using a lower scalar (3700) whereas you used a higher one (4000 IIRC). Cobbs scalar for these injectors is even slightly lower (36XX). I'm also using an injector boost error comp map that is 70% of stock. I'll continue to log with my newest map and report back. With Ride's advice I immediately got rid of the rich-to-lean spiking (not that the car felt any different - but I felt better because the logs looked better - roflmao).RiftsWRX said:What's interesting is the highend of your listing.
Granted, it's a blow through setup. But, typically on a JECS/NISMO injector, you have a trend where the light TPS deltas need extra fuel, and the higher deltas need significantly less (if not you see massive enrichments suddenly tipping into WOT).
FWIW, I'm not using that mapping anymore. It appeared to improve some things, but I was never 100% happy with it. Then I ran out of time to play (especially with lots of base map changes). I'm eagerly anticipating your new values.WolfPlayer said:I know that Daemon on this board ended up giving the higher deltas more fuel too.
there is definitely a 3-d tps/ect map on my ecu image. i had to use xmlwrite to pick it up off my base a4tc101l rom (my03 usdm wrx).RainMaker said:The problem also is that as far as I can tell there is the single dimension of TP delta... but I think there is a temperature based dimension out there too, since my car definitely has tip-in issues for the first 3-5 minutes of driving that are absent after that.
Ive added another 20 to the lower 5 values and then blended that in.Rainmaker said:What you say appears to be totally true.
Please consider my Tip-In values "Under Construction"
Boy is that the truth. Sometimes I wonder if the LC-1/XD-1 guage is a curse. The car probably runs quite well, but I cant stand the guage swinging around and I probably "feel" what it is saying even when its not noticible.WolfPlayer said:(not that the car felt any different - but I felt better because the logs looked better - roflmao).