[RainMaker]

I am continuing to also have a hard time with this. Im working out that the tip-in enrichment gets laid over the fuel that the MAF commands. Because I have a blow-through MAF, the MAF commands a much quicker response that doesnt require much, if any, "catching up". My current issue is that I think my PCM still expects the pull-through MAF dynamics on which to lay the added enrichment. Because over time, my MAF behaves differently, I can get tip in right, say, the first few thenths of a second after throttle change, but then it does something different. This is becoming frustrating, and Im worried that there is no current solution for it outside of finding some really interesting tables with the Tactrix cable/OpenECU stuff.

[WolfPlayer]

I guarantee that there are quite a few tables for tip-in. My 1990 IROC had 8 tables and 2 constants for controlling tip-in. No freaking way that this scooby only has one If you use XMLWRITE and generate a XML file for every table (including unknown tables) then it becomes clear just how much we don't know. I think there are approximately 500 tables in the calibration (give or take). Granted, some of those will be automatic vs. manual (even though we only have manuals).

It sounds like you need access to what I originally wanted (and still want). The decay tables/factors, etc. We need the ability to control tip-in time.

t

[RainMaker]

I've been staring at this a little more.

my car spikes rich then swings lean. This isnt too surprising given that I have a blowthrough and the car should jump to the MAF fueling much more quickly. What Im having an issue with is the swing lean. I can't seem to kill it.

Are we assuming that the PCM "climbs" the Tip-in enrichment table in real time? If it swings rich then goes lean, can we consider that this might be that the low values are rich enough, but the upper values are too lean?

The rest of my tune seems great, but I just CANNOT get this tip-in ironed out, and its beginning to really frustrate me, given that theres a 20 minute time to upload new base-map numbers.

Chris

[WolfPlayer]

Originally Posted by RainMaker

I've been staring at this a little more.

my car spikes rich then swings lean. This isnt too surprising given that I have a blowthrough and the car should jump to the MAF fueling much more quickly. What Im having an issue with is the swing lean. I can't seem to kill it.

Are we assuming that the PCM "climbs" the Tip-in enrichment table in real time? If it swings rich then goes lean, can we consider that this might be that the low values are rich enough, but the upper values are too lean?

The rest of my tune seems great, but I just CANNOT get this tip-in ironed out, and its beginning to really frustrate me, given that theres a 20 minute time to upload new base-map numbers.

Chris

Chris,

I rarely if ever recommend this but Tactrix + OpenECU stuff is going to help you here. First, we're talking 30s for the flash. Second, there's a new table out there for you to play with (tip in vs. coolant temp). Once AP v2.0 is available then this all becomes irrelevant but if you need it ironed out NOW then you need to take a look at what I mentioned.

Regarding tip-in, I think we need to rescale. I think that rescaling will help dramatically in determining what cells we need to modify. There just isn't much resolution. So, to be short - you recommended rescaling and I think you need to do it

I think that you probably just simply hit a point that is too rich and then the STFT pulled it back. You are experiencing what I originally had. Now mine is slightly on the other side ... mine spikes slightly lean and the STFT richens it up. Resolution is what we need here, IMHO.

t

[RainMaker]

Originally Posted by WolfPlayer

Chris,

I rarely if ever recommend this but Tactrix + OpenECU stuff is going to help you here. First, we're talking 30s for the flash. Second, there's a new table out there for you to play with (tip in vs. coolant temp). Once AP v2.0 is available then this all becomes irrelevant but if you need it ironed out NOW then you need to take a look at what I mentioned.

Regarding tip-in, I think we need to rescale. I think that rescaling will help dramatically in determining what cells we need to modify. There just isn't much resolution. So, to be short - you recommended rescaling and I think you need to do it

I think that you probably just simply hit a point that is too rich and then the STFT pulled it back. You are experiencing what I originally had. Now mine is slightly on the other side ... mine spikes slightly lean and the STFT richens it up. Resolution is what we need here, IMHO.

t

Yeah... I still need the Tactrix thing. Scares me though... this whole OpenECU thing

I have totally rescaled the table... so I have the flexibility to do what i need to.

I'll try the basic test of just leaning it up a little to see if the lean swing is the STFTs. If thats the case, I'll be impressed that they are that quick!

Thanks Tim.

[R4ND0M_AX3]

You guys get any further with this?

I'm forcing myself to finally get this stuff done ever since I put the PE850s in last spring. I'll start a new thread about why.

[WolfPlayer]

I am! I rescaled this map I'll post more when I am sure.

t

[crystal_Imprezav]

This is why I don't ever want to buy injectors! Tuning the tip-in would probably drive me insane especially since it is a basemap parameter.

[WolfPlayer]

Originally Posted by crystal_Imprezav

This is why I don't ever want to buy injectors! Tuning the tip-in would probably drive me insane especially since it is a basemap parameter.

Honestly, it really isn't that bad. The car drives great. It's just the data that is annoying. However, if you drove my car you would never know the data was a little weird.

t

[crystal_Imprezav]

Wolf I just ordered my FMIC. Have you installed yours yet? Hopefully it will be here next week and I can do the install and tune in No. VA and we can compare notes.

[WolfPlayer]

Originally Posted by crystal_Imprezav

Wolf I just ordered my FMIC. Have you installed yours yet? Hopefully it will be here next week and I can do the install and tune in No. VA and we can compare notes.

Nope. Dude - I soooo hibernate in the winter. Winter is when I collect mods and then I install them in the spring. Lots of parts hanging around my house now ...

1) APS DR525 (+ cool tube cover and t-bolts)
2) TGV deletes
3) APS Inlet Pipe
4) APS Fuel Rails (that's right baby! - rofl)
5) NextGear Thermoshield intake gaskets

I'm also trying to aquire a spare STI intake manifold/TB for porting and an aeromotive fuel pressure regulator. Ultimately, I would like to assemble a full setup (ported intake manifold, ported TB, APS rails, TGV Deletes, gaskets, etc.). It would be nice to unbolt my full stock piece and then bolt on the new setup (and not have to chop off the fuel pressure regulator, etc).

If you are doing the install in Northern VA - please let me know. That's only like 1.5hr drive for me. I'd come down and help out with the install (as long as there is some heat somewhere because I'm such a pu55y in the cold).

t

[crystal_Imprezav]

Will do, ive been trying to get my hands on a used set of tgv so I can get then deleted w/o the downtime. Im also p&p my stock exhaust manifolds sometime soon and getting them coated. APS inlet on the way as well haha seems like we have a lot in common. I also just bid on a used intake manifold yesterday on ebay for like $75. Im also looking into a JDM manifold so that I can eliminate the need to the TGV's and also go top feed injectors. Ill let you know when I get to the FMIC install. Shouldn't be too bad, and I doubt I am going to even need any tuning on it.

[R4ND0M_AX3]

Originally Posted by WolfPlayer

I'm also trying to aquire a spare STI intake manifold/TB for porting and an aeromotive fuel pressure regulator. Ultimately, I would like to assemble a full setup (ported intake manifold, ported TB, APS rails, TGV Deletes, gaskets, etc.). It would be nice to unbolt my full stock piece and then bolt on the new setup (and not have to chop off the fuel pressure regulator, etc).

t

After you have APS fuel rails you can do things a little different. The TGVs can stay on the heads while you take off the manifold. In fact you have to do it that way because of the fuel line routing. It makes things a little easier not having to deal with all of that weight when you're trying to line things up.

Spend some time on the routing of the new fuel lines and breather tubes from the turbo inlet kit. It's a tight fit with everything near the throttle body area.

[WolfPlayer]

Ummm - it's nice weather I started the install of my FMIC. Everything is mounted. I just need to cut the cover and the splash gaurds (and mount my dual I/C sprayer ). So far, I have about 9 hours into this install.

t

[LogicalXtremes]

Originally Posted by WolfPlayer

Ummm - it's nice weather I started the install of my FMIC. Everything is mounted. I just need to cut the cover and the splash gaurds (and mount my dual I/C sprayer ). So far, I have about 9 hours into this install.

t

Hey wolf iam going to be doing this install soon myself what do you think about giving a local guy a hand?