Altered Mental Status (1G AWD 5spd)

[Stapl3]

I'm a little bit confused on what to do about the cells under 5500 RPM needing more fuel though, so maybe someone can give advice on what to do there. I feel like I'm gonna need more than 100%VE there and I don't wanna do that. At 4500 it seems like it needs more fuel, by just a tiny bit. But yeah. Big thanks to yourself and everyone else.

If at 5500rpm AFRatioEST=wideband and the value used on the SD table is 100, your fuel system is now calibrated. There is to be no more adjustments made to globalfuel or base fuel pressure, unless you switch back to gas or a mix which would just be an easy change of global.

Now that you have AFRatioEST=wideband at 5500 and the cell used then is 100, you can do whatever you want guilt free to the SD table to make AFRatioEST=wideband at any and all cells on the table (aside of 5500rpm 100 of course).

 

[Anfurnyy]

Thanks brotha. I can't express how grateful I am for everyone in this thread and outside of it who not only helped me, but have continually encouraged me to move away from that terrible tune using MAFcomp. God the car ran like ass on that. This was so easy, I just had to push through and stop getting so angry/giving up so easy.


The car runs indescribably better. It doesn't die when I turn both fans on, it doesn't die when I come to a stop. It doesn't have a buck or shudder or hesitation. It honestly feels and runs like a stock M/T DSM but with more power obviously. It's so smooth revving and driving. God I should've done this sooner.


But now it's just honestly driving and tweaking the VE map. I'm a little bit confused on what to do about the cells under 5500 RPM needing more fuel though, so maybe someone can give advice on what to do there. I feel like I'm gonna need more than 100%VE there and I don't wanna do that. At 4500 it seems like it needs more fuel, by just a tiny bit. But yeah. Big thanks to yourself and everyone else.

i think give the car what it wants honestly that turbo might come in a little sooner than you expect. Your 5500-6k VE looks solid. Also word of advice try not to tune the VE table to fix throttle tip in or acceleration enrichment. Not that you have been but you'll see it goes leaner when you mash the throttle. If you look at your TPS delta and compare your wideband and AFRatioEst it should help tell you if you need more fuel in this area too. ALSO with this the goal is to have a crisp throttle response. Dont worry so much bout the numbers as you do about it driving well. TPS delta will never be perfect and the AFR's will never match,


You're definitely on the right track i feel like. Give it what it wants and as long as it makes sense, send it!

 

[CrackedDSM]

If at 5500rpm AFRatioEST=wideband and the value used on the SD table is 100, your fuel system is now calibrated. There is to be no more adjustments made to globalfuel or base fuel pressure, unless you switch back to gas or a mix which would just be an easy change of global.

Now that you have AFRatioEST=wideband at 5500 and the cell used then is 100, you can do whatever you want guilt free to the SD table to make AFRatioEST=wideband at any and all cells on the table (aside of 5500rpm 100 of course).

i think give the car what it wants honestly that turbo might come in a little sooner than you expect. Your 5500-6k VE looks solid. Also word of advice try not to tune the VE table to fix throttle tip in or acceleration enrichment. Not that you have been but you'll see it goes leaner when you mash the throttle. If you look at your TPS delta and compare your wideband and AFRatioEst it should help tell you if you need more fuel in this area too. ALSO with this the goal is to have a crisp throttle response. Dont worry so much bout the numbers as you do about it driving well. TPS delta will never be perfect and the AFR's will never match,


You're definitely on the right track i feel like. Give it what it wants and as long as it makes sense, send it!

Hell yeah, to both of you. This is exciting and vindicating all at the same time.

 

[CrackedDSM]

Well, I've been suspicious about the fuel pump and losing fuel pressure, and logs tonight confirm there's an issue. I've previously had to tighten the clamps that hold the fuel hose on the pump that connects to the top of the sending unit, I guess they've either come loose again, or the hose has ripped or any number of issues. Is there a better replacement hose for this job, I'm just using the rubber fuel hose that came with this Aeromotive stealth 340. I'll pull it next weekend and investigate though.


Here's logs to confirm. First log (04.28_01) is my first semi-3rd gear pull after I added more fuel where it needed it. The car ran even leaner everywhere under boost despite commanding more fuel. You'll see.

Second log (04.28_03) I put the VE back to where it was before, commanding less fuel all over. It didn't run AS lean, but you can see how much more lean it is in the same spot (5500RPM and 100% VE) vs older logs.

But, off topic....42lbs a minute!! It's so much happier on this real tune vs the MAFcomp slider stuff.

 

[Anfurnyy]

Well, I've been suspicious about the fuel pump and losing fuel pressure, and logs tonight confirm there's an issue. I've previously had to tighten the clamps that hold the fuel hose on the pump that connects to the top of the sending unit, I guess they've either come loose again, or the hose has ripped or any number of issues. Is there a better replacement hose for this job, I'm just using the rubber fuel hose that came with this Aeromotive stealth 340. I'll pull it next weekend and investigate though.

Do you have a fuel pressure sensor ? And if so is it logged? I don't think I see it in there. I feel like i support looking at the fuel pump hose for sure.

But, off topic....42lbs a minute!! It's so much happier on this real tune vs the MAFcomp slider stuff.

I don't exactly know how this is calculated but I might be inflated due to high airflowperrev value?

 

[Anfurnyy]

Well, I've been suspicious about the fuel pump and losing fuel pressure, and logs tonight confirm there's an issue. I've previously had to tighten the clamps that hold the fuel hose on the pump that connects to the top of the sending unit, I guess they've either come loose again, or the hose has ripped or any number of issues. Is there a better replacement hose for this job, I'm just using the rubber fuel hose that came with this Aeromotive stealth 340. I'll pull it next weekend and investigate though.


Here's logs to confirm. First log (04.28_01) is my first semi-3rd gear pull after I added more fuel where it needed it. The car ran even leaner everywhere under boost despite commanding more fuel. You'll see.

Second log (04.28_03) I put the VE back to where it was before, commanding less fuel all over. It didn't run AS lean, but you can see how much more lean it is in the same spot (5500RPM and 100% VE) vs older logs.

But, off topic....42lbs a minute!! It's so much happier on this real tune vs the MAFcomp slider stuff.

Ill throw this out there too but this is what MY VE table look like in my car with a big turbo and s2 cams. Please dont copy this its obviously going to be different but i just wanted you can see how early my VE jumps to 90+ percent as well. This is on a Link G4+, not ECM link.
I still think its worth checking the fuel pump hose

 

[awdtsi_90]

Random update: I think I'm gonna try to reinstall cruise control in this thing. I need to test if the stalk actually activates everything, if the cruise computer is still even in there, and if it's even wired correctly.


But, I'm gonna do the exact same thing I've done with everything so far. I'm just gonna buy the cruise control system, plug it in, and see if it works. If it doesn't, then diagnose and test why not.

Auto seatbelts, rear wiper, stereo...etc. Kind of have a track record now. Lol. So yeah.

I also scored some fog lights for free.99, but they didn't have the brackets sadly. If anyone has the hookup on some 1GA turbo fog-light brackets, hit a brotha up.

The cruise control is nice to have on highway drives. Not gonna lie

 

[CrackedDSM]

Do you have a fuel pressure sensor ? And if so is it logged? I don't think I see it in there. I feel like i support looking at the fuel pump hose for sure.

I don't exactly know how this is calculated but I might be inflated due to high airflowperrev value?

I sadly do not. I have been tempted to mount my phone under the hood and take a video of the gauge.

But on researching this pump, Aeromotive claims max PSI is 65psi. That may very well be my problem because base fuel pressure is in the mid 40’s all day. Maybe slightly higher. So at 20lbs that’s close to its limit anyway. But I’m gonna check the hose anyway. If everything is fine then I may upgrade to a hellcat 525 pump.

The cruise control is nice to have on highway drives. Not gonna lie

I do remember vaguely having CC in my auto DSM and love it. I use CC in everything I drive. Even the ambulance. Lol. Gotta have it.

The light on the stalk turns on when I click it forward, I just gotta try to engage it at speed and see if the gauge cluster light comes on. If it does I’ve heard that means the CC ECU works then I’ll just need the assembly.

But now that the car doesn’t die when both fans kick on, I’m gonna prioritize AC after the fuel issue is fixed.

 

[Anfurnyy]

But on researching this pump, Aeromotive claims max PSI is 65psi. That may very well be my problem because base fuel pressure is in the mid 40’s all day. Maybe slightly higher. So at 20lbs that’s close to its limit anyway. But I’m gonna check the hose anyway. If everything is fine then I may upgrade to a hellcat 525 pump.

Another thing that you could check also should be fairly simple, is if your fuel pressure is rising with boost. So you could hook up a hose to the nipple to like an air compressor and see if the fuel pressure rises to make sure it's working.

 

[CrackedDSM]

So if I don't find a leaky hose what other diagnostics can I do to see if it's the pump? If it rises 1:1 with boost what else could it be?

 

[CrackedDSM]

Found my lean issue.

What absolute junk and garbage. There’s no way it vibrated itself into snapping that snout. I had it mounted tight as a MFer to the sending unit.

Hellcat pump and PTFE hose to connect the hose to the sending unit on the way now.

 

[Anfurnyy]

Found my lean issue.

View attachment 763771
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View attachment 763773

What absolute junk and garbage. There’s no way it vibrated itself into snapping that snout. I had it mounted tight as a MFer to the sending unit.

Hellcat pump and PTE hose to connect the hose to the sending unit on the way now.

Well that's honestly the best answer you could have gotten. At least you KNOW what happened.

I don't know if you be got this one hardwired, but don't forget to do that when the new pump goes in

 

[CrackedDSM]

Well that's honestly the best answer you could have gotten. At least you KNOW what happened.

I don't know if you be got this one hardwired, but don't forget to do that when the new pump goes in

Hardwired? What do you mean? Fuel pump rewire? If so, that was one of the first things I did was rewire/hot wire the fuel pump because it wasn't done before.



And I 100% agree with you. I'm annoyed it happened, but man I am very relieved I found a true smoking gun. It just blows my mind how this even happened.

So yeah, DO NOT BUY the Aeromotive Stealth 340 pumps. They're JUNK. You're better off with the knockoff eBay units, or just upgrade once to the Hellcat 525 pump and be done with it.

 

[jesse12345]

Are you saying the cheap kemso 340 from ebay might be better? The color of yours looks literally exactly like mine except it was a plug and Play unit. I'm still on my first one I ordered 3 as backup 3 years ago, and the first one still hasn't died. I even ran it out of gas and it sounded like it straight up was about to explode. Maybe I got lucky who knows. Those were the years of me being cheap, I promise I'm not anymore.

 

[CrackedDSM]

Are you saying the cheap kemso 340 from ebay might be better? The color of yours looks literally exactly like mine except it was a plug and Play unit. I'm still on my first one I ordered 3 as backup 3 years ago, and the first one still hasn't died. I even ran it out of gas and it sounded like it straight up was about to explode. Maybe I got lucky who knows. Those were the years of me being cheap, I promise I'm not anymore.

You are exactly who I was thinking of when I said that. . I was warned the Aeromotive branded 340s were junk but I didn’t listen.

Ah well. I got there in the end. Now I shouldn’t need to upgrade pumps ever again.

 

[SixBolt_16G]

I was warned the Aeromotive branded 340s were junk but I didn’t listen.

Seriously? Guess thats something im going to have to keep an eye on...

 

[CrackedDSM]

Seriously? Guess thats something im going to have to keep an eye on...

2Gs have a different style sending unit so maybe that’s easier on the outlet of fuel pumps. Or maybe I just had dumb bad luck.

Either way, definitely keep an eye peeled. If you start having a random fuel pressure drop or lean issue in boost that gets worse with the more fuel you command, you know what to look for.

I wanted to drive this car to work this weekend and I almost did but I legitimately had this thought of “I don’t want this lean issue to get worse and end up leaving me stranded”. Imagine if that outlet snapped off while driving.

 

[jesse12345]

So I'm guessing that's why your fuel pressure was bleeding off so fast?

 

[CrackedDSM]

So I'm guessing that's why your fuel pressure was bleeding off so fast?

Yep. Because originally when I installed this I had the same issue. Turns out it was a loose hose clamp, that I fixed. After that it would hold fuel pressure for a pretty long time. Then randomly one day(noted a few posts ago actually, Lol) it started having the issue.

Just crazy. What a POS.

 

[CrackedDSM]

Already beginning to plan some future upgrades. IDK if they're performance upgrades, more just peace of mind upgrades. In no particular order they are.

• Install A/C
• Flex-Fuel Install(sensor, cable, programming it in Link)
• -8AN PTFE Feed line from tank to rail
• -6AN PTFE Return line to tank
• Possible injector upgrade. I want more headroom incase I go with an FP Red in the future and I'm already seeing 80%IDC's on my 1050's with this Green. This may happen sooner, rather than later tbh. I want 30lbs out of this Green.
• Build my spare engine. Just rods/pistons, nothing insane. If I'm gonna stay Ethanol, gonna go minimum 9:1 compression)

I think that's all for now. The only reason I put the fuel system stuff on there, is I want to minimize any issues with running E85 on my rubber feed/return lines. I'm 100% sure people have done this with no issue...but I have no clue what brand, quality, or material these feed and return lines are as they're aftermarket and weren't done by me. Doing this would E85 proof the entire system from tank to engine and back, and honestly would not only clean it up infinitely better but would make me feel infinitely more confident in the car. Really don't trust these hoses.

The Flex Fuel sensor is honestly just me being lazy and not wanting to have to manually pull the laptop out every single time I switch between E85 and 93. The eventual goal for this car is to be able to do cross country trips with it..and E85 ain't as common as it once was. I have 15-20gallons worth of fuel cans I can bring with me, but better to be prepared. Plus I 100% plan to run a tank of 93 every so often to clean the lines/system out. Even with the upgraded lines/E85 proofing the fuel system.

Other than that...IDK. I really don't think the car needs anything else at that point. If/when I get to this point, I will 100% begin looking into a second DSM/GVR4 project. Preferably Auto. But we'll cross that bridge when we come to it.

In the meantime...many thanks to/for everyone's advice, input, and motivational speeches I've been blessed with.

Appreciate ya'.

 

[jesse12345]

I was going to switch to e85 and I was pretty dead set on it, but to take the car on trips I decided not to. We have literally zero e85 around me and I'd have to drive 50 minutes to the nearest gas station for it. So I'm stuck with 91 unfortunately. Glad to see everything working out, and that looks like a solid upgrade path. I'd love to finally upgrade something one day, but until then I need to keep fixing my screw ups first.

 

[CrackedDSM]

I was going to switch to e85 and I was pretty dead set on it, but to take the car on trips I decided not to. We have literally zero e85 around me and I'd have to drive 50 minutes to the nearest gas station for it. So I'm stuck with 91 unfortunately. Glad to see everything working out, and that looks like a solid upgrade path. I'd love to finally upgrade something one day, but until then I need to keep fixing my screw ups first.

I’d say enjoy the journey now. Don’t focus too much on the future.


And honestly I’m in the same boat with E85. The only reason I made the jump is I switched counties for EMS and now the pump that was 45 mins out of the way, is squarely on my way to work. Too good of an opportunity to turn down.

 

[MindBlowin03]

When I first switched to e85, about 7 years ago, I only had two stations about 50 minutes away. I would go once in the spring and fill five 5 gallon jugs. Since I always ran flex I would just add it when needed to keep things happy on kill mode. E60 or higher anyways did the trick.

 

[CrackedDSM]

Hellcat pump came in today, but the corrugated PTFE hose it came with is giving me fits. It seals on the pump great, but I cannot get it to seal on the fuel hanger side. I ordered some fuel injector hose clamps because they clamp down stronger as a last ditch effort to get it to seal, otherwise I’m gonna have to use some J30R10 synthetic rubber fuel hose which I really don’t want to do. I really wanna use Teflon, but I’m limited options wise if these clamps don’t solve the problem.

Anyway, they’ll be here Thursday. Both the synthetic rubber hose and the clamps. Bummer. I really wanted to get this installed today. This pump is a beast and the base/fuel outlet nipple is far thicker and superior to the old Aeromotive pump.

 

[CrackedDSM]

Been doing a ton of reading and I really don’t know how guys are sealing this corrugated/teflon tube to the stock sending unit lines.


When everything comes in and when I go to install it I’m gonna try to make a tech article. Especially if I can get the corrugated tube to seal perfect.

Anyone do this successfully or know anyone that’s done it successfully?