August 18, 2019, 03:23:56 PM

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Messages - digitalsolo

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1
Build Threads / Re: Blake's 1965 Mustang Project
« on: Today at 03:18:07 PM »
So, I managed to get my 2018+ intake manifold installed.    It's a little too close to the brace in a few areas, so I'll mark those and clearance it by about 1/4 (just make a little scallop) in those areas this week.   Here's the intake on:



It did move the throttle body forward about 3/4" which goofed up my charge pipe:



So I hacked it up and redid it.   I had to reclock on area and add in a little piece of pie cut in another, but she fits up better than before now:



I'll repaint it shortly.    The car does seem to pull a little better from 5500-6500 with this intake (which it is supposed to) but I can feel it run out of oomph at 6500 RPM pretty abruptly.   I'm going to look for an F150 dyno graph, but I assume it's my intake cams (which are truck parts).    I'll see if I can't swap to Mustang GT intake cams this winter, and if I do, I'll do the Boss 302R exhaust cams while I'm in there.

In the meantime, now that the cams work, I've been working on tuning it a lot.   I'm chasing the duty cycles for the VVT actuation a bit, it seems to be too mild or too aggressive with a fairly fine line between, and the PIDs are tough to really dial in, but it's getting better.   

I found the cause of my surge issues at low load;  it was going into idle control loops at 1700 RPM and <7% throttle, which I would get into on the highway occasionally and on slow speed surface streets constantly (and sometimes when leaving a stop).   I dropped that to 2.5% throttle (it measures the APP1 or DBW pedal input).   That completely cleared that up, as before it was going super wacky on the timing.   Nice and smooth now.

VE table is getting closer and closer as well, though I need to get the VVT dialed before I can really sort it in the 2500-3500 RPM range in particular, as 10-15* of cam timing is worth a half a point in lambda or more, so dialing the VE without the cam control proper in those areas is basically impossible.

I still can't get >3.9 psi of positive pressure (I have 4 psi springs in the gates, so that makes sense).   That said, I have my boost control active and I've validated that the output does activate the solenoid, so I need to figure out if it's a gate problem (diaphragm), a tubing issue (I don't think that's the case, as I just replaced them all) or a solenoid issue (maybe a bad sintered metal filter or internal issue).    Anyway, worst case scenario I'll swap to 10 psi springs, but I'd really rather have the controller working so that I can have boost controlled by gear/knob/etc.

My ECU goes out to AEM tomorrow for re-repair.   They covered shipping and RMA costs, so that's good, and were at least somewhat apologetic about the issue.   Hopefully this is the last time I have to deal with taking the car down for ECU issues.   As i said before, if this one has another issue, it'll be getting an MS3Pro Ultimate with the DBW addon, but honestly, I'd like to use the AEM as I'm getting at least somewhat comfortable using it.

Beyond that, I added some more wiring today;  new leads from the ECU to the trunk to run staged fuel pumps (trying to cool down my fuel by running less pump).   I ran some extra wires for future use;   I may try a PWM pump controller as well if need be, as that seems like a nice idea.   I also added a 12 gauge lead from the front ground bus to the rear battery lug.   I've not had any potential/offset issues with ground, but I figure it can't hurt to give it a better path.

2
Build Threads / Re: Four's 1JZ swapped FD Project - Rx7upra
« on: Today at 03:00:26 PM »
Those look nice.   Sakebomb?

3
Drivetrain / Re: straightening tri-axe handle
« on: Today at 10:58:37 AM »
maybe.    Depends on how far youíre moving it.

4
Drivetrain / Re: straightening tri-axe handle
« on: Today at 09:42:38 AM »
Itíll crack if you donít heat it.

5
General Tech / Re: Replace Heater Core
« on: Today at 09:41:49 AM »
3 hours or so total.

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General Tech / Re: Replace Heater Core
« on: August 17, 2019, 06:44:04 PM »
Gotta pull the dash.   Once that is done itís about a 30 minute job.

7
Road Racing/Autocross / Re: Fuel slosh.... need help/opinions
« on: August 17, 2019, 09:15:49 AM »
Radium makes an in tank surge tank for the FD.

8
Build Threads / Re: Blake's 1965 Mustang Project
« on: August 16, 2019, 10:04:22 AM »
So according to AEM, the ECU they sent as a replacement for my failed unit wasn't properly updated to run digital inputs correctly, so it has to go back to them again.    They are covering shipping and the RMA cost this time though, so that's better than last time at least.   They said I'd have an RMA form and label late Wednesday or Thursday morning, it's now Friday morning and nothing.  Oh well.    They're also supposed to be looking into why I can't download firmware for it as well.

It sounds like this may be why my cam sensors were being so fussy, so maybe I didn't need to spend 10 hours replacing one.   At least for peace of mind it's new I guess.   If this doesn't clear the issues up, I'm either putting a Haltech or a MS3 Ultimate in it.   A company released a DBW addon for MS3, which was the big thing stopping me from considering it.

In the meantime, I scored a killer deal on a 2018+ intake, which is worth a bunch of power up top and a pretty good gain everywhere else as well (especially vs. my 2013 truck intake) so I snagged that.   I modified the vacuum ports and 3D printed plugs for the ones I don't need, and also 3D printed lock-out levers for the variable runner controls as I don't need them/can't use them anyway.     It looks like I'll have to modify my cold side piping just a little and a few other things, but nothing major.

9
Build Threads / Re: 57 Buick Special GMT900 AWD Frame swap
« on: August 16, 2019, 01:11:42 AM »
Thatís a lot of progress!

10
Road Racing/Autocross / Re: "Doda" '93 FD NASA TT Build
« on: August 14, 2019, 03:36:02 PM »
That's a pretty concise explanation of building these things.  :D

11
Build Threads / Re: LT1 in an 85 GSL
« on: August 13, 2019, 06:13:33 PM »
Came out really well.

12
Build Threads / Re: LS Blazer
« on: August 12, 2019, 09:10:18 PM »
Looks very axle-y.

13
Build Threads / Re: Blake's 1965 Mustang Project
« on: August 10, 2019, 05:26:25 PM »
All 4 cams work!   10 hours later...    what a boat load of work.   Found melted wastegate lines, too.   Explains why my boost solenoid wasn't doing anything, haha.   Replaced them, rerouted them and put some heat shield on them.   Hopefully that's solved.

Now for some tuning, and waiting for AEM to get back to me about the flex sensor.   If I can sort that out, and the boost issue is sorted, then all that's left is getting my VSS to read, and everything in the ECU is working properly.   :)

14
Build Threads / Re: LT1 in an 85 GSL
« on: August 10, 2019, 05:24:45 PM »
I prepped and had Maaco shoot my FC at one point and it was actually pretty good (for a couple hundred bucks).   I'd say go for it.

15
Ahhh, the joys of custom, combined with caring about doing it correctly.   Nice work Joel!

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