The TALON, Running Project Report Options

[awd4kicks]

Yea, that car ran out of fuel faster than anything I could have ever imagined...

I've got the double MAF hz logging on and it pegs 3214 by 4500 rpms.

Thats pretty cool in a sick and HP dimented way!

[turbohcar]

Yea, that car ran out of fuel faster than anything I could have ever imagined.  11.5-11:1 A/F with the duty at 100%.  With the fuel pressure higher there was more in it, but the pump couldn't keep the pressure up.  The A/F would start to climb to 12:1 past 5500.

I've got the double MAF hz logging on and it pegs 3214 by 4500 rpms.

[turbohcar]

:blah darn keys!

[awd4kicks]

Stop the presses...

I found a few problems over the weekend and one of them has really thrown off the fuel supply numbers. Please dissregard my last post about fuel delivery for now. After the smoke has cleared and I'm running a clean tune I'll revise this thread as required for good reference information.

The rest of the story:

After giving Turbohcar his working 78occ injectors back and reinstalling my 850cc injectors with my EPROM chip, my car experienced a few problems. On the first try the engine started right up and ran fine. I turned the engine off to move the Saturn. When I came back to the Talon the engine would crank, but not start.

I spent the rest of Friday tracking down my ignition, fuel and wiring. I found a power wire to my Water Injection shorted out under a bolt. I also found the the fuel pump fuse on my rewire, just smoked! Half of the fuse was charcoal and the other half looked normal. I'd say it popped but kept some sort of contact with a lot of resistance which also partially melted the fuse holder. I started over on Saturday and narrowed the problem to the injectors not firing. Rob kindly loaned me his non-EPROM ECU to test with. With this I was able to eliminate the rest of the wiring as the culprit. I talked to a number of members, tested the injector transistors as well as 3/4 of the other parts on the ECU. All checked ok. By Sunday NCGalant brought a new EPROM chip and she was starting like her old self again. I feel the dead short on the WI kit cleared the memory on the EPROM chip. just strange timing.

With the new EPROM we began tuning runs again. Things were a lot different with a new fuel pump wire/fuse holder and fuse. There seems to be fuel for days now. We were WAY rich, but before we could get 'er tuned in the old girl developed a boost leak of some sort.

So on to the next problem of the Perpetual world of DSM issues. I'll keep you updated.

[AWD DSM 1]

At least it's running! I'd say that's a good day in the life of a DSM!

[awd4kicks]

That is VERY true! I had my arms up in Victory when the engine started on it's own ECU and the new EPROM chip.

[ncgalant]

I pulled the date back off of the two eproms he had tried when it was shorting. One was all 0's and the other was full of garbage. Just as a control I pulled the one I had been running in the laser and it was all clean. That just goes to show that a power spike can do some crazy things.

[awd4kicks]

I re-ran my boost lines and reset my MBC and hooked up my water injection. I also made a 4" diameter boost leak checker. Found that my two piece Forrester Racing Head intake manifold is leaking at the seam. so I'm going to pull it apart and reseal it. Then we will see how it runs.

[AWD DSM 1]

4" boost leak checker... that's awesome!

[awd4kicks]

Absolutely. I've got your TA ECU also.

[ncgalant]

GREAT!! From the symptoms it had to be a boost leak past the MAF. I'm just happy you have enough fuel to run 9.5:1 A/f all of the way through

[awd4kicks]

Back together again with the upper intake resealed and poly mounts installed front and rear on the motor. Also have a new reverse light switch installed and the upper intercooler piping re-routed to keep it in one piece.

I can't say that I like the extra vibration heard at low RPM's with the Poly mounts in, but it could be worse and the benefits are there.

I toyed with boost levels and fuel supply via MAFT on and off all day. So far up to about 27psi and still not too lean with the wideband reading a max of 11.6-11.8 in forth in the cooler weather tonight. I'm also feeling it start to pull timing as the knock did climb to 22 counts in forth, but this is on some lower grade 92 with 10% ethynol. 3rd felt great all the way through. I feel she could use some more fine tuning. For now I'm pretty happy with the performance with the previous bugs worked out.

Got a good 2nd gear bark going into second in the middle of the day... That was pretty sweet.

[black92_tsi_awd]

I windo-welded my mount and it shakes the steering wheel pretty good at idle too. Kind of annoying, but I've learned to live with it.

Glad to hear it's running good.

So the MAFT is your only tuning aid? Just wondering, because if it's good enough to tune your setup, it'll more than enough to tune mine.

[awd4kicks]

I'm always up for a fun run

But here's my back pocket excuse... It's always a work in progress.
3rd = frieght train
4th = a slowing frieght train

We will be adding some BP 93 octane today and cross my fingers that everything else holds together for a while.

[ncgalant]

I windo-welded my mount and it shakes the steering wheel pretty good at idle too. Kind of annoying, but I've learned to live with it.

Glad to hear it's running good.

So the MAFT is your only tuning aid? Just wondering, because if it's good enough to tune your setup, it'll more than enough to tune mine.

MAFT + EPROM set for 1000cc injectors

[awd4kicks]

hitting 4th would probably help too!

That remains to be seen, but it couldn't hurt.

[awd4kicks]

YEAH! I think I found my nitch! From now on I only go from 30MPH to 45MPH in fifth. Except for V8 domestics...

[awd4kicks]

Hahaha DSM's are so predictable!

Emotional equalibrium...
The high of performance
The low of breakage
The mustering of perservierance
The feeling of accomplishment
The high of performance... Etc.

After some fun last weekend I decided I needed to take care of an oil leak that had been smoking off of the exhaust. I found the typical DSM oil pan leak. So Wednesday night I had the oil pan off and resealing it with a high quality GM sealant.

Thursday I made a couple of quick fun runs with friends. Everything seemed to stay dry of oil, but I lost a cylinder after coming back to idle on the last 2-3-4th gear blast. So Thursday night I ended up pulling the cylinder head with Spy's help (Thanks!). This is because I found that one (yes only one) of the exaust valves on cylinde number three hung open and kissed the piston. Every other vlave looks good and the other three cylinders have good compression. The piston was hit but looks really good considering. I've talked to Rob about his fresh stock cylinder head and I've got a cheapo Felpro head gasket coming in for a Saturday morning thrash session to get this thing to Slo Pny Drag Day.

Was it because one of the old lifters siezed up, because the valve got hung up in the guide, or because the old rocker got bound up? I don't know yet, but she's been running way too good not to try to make it to the Drag Day!

[awd4kicks]

Haha No reason to mince words... I'll lay down everything she's got on sunday! Drag or be dragged.

[The Iron Goat]

You're puttin a felpro in that O-ringed head of yours? Is that a little risky considering that beast blew apart a cometic?