Disassembly: Startup fuel tables

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10-24-2012, 11:05 PM
anyonebutme

Quote:

Originally Posted by Greg E

Wire that up to the check engine light and use the knock CEL chrome mod.

I would, but Brett hasn't provided a harness and ECU yet, lol.
10-25-2012, 11:19 AM
DG

Interesting.

I'm going to have a look at converting this to AEM-speak and see how my current setup differs from OEM.

The OEM sequence is a little more complex.

Have you disassembled the post-start warmup sequence too?

DG
10-25-2012, 11:32 AM
Jesters Deadd

Why do AEM guys want to copy the stock code?
10-25-2012, 12:07 PM
Greg E

Quote:

Originally Posted by DG

Interesting.

I'm going to have a look at converting this to AEM-speak and see how my current setup differs from OEM.

The OEM sequence is a little more complex.

Have you disassembled the post-start warmup sequence too?

DG

Yes. They're in the first post. The last 2 tables are just an enrichment multiplier added to the IPW for a short amount of time. The enrichment factor and length of time are shown in the screen shot. This isn't an enrichment to "cranking" IPW. It's an enrichment to "normal" engine running IPW. The ECU switches out of "cranking mode" and into "normal mode" when RPMs > 438rpm as shown in the last table.

"Warm up enrichment" will be explained in another thread but its just another mulitplier based on coolant temperature.

I know you AEM guys are anxious to see the whole routine from MAF to final IPW. I'm working on typing that all out. It's quite complex! I'm very sorry I haven't been keeping the 3STech threads alive but I have been working nearly every day on this for the last year!
10-25-2012, 12:09 PM
Greg E

Quote:

Originally Posted by Jesters Deadd

Why do AEM guys want to copy the stock code?

Is that a serious question? :p
10-25-2012, 12:11 PM
Greg E

Quote:

Originally Posted by anyonebutme

I would, but Brett hasn't provided a harness and ECU yet, lol.

Brett is off serving our country. I got to speak with him the day before he left. He wasn't clear exactly how long he'd be gone but I'm not expecting him back till November at the earliest. He's a very busy person but I'm sure you'll find his stuff worth the wait!
10-25-2012, 12:18 PM
NOMIEZVR4

Thanks to Greg I'm also now running 1000cc injectors on my VR-4 with no start up issues thus far. Cant wait to crank up the boost...Hey what/where is the fuel pressure solenoid? I would like to get rid of stuff that isn't needed anymore.
10-25-2012, 12:21 PM
Greg E

Quote:

Originally Posted by NOMIEZVR4

Thanks to Greg I'm also now running 1000cc injectors on my VR-4 with no start up issues thus far. Cant wait to crank up the boost...Hey what/where is the fuel pressure solenoid? I would like to get rid of stuff that isn't needed anymore.

That's a whole nother discussion thread. So far only me and Marc are running the FPR and Adam will be testing it soon too. After I get a few more people using this setup I'll post the results.
10-25-2012, 02:44 PM
Jesters Deadd

Quote:

Originally Posted by Greg E

Is that a serious question? :p

:) haha
10-25-2012, 02:45 PM
Jesters Deadd

Quote:

Originally Posted by NOMIEZVR4

Thanks to Greg I'm also now running 1000cc injectors on my VR-4 with no start up issues thus far. Cant wait to crank up the boost...Hey what/where is the fuel pressure solenoid? I would like to get rid of stuff that isn't needed anymore.

The pin has been repurposed... the solenoid has been too.

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