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Thanks for the reply. I believe my injectors are the 80lb siemens deka motortron EV1. Cobrajet doesn't sound familiar.

I believe these were the ones I purchased:
...

My other concern is with the injector scaling. I know these are common injectors. For the scaling I copied over all the injector parameters from a tune using the same injectors (from...

I have a 5.3 and 4l60e in a 2002 camaro, mostly stock with ls6 cam and intake, 80lb siemens deka's, 76mm turbo... pretty standard build.


The car is up and running and idling very nicely. I am...

I am running 91/93 octane. Fuel in the tank is ~1 year old, put about 5 gallons of fresh stuff on top.

I did notice that the connector that goes to my crank sensor looks a bit questionable...

Well, I just bought a fuel pressure test kit from NAPA. As long as the gauge is accurate, I think I may have found the problem. Key on, fuel pump prime - 48psi. Cranking - 48psi.

Would being...

STILL nothing.....I don't know what to do. I'm seriously considering selling the car as is. It's a heavy paper weight taking up more than half my garage right now.

I tried all the different...

Took a break from this thing for a bit....now i NEED to get it running.

My IAT's are ambient temps, around 70-75 here. My water temp is reading about 65 while cranking. Still NOT getting my MAF...

No problem at all, all good information that is valuable to me as a very amateur tuner.

For my situation, I do not have a MAF installed, the connector on the harness side is just sitting...

Here is the scan from about a minute of cranking.50410

Yup, that's pretty much what I followed, and what I have in the scanner also matches that.


Made the changes, MAF still won't give a code, still won't start.

Thanks! I will make those changes today and give it a shot.

I'm not seeing where the instructions are located within the forum. I just coverted from 1 bar to 3 bar following the tuning book I...

I am using the same tune mechanicman provided, just with the 3 maf cells you pointed out set to '0'.

Hopefully getting closer, I'm glad to have possibly found something. Thanks for the assistance...

So, of course my next question is.. How do I get the MAF to fail? I have "0" in those 3 cells. Anything I can do to make the MAF fail instantly?

Well, I changed those 3 MAF cells to "0". Tried to startup the car. I don't seem to be getting a MAF code. I'm also showing not ready for all 4 o2 sensors (rears are not installed). I'm assuming...

Just to make sure, the attached tune you gave is for 80lb injectors, correct? I just came across the injector scaling calculator, so I'm assuming what you have matches this? I'm at work, will have...

I have tried that with the last tune after you suggested. I just copied over mecanicman's tune 100% last night and tried to get it to start. I will modify that tune with the changes you suggested...

Well, I copied everything over, matched all the dtc's, still the same exact thing. Act's like it wants to maybe go once ever 20-30 seconds of cranking.


I'm so frustrated and confused. This...

Thanks! will take a look when I get out of work.

Any idea why it was starting and running before? Unless if I missed something while copying the second time...... Either way, thanks a lot!

The tune in my first post is not the correct one or the one I'm currently using. The one 2 posts up is the tune currently in the car that I'm trying to get it running with. The injector data and...

Ugh, I think I uploaded the wrong tune originally, and I think I've lost that tune.

After the initial post when the car wouldn't start, I noticed that I left a ground off near the passenger...

Hey guys, I had the car running for the past week on the tune uploaded, but today would not start. I'm totally lost again.

Hi, I have a 02 Camaro that I just swapped a lm7 (5.3) into. It is a 4l60e running SD 3 bar OS.

Some info:
5.3
stock 02 camaro intake
ls6 cam
stock returnless fuel system
siemens deka 80lb...

I've been reading for weeks haha, and still feel so confused / know nothing. So do I NEED to get a 2 bar map and change the OS to 2 bar? Am I better off going SD over using the MAF?

Yesterday...

I have the stock map sensor and I'm on the stock tune right now (other than evap and rear o2 disabled).

I have an aem boost gauge tied into the vacuum line for the brake booster.

I'm on the...

I have ngk plugs that are supposedly non-gapable.