2008 Suburban with 2013 camaro ss motor build noob help.

[AKJay1970]

Hello,

Long story short as poss.

08 suburban 2500 4x4. 6.0 ly6 .030 over all forged stock stroke, 6l90e trans/w tow mod /DD 2800 converter, headers, gm ls9 cam, gm 90mm throttle body, Bosch 0280158051 (42lbs/58psi), upgraded fuel rail..-evap crap, cold air intake, new 3 row radiator (old was a one), added huge trans cooler, single plane intake Holley (for boost after break in), converted to 08 gm electric fans, does have AC. live on the coast if elevation matters.

After cross referencing all parts important parts its a match to a 2013 Camaro SS. As a NOOB .....is starting to tweak the stock tune better or just go to a 2013 Camaro SS tune, found a few in the repos. Haven't scanned stock computer with engine out and fuel lines off.

Jason

[AKJay1970]

To add to the post there are few if any tuners up here in Alaska. Found one and they only operate in the summer when im gone working. Daily driver with a heavy foot.

Thanks Jason

Hello,

Long story short as poss.

08 suburban 2500 4x4. 6.0 ly6 .030 over all forged stock stroke, 6l90e trans/w tow mod /DD 2800 converter, headers, gm ls9 cam, gm 90mm throttle body, Bosch 0280158051 (42lbs/58psi), upgraded fuel rail..-evap crap, cold air intake, new 3 row radiator (old was a one), added huge trans cooler, single plane intake Holley (for boost after break in), converted to 08 gm electric fans, does have AC. live on the coast if elevation matters.

After cross referencing all parts important parts its a match to a 2013 Camaro SS. As a NOOB .....is starting to tweak the stock tune better or just go to a 2013 Camaro SS tune, found a few in the repos. Haven't scanned stock computer with engine out and fuel lines off.

Jason

[gmonde]

I would do a compare with the ss file before flashing anything ,,, make sure you set up your injector info for the part number your installing ,,, invest in a afr meter,,this will help dial in PE,do a lot research and reading ,

[AKJay1970]

Yes I do have a AFR meter. Also deleted VVT. I have been reading allot and will continue, just wanting to get the thing to start/idle to start logging data.

Jas

[AKJay1970]

Can anyone recommend a online tutorial/class for basic tuning. Forums and the net reading are hit and miss, and you cant tell if its legit info. "Tuning for Dummies"? I have a reasonable knowledge of computer systems in a cnc machining aspect.

Another question is when looking at tunes are there any rules to follow meaning when your comparing do you need to stay with matched years, or computers ..etc.

Thank you
Jas

[5FDP]

ERM Performances offers a good course for new people. Maybe check them out.

[AKJay1970]

Thank you sir.

J

[AKJay1970]

If anyone can look at the tune files and offer any adjustments to the file. We have no tuners in Ak. I poked at the basics and it will be the first starting of the rebuild motor.

2008 chevy suburban all 6200 lbs of her
6.0lt rebuild .030 over
forged bottom end, slightly lower compression for boost later 9:1
LS9 cam
VVT delete kit
Headers
Cold air
2800 stall DD converter
added a large trans cooler inline
Added Efans on a relay out of the PCM
no cats, no rear O2s
hushpower muffler
replaced 1 row radiator with a huge 3 row

[AKJay1970]

If I want to test the efans I added to see if they are getting a signal from the PCM in the scanner can I do the adjustment in the editor then do I write calibration or do I need to write entire to turn them on manually in the scanner?

[AKJay1970]

Did a write cal with no luck. Triple checked the wiring, test PCM output to the relays 12v, tried the override in the scanner and nothing. Manually grounded the fans and they work. Havent started the vehicle on a fresh rebuild...waiting for tune to be done.

Is there any reason that the VCM Scanner override would not turn the fans on?

J

[ssbowtie1]

Have you considered remote tuning? There are many tuners that will remote tune your car if you send them logs with a wideband.

[AKJay1970]

Yes, im already doing so. And doing a tutorial class. Just wanted to test the PCM controlling the fans. I have a E38 Pcm and have heard they are tricky. The system setting seem easy but I must be missing something or there is a hidden OS setting.
Main Operating 12622142
System 12622216

Under the scanner controls I got the fans to turn on for like 1 sec. But so far cant repeat that.

I have volts tested at the PCM and it holds 12v with no change.

J

[AKJay1970]

PCMforLess to the rescue. Wow what a difference.

Anyone know why Bank 2 LTFT are asking +15-20% and the rest are perfect(+-2.0) more like 1-.8 trims.lol
Jason

[5FDP]

Swap sensors side to side to see if it follows and double check for exhaust leaks and vacuum leaks before the o2 sensor.

[AKJay1970]

Will do... I just found a post after letting my brain figure that it was a fuel or vac leak. o2s on the log seem ok. I do have a bit of tweaking to do

[AKJay1970]

LTft were reset because I was running open headers before and the o2s hated it.



Add on...... no Vac leak via water bottle technique

O2s will have to wait till tomorrow

[AKJay1970]

Update

O2s are good, so its looking like my temporary tacked in exhaust pipe my has leaks at the collector area and the o2 is only 2" from that. As logging....I increase the rpms and the ltft goes down where it is suppose to be. To me that kind looks like a vac leak but ill have the exhaust in early next week with a wideband and go from there.