I am by no way saying that GM's PCM's are going to be the most efficient and put out the most power. I'm just saying that they will optimize for the higher octane but not fully.
I am by no way saying that GM's PCM's are going to be the most efficient and put out the most power. I'm just saying that they will optimize for the higher octane but not fully.
2000 GMC Sierra 5.3L 4x4 ECSB
You can, but once you go to WOT with a tank full of 87 on a 93 WOT tune you will have nothing but knock. so to make that work you would have to have two separate tanks one for cruise and one for WOT. So it makes no sense at all to do it.Originally Posted by fastlt1
Step 1. crus at it.
Step 2. get a hammer.
Step 3. torch it.
Is a PCM shipped to me? Do I return mine as a core? Would this require a crank relearn?
2000 GMC Sierra 5.3L 4x4 ECSB
We provide a PCM first, then you will have 20 days to return the core back to us.
Crank relearn can be performed with a tech II or tuning software, its takes about 5 mins to perform.
Her name is A Meli-
"If everything is under control, you are going too slow."- MA
I don't have access to either, so I guess a tune isn't an option for me. Sorry!
2000 GMC Sierra 5.3L 4x4 ECSB
Tune is always and option. I didnt have to do a crank relearn
2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s
2004 Buell XB12s
The local parts store should a tech2 to rent you
2007 RCSB|DTR81 built LSx 3xx|PRC|NX|BOGART|MSD|QUICKFUEL 950 E85|4L80|FTI Converters|Smith RaceCraft|Racepak
midweststreetcars.com
I had the crank re-learn done at the local stealership for free, at most they will charge you a small fee. They plug in there tech2 and rev the engine a few times and its over!!! Get the Nelson 93 tune, you will make up the difference of price per gallon with better mpg. It will take a few heat cycles for the pcm to learn, but when it does, Hold on!!!
2004 GMC Seirra 1500: 3" Body lift, 295/75 Nitto Terra Grapler's on Stone Crushers, cam keys, Bilstein 5100, 5.3 liter, K&N 77, Stainless longtubes, Banks Monster Exhaust, Nelson Performance 93 tune, 2600 stall, Ls1 fans, Taylor wires, NGK tr55's, TransGo shift kit, Corvette servo, TCI pan, 4.10 G80 w/ TA Performance, Optima
2006 SilveradoLittle Black Bitch
I didn't do a crank relearn when I got my Nelson PCM.
+1
T-RAV99 GMC | 5.3 | Skinny White Guy Tuned
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