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Hey guys, currently went from Catless and longtubes to 100% stock. I have a spare P01 PCM, that a friend at GM is flashed with 100% OEM software I am just wondering if I am better off with OEM software tuning, or if the tune that was on my PCM would be better to use even with the stock setup, airflow/timing/fuel changes that were made etc,
Ive attached major changes I see, Timing, MAF and PE.
I have tr6 plugs in the car, but last set looked amazing when I took them out, put them in again - but at that point I ended up going back to stock exhaust manifolds, cats and a Hooker catback exhaust. Wondering if anyone has experience with tuning can tell me :
The changes here, the car ran fine with the "tuned" PCM in for the end of last season, but would the car run better with stock setup vs tune numbers seen here Worried about rich at WOT etc? Just curious on thoughts based on changes noted.
You set the exhaust back to stock, any remaining modifications that aren't stock? Is this for the '02 t/a in your signature? If it's an otherwise stock car that had aftermarket exhaust and is now back to stock exhaust, I'd say that would have no effect on the tables you posted. I will say that "tuned" spark table looks concerning. The spark is quite high and looks like it was lazily copied and pasted. The tuned PE table has your AFR at 12.95:1 which is kinda lean especially with spark so high. And a lot of times the numbers in that table don't translate to real world wideband AFR. Your table says 12.95 but maybe your actual AFR is 13+, asking for trouble.
Hey @AdsoYo It is the TA in the sig - 2002 LS1/T56
Currently :
Stock airbox with cut out snorkel under air filter
Stock manifolds, cats and y
Hooker Aerochamber Catback
Stock PCM
TR6GP Plugs
Only difference is the TR6 plugs, based on the condition of the plugs attched here (25-30,000km on them with old tune) - think TR6 will be fine with current setup - only driven later spring to fall, stored for winter - and driven longer country / highway roads and WOT pulls, no excessive idling or traffic.
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Current Tune vs Stock Tune Question 
