I am working with the T?V to get the GVWR to 3100KG (~6800lbs) by using addidional air bags in the back and the max towing capacity up to 3500KG (~7700lbs) by swapping the big suburban rear brakes. Mostly the truck is used on countryroads, so speeds between 30 and 70 mph, some light offroad, mostly farm tracks (for that i think about swapping in a select-a-lock, but it was not necessary yet).īut from time to time I use it to drive longer stretches over the Autobahn at speeds between 80 and 140mph (intended, atm the driveshaft starts vibrating at 115 mph). The only known factory LS application where the stock ECU doesn’t connect to the alternator is the ’98-’02 F-body. I am living in the german countryside and do quite some hauling with the truck, be it getting firewood or building material to carrying away rubble from our home rebuild. Standard volume, high pressure Oil Pump - 0w30 fully synthetic Dexos II Castrol Edge Oil, Oil to Air cooler with thermostatĤL60E ('fully build') with stock converter and large oil to air additional trans coolerĪtm with stock 5' aluminum driveshaft and 3,42:1 gears (stronger 5' aluminum driveshaft with 1350 u-joints and 4,1:1 gears on the way), 31,5' Tires (2KXX 8,5x18' rims with 285/60R18 116V Hankook tires)Īnd now to my intended use for the truck: Shorty headers, stock'ish Exhast (200cpi Cats and 3' Dynomax Ultraflow Muffler) Stock Truck intake, TB and ducting from Aircleaner to TB. Here is my setup, I attach the tune file, maybe it helps others. In stock tune, the AFRs are way too rich, maybe to be safe, that may lead to the injectors being too small. Seems like using a GM ECU, and having it. Right now, the plan is for a 3rd gen engine, hopefully a 6.0 LQ4, cable throttle, and a 4L80E transmission. The stock truck injectors seem to be fine, I dialed the ARF in at 12,5 while at powerenrich and made a WOT Pull 1st and 2nd gear, the AFR stayed at around 12.5 the whole time. I'm doing the preliminary planning for my LS swap, and am curious about opinions on controlling it and the transmission. I opened the throttleblade a bit in idle, to get the IAC to be happy. I got the engine to idle at about he LS6 RPMs, so 725 when warm in gear 800 warm in park. The LS6 tune did help alot, so thanks for that. It took some time, because I had to do it between other things, as time allows.

Tuning factory ls ecu