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Hello again Org Nation. Once again, the Ga Boy needs some help. I appreciate all input, but if you have real experience I would greatly appreciate it.
Heres what we are working with:
2006 CCSB 250, 6" lift, 37" KM2's
Sinister EGR delete, ARP studs, OE head gaskets, Powermax, IDP 155's, Accufab elbow (awesome, I know), Built 5R110 with a billet convertor, 6.4 banjo bolts, blue spring kit, 1 piece driveshaft, lot's and lots of Autometer gauges.
Problem is with the tuning. I have tunes from two very reputable Guys, and one very reputable female. The tunes for the new injectors came from the two guys. One tuners files on street and race leave my fuel pressure gauge at 60-62 at idle, only dropping a very few psi (4-6) under WOT. However, the truck feels stock and barely gets out of it's on way. I swear it seemed faster with the stock turbo and sticks. This is the case with both tunes, the street and the race file.
The other tuners file is just the opposite. Just nasty. Second gear shifts blow the tires off, third chirps, the truck feels faster than my little Coupe did. Problem is the fuel pressure is dropping in dramatic fashion. Like from 60-62 at idle and cruise to a sickly 20 under WOT.
I have emailed both tuners, and gotten very different responses. Tuner A says "Meh, not sure, fp sounds good, run it", Tuner B says "get an airdog and let it eat"
I have downloaded the tunes over and over, from different pc's, loaded them to the truck on several different occasions with the same results. I did order an AD 2 today, but not sure if it's what I really need. Local tuner (who I will be going to see soon) agrees with tuner B. Says contrary to popular belief, the AD is a much needed modification, especially with ANY larger injector/turbo combo.
Any ideas? I normally wouldnt struggle with this but I trust "A", hes an awesome person, but the truck feels........flat on the tunes provided. Even though the FP stays in a nice safe area. What to do?
Last edited by Polozlx; 09-26-2011 at 12:10 PM.
Reason: because words give me a headache