DFI or Ultimate
- Thread starter BB Wulf
- Start date
ghettosled
SYTY SUPERSTORE
speedpro is the best bang for the buck for the novice tuner. Any aftermarket ECU will be worthless unless you have it properly tuned. Since the speedpro is plug n play, with wide band o2 and many other cool features it seems to be the computer of choice.
For a mild truck(especially stock injectors), the stock ecm with an ultimate chip works well. There is a 50# chip tuned for a mild cam and vortec heads that seems to work well for those who are not willing to do their own tuning also.
my website has some general info on the 2.
For a mild truck(especially stock injectors), the stock ecm with an ultimate chip works well. There is a 50# chip tuned for a mild cam and vortec heads that seems to work well for those who are not willing to do their own tuning also.
my website has some general info on the 2.
I was inquiring about DFI and the Ultimate chip because I'm headed to Germany and I was wondering what system would be the easiest to maintain for daily street use. The truck has the following mods: (Any suggestions)
Brodix Aluminim Heads, Kenne Bell Headers, Kenne Bell 20G Turbo 650cfm, Kenne Bell Air/Air Intercooler, Kenne Bell Cold Air Intake, ACCEL DFI,50lb Injectors, Walbro Fuel Pump, Adjustable Fuel Pressure Regulator, 3000 rpm Stall, Engine Bored .30 Over with Forged Rods and Forged Pistons, 1.6 Roller Rockers, Derale Tranny pan with Wings, Deltagate External Wastegate, Torque Converter Lockup Switch, Manual Boost Controller, 160 Degree Thermostat.
Brodix Aluminim Heads, Kenne Bell Headers, Kenne Bell 20G Turbo 650cfm, Kenne Bell Air/Air Intercooler, Kenne Bell Cold Air Intake, ACCEL DFI,50lb Injectors, Walbro Fuel Pump, Adjustable Fuel Pressure Regulator, 3000 rpm Stall, Engine Bored .30 Over with Forged Rods and Forged Pistons, 1.6 Roller Rockers, Derale Tranny pan with Wings, Deltagate External Wastegate, Torque Converter Lockup Switch, Manual Boost Controller, 160 Degree Thermostat.
ghettosled
SYTY SUPERSTORE
either take your truck to a dyno equipted with some sort of wide band 02 meter, or buy the speedpro. WIth your mods, i think aftermarket ECU is the way to go, since you loose the boost control feature in the ultimate having an external WG.
Your biggest gain will be with tuning, then I would suggest a decent turbo. If you need help mating up a good /3" downpipe let me know.
Your biggest gain will be with tuning, then I would suggest a decent turbo. If you need help mating up a good /3" downpipe let me know.
ghettosled
SYTY SUPERSTORE
the DFI works when you get a wide band hooked up to it like you guys did :smile:
Either way, if you are not familiar with the tuning aspect. just nut up and pay someone expirienced. will save you soo much time and aggravation its silly.
Either way, if you are not familiar with the tuning aspect. just nut up and pay someone expirienced. will save you soo much time and aggravation its silly.
turbodig
Active member
A DFI is easier to tune than a stock chip,
for the average Joe, as long as you know how
to tune the DFI. The Accell site has a good
manual on how to get started.
As many here have mentioned... if you don't
have a wide-band AFR meter, it's an uphill
battle.
If you're not comfortable with EFI tuning,
and you're moving overseas, I'd strongly
suggest letting this truck pass by. The setup
listed above isn't for someone just getting
into Sy/Tys and EFI tuning.
Later,
Dig
(Interesting aside - The DFI documentation
refers to a wide-band NTK option for the old
vintage DFIs... a special firmware rev. Not
sure if the beast actually existed, but it
would be neat if it did. Gen 7 has it now, of
course, but I was surprised to see it in the
old documentation)