iTurbo
01-25-2014, 02:12 AM
One of my friends picked me up tonight to give me a ride in his Spirit R/T. Holy crap that car is waaay faster than when I used to own it! Believe it or not, it was my first real ride in a Spirit R/T with a big turbo and most all the bugs worked out. He's running about 20-21 psi right now using a grainger valve boost controller.
He has an AEM wide band gauge on the car. In 1st and 2nd gear, the A/F seems just fine, although it's pretty hairy with all the wheel spin and the gears go by pretty fast. It spins in third too, and the A/F gauge starts going past 12.0, to 12.5. In 4th gear it finally hooks, but I'm worried it's running dangerously lean at this point. I seem to recall it was getting near 13.0 at the top of 4th gear.
I built the engine for this car and it seems to be running beautifully, and I'd like to make sure it stays that way so he can keep having fun with it. Here's a short list of the mods:
Garrett T3/T4 turbo, 50 trim/stgIII, with a .72 A/R Cosworth turbine housing (no problems with spool at all)
'budget' FMIC from FWDPerformance
3" exhaust from FWDP (no cat)
ported exhaust manifold from FWDP
StgIV SBEC from FWDP
fuel rail from FWDP
Aeromotive adjustable FPR (60 psi base pressure)
ATP Turbo fuel filter
Mopar Performance +40 injectors
3-bar MAP sensor
Walbro 255 ltr/hr fuel pump
TurbosUnleashed clutch (yellow plate/4-puck)
battery relocated to trunk
air intake is 2.75 mandrel bent aluminum with an open element filter where the battery was
The fuel system is completely redone by myself on the car. All the stock lines have been replaced with 3/8" PolyArmour. All the hose sections are braided stainless -6AN hose from Summit. Everything is connected with 6AN fittings. I even had the fuel pump sender modified with 3/8" steel tube brazed on all the way into the tank.
I'm a little surprised the car is running lean already. The car runs really strong. I was afraid that it might be laggy with the choice of turbo, but that is not the case at all. What should be done about the lean condition at WOT though? Does this car already need another injector upgrade? Any way he can do that without having to have another recalibration to the SBEC as well?
He has an AEM wide band gauge on the car. In 1st and 2nd gear, the A/F seems just fine, although it's pretty hairy with all the wheel spin and the gears go by pretty fast. It spins in third too, and the A/F gauge starts going past 12.0, to 12.5. In 4th gear it finally hooks, but I'm worried it's running dangerously lean at this point. I seem to recall it was getting near 13.0 at the top of 4th gear.
I built the engine for this car and it seems to be running beautifully, and I'd like to make sure it stays that way so he can keep having fun with it. Here's a short list of the mods:
Garrett T3/T4 turbo, 50 trim/stgIII, with a .72 A/R Cosworth turbine housing (no problems with spool at all)
'budget' FMIC from FWDPerformance
3" exhaust from FWDP (no cat)
ported exhaust manifold from FWDP
StgIV SBEC from FWDP
fuel rail from FWDP
Aeromotive adjustable FPR (60 psi base pressure)
ATP Turbo fuel filter
Mopar Performance +40 injectors
3-bar MAP sensor
Walbro 255 ltr/hr fuel pump
TurbosUnleashed clutch (yellow plate/4-puck)
battery relocated to trunk
air intake is 2.75 mandrel bent aluminum with an open element filter where the battery was
The fuel system is completely redone by myself on the car. All the stock lines have been replaced with 3/8" PolyArmour. All the hose sections are braided stainless -6AN hose from Summit. Everything is connected with 6AN fittings. I even had the fuel pump sender modified with 3/8" steel tube brazed on all the way into the tank.
I'm a little surprised the car is running lean already. The car runs really strong. I was afraid that it might be laggy with the choice of turbo, but that is not the case at all. What should be done about the lean condition at WOT though? Does this car already need another injector upgrade? Any way he can do that without having to have another recalibration to the SBEC as well?