06-02-2014, 11:33 AM
Just trying to help out based on my experiences.
Maybe Mcglynn had really bad pumps so uprated ones made sense given his tuning plans... but those mods are not essential to a torque output of that level... just as reference to other owners.
With a GT15, 275lbft should be possible with just an FMIC and de-cat... and a fancy clutch. Though I've seen 270lbft on a new LuK. All these are Dyno Dynamics shoot-out figures too.
My car had twin centre boxes for the exhaust, and standard pumps, with 22psi boost at peak torque and boosted rail pressure, and I made 285lbft at 2500rpm without any cutting out issues.
I've even gone further on similar spec cars.
This is why I'm just curious about the dyno because at the limit of the GT15 with those mods I'd have expected more like 300lbft in the mid-range would be possible.
Maybe it just needs the rail pressure request boosting in the 2000-3000rpm region (ie, not boosting the peak, but boosting the mid-range values)
That will get the injection ending earlier and getting peak cylinder pressure moving back to maybe develop more torque?!
Worth a tinker with that *if* you want more torque maybe
Dave
Maybe Mcglynn had really bad pumps so uprated ones made sense given his tuning plans... but those mods are not essential to a torque output of that level... just as reference to other owners.
With a GT15, 275lbft should be possible with just an FMIC and de-cat... and a fancy clutch. Though I've seen 270lbft on a new LuK. All these are Dyno Dynamics shoot-out figures too.
My car had twin centre boxes for the exhaust, and standard pumps, with 22psi boost at peak torque and boosted rail pressure, and I made 285lbft at 2500rpm without any cutting out issues.
I've even gone further on similar spec cars.
This is why I'm just curious about the dyno because at the limit of the GT15 with those mods I'd have expected more like 300lbft in the mid-range would be possible.
Maybe it just needs the rail pressure request boosting in the 2000-3000rpm region (ie, not boosting the peak, but boosting the mid-range values)
That will get the injection ending earlier and getting peak cylinder pressure moving back to maybe develop more torque?!
Worth a tinker with that *if* you want more torque maybe
Dave