23-09-2012, 08:15 PM
It'll run on standard management, but there's no way it'll run without risking serious damage without a remap, especially cams, you're moving where the power is being made massively, the fuel isn't there for the added air going in at lower RPMs...
These engines are NOT AFM based, you can't just wang mods on and expect them to work... They're only MAP based, at WOT they're not reading Lambda values, they're closed loop so just keep running the same values unless they recieve information from the knock sensor that it's detonating, and will pull the timing off...
Also, the increase in Torque isn't from the increase in volume so much, that's down to the increased purchase the piston has on the connecting rod due to the increased crank throw... Why do you think high RPM, high performance engines are based on shorter strokes... Stroking engines IMHO isn't the way to go, you're pushing two characteristics in opposite directions... You're using cams to increase the top end ability of the engine, but then promptly increasing the stroke to make it a torquier engine which won't want to rev...
With a graph like the above, you're only ever pushing towards the redline, with an OE GTi6 gearbox, you've got two options up until 70mph to recieve anything close to full power - on the limiter in 1st at about 40mph, on the limiter in 2nd at 60mph.... And that's it... With a turbocharged engine, you've got so much more area under the graph, you've got the midrange torque, which may not have much horsepower, but you've got decent pull over a much wider area of the graph...
![[Image: 898.jpg]](http://www.millteksport.com/images/custom/898.jpg)
^ That's what Turbocharged engines are all about, the torque is in from 3500 and from 4500 to 5500rpm, you've got 95% of all the power across a 1000rpm band! Going back to the graph that you posted above, you've only ever got the full power sat on the limiter, from 5000 to 6000rpm the power increases 50hp, from 6-7k it increases 20hp... but at 3500rpm you've only got 90hp!
The days of all or nothing Turbochargers are over... Only cheap chinese turbos, T28s and T04Es have that reputation... When you look at stuff like the new BorgWarner EFRs, some of the stuff that Precision Turbos are chucking out - that sorta stuff goes straight out the window....
These engines are NOT AFM based, you can't just wang mods on and expect them to work... They're only MAP based, at WOT they're not reading Lambda values, they're closed loop so just keep running the same values unless they recieve information from the knock sensor that it's detonating, and will pull the timing off...
Also, the increase in Torque isn't from the increase in volume so much, that's down to the increased purchase the piston has on the connecting rod due to the increased crank throw... Why do you think high RPM, high performance engines are based on shorter strokes... Stroking engines IMHO isn't the way to go, you're pushing two characteristics in opposite directions... You're using cams to increase the top end ability of the engine, but then promptly increasing the stroke to make it a torquier engine which won't want to rev...
With a graph like the above, you're only ever pushing towards the redline, with an OE GTi6 gearbox, you've got two options up until 70mph to recieve anything close to full power - on the limiter in 1st at about 40mph, on the limiter in 2nd at 60mph.... And that's it... With a turbocharged engine, you've got so much more area under the graph, you've got the midrange torque, which may not have much horsepower, but you've got decent pull over a much wider area of the graph...
^ That's what Turbocharged engines are all about, the torque is in from 3500 and from 4500 to 5500rpm, you've got 95% of all the power across a 1000rpm band! Going back to the graph that you posted above, you've only ever got the full power sat on the limiter, from 5000 to 6000rpm the power increases 50hp, from 6-7k it increases 20hp... but at 3500rpm you've only got 90hp!
The days of all or nothing Turbochargers are over... Only cheap chinese turbos, T28s and T04Es have that reputation... When you look at stuff like the new BorgWarner EFRs, some of the stuff that Precision Turbos are chucking out - that sorta stuff goes straight out the window....
