G
Guest
·After a year of running the 55
After a year of running the 550 with a Stebro x-pipe and Quicksilver mufflers, I'm now the (sole prototype) driver of the only 550 in the world with a tuned exhaust system (from Hyper-flow).
In early 2007, I'll have an article in PILOTA magazine, describing the process of engineering and test-fitting prototypes and the definate results.
Forget the "sound" improvement (and forget what a muffler- any muffler- can "do" for performance, since the muffler is at the END of the harmonic chain and thus is nothing more than the bell of a musical instrument). This car now PERFORMS like a Ferrari with a 1970's era F-1 engine with tie rods so light you could mail them in an envelope!
The car now pulls tree stumps to 7,000 rpm and is also now well over 500 hp in the mid-range! I'm amazed by the difference! The next step: Cam timing (by Scuderia Rampante in Boulder, CO, with data selected from a GTO250 engine that ran at Sebring, Nurburgring and Daytona). I've got a choice between more hp or more torque; and am leaning to more hp from 3500-5000 rpm, since the power band flattens out anyway at the top end by sheer physics.
VIDEO:
http://www.laserradio.com/tuned550.rm
After a year of running the 550 with a Stebro x-pipe and Quicksilver mufflers, I'm now the (sole prototype) driver of the only 550 in the world with a tuned exhaust system (from Hyper-flow).
In early 2007, I'll have an article in PILOTA magazine, describing the process of engineering and test-fitting prototypes and the definate results.
Forget the "sound" improvement (and forget what a muffler- any muffler- can "do" for performance, since the muffler is at the END of the harmonic chain and thus is nothing more than the bell of a musical instrument). This car now PERFORMS like a Ferrari with a 1970's era F-1 engine with tie rods so light you could mail them in an envelope!
The car now pulls tree stumps to 7,000 rpm and is also now well over 500 hp in the mid-range! I'm amazed by the difference! The next step: Cam timing (by Scuderia Rampante in Boulder, CO, with data selected from a GTO250 engine that ran at Sebring, Nurburgring and Daytona). I've got a choice between more hp or more torque; and am leaning to more hp from 3500-5000 rpm, since the power band flattens out anyway at the top end by sheer physics.
VIDEO:
http://www.laserradio.com/tuned550.rm